United States Patent [191
`Peterson
`
`3,866,164
`{111
`[45] Feb. 11, 1975
`
`[54] SECURITY SYSTEM AND LOCK
`THEREFOR
`[75] Inventor: Francis C. Peterson, St. Louis
`County, Mo.
`[73] Assignee: Hinge Manufacturing Company, St.
`Louis, Mo.
`May 22, 1973
`[22] Filed:
`[211 Appl. No.: 362,662
`
`[52] US. Cl. ............................ .. 340/274, 200/6164
`[51] Int. Cl. ......................................... .. G08b 13/08
`[58] Field of Search .... .. 340/274; 200/6167, 61.64,
`200/6193
`
`[56]
`
`1,674,570
`2,437,777
`2,617,868
`3,353,383
`
`References Cited
`UNITED STATES PATENTS
`6/1928 Re ..................................... .. 340/274
`
`3/1948 Zajk . . . . .
`
`. . . . . . . . . . . . . .. 340/274
`
`11/1952
`1 H1967
`
`340/274
`Menkin.
`Fish .................................. .. 340/274
`
`3,587,081
`3,714,643
`
`6/1971
`l/1973
`
`Hawkins et a1. .................. .. 340/274
`Sosin et a1. ....................... .. 340/274
`
`Primary Examiner-Glen R. Swann, Ill
`Attorney, Agent, or Firm —-Gravely, Lieder &
`Woodruff
`
`ABSTRACT
`[57]
`A security system includes a lock for securing a door
`and an alarm to signal when the door is ajar. The lock
`has a latch bolt which projects into a keeper in the
`door frame and an operating mechanism for retracting
`the latch bolt. A key operated locking device when
`locked prevents the operating mechanism from re
`tracting the latch bolt. When the key operated locking
`device is unlocked with the proper key to enable the
`latch bolt to be retracted, a switch closes to deactivate
`the alarm long enough to enable one to open the door,
`pass through the door opening, and then close the
`door.
`
`16 Claims, 6 Drawing Figures
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`EPAJENIEUFEBI H975
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`i 2 Alarm
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`PMENTEDFEB? 1 INS
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`SECURITY SYSTEM AND LOCK THEREFOR
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`BACKGROUND OF THE INVENTION
`This invention relates in general to security systems
`and more particularly to a security system having an
`alarm to signal security breaks at a locked door and
`means for deactivating the alarm when authorized per
`sonnel unlock the door.
`The operators of many large office buildings, ware
`houses, and the like employ security personnel to pa
`trol the buildings and prevent unauthorized entry. This
`is quite expensive, and by reason of this fact, many
`buildings of recent construction have electical security
`systems for maintaining surveillance over doors at criti
`cal locations therein and for controlling the locks
`which secure those doors. These systems are usually
`provided with key operated switches in the door jambs
`to deactivate the alarm system for a short interval of
`time so that authorized personnel can pass through the
`doors without triggering the alarm. Usually the
`switches activate a time delay which deactivates the
`alarm for about 20 seconds —time enough for the indi
`vidual to unlock the door, pass through the door open
`ing, and then close the door again. These systems are
`quite bothersome to those who use them, since two key
`locks must be operated to pass through each door.
`
`DETAILED DESCRIPTION
`Referring now to the drawings (FIG. 1), a secrrity
`system has a door D which is hung on and swings away
`from a door frame 2 having a strike jamb 4 and a hinge
`jamb 6. The door D is actually hung on hinges 8 and 10
`which are attached to the hinge jamb 6. The hinges 8
`are conventional full mortise hinges, while the hinge
`l0, besides being a full mortise hinge, is also so-called
`contact hinge which completes several electrical cir
`cuits when closed. The door D is provided with a lock
`L, while the strike jamb 4 is ?tted with an apertured
`strike or keeper 12 which the lock L engages and
`thereby prevents opening of the door D.
`The contact hinge 10 (FIG. 2) is disclosed in US.
`Pat. No. 3,659,063, and for purposes of this discussion
`it is sufficient to note that the hinge 10, like the conven
`tional hinges 8, has leaves 14 and 16, but that the leaf
`14 has four contacts 18a, 18b, 18c, and 18d, while the
`other leaf 16 has four spring loaded contactors 20a,
`20b, 20c and 20d which align with and engage the
`contacts 18a, 18b, 18c and 18d, respectively, when the
`hinge 10 is closed. However, when the hinge 10 opens,
`the contacts 18 separate from their respective contac
`tors 20. The contacts 18 and contactors 20 are set in
`dielectric bushings 22 which insulate them from the
`hinge leaves 14 and 16 and from one another. Thus, the
`hinge 10 when closed can complete four different elec
`trical paths or lines.
`The contractors 20a, b of the contact hinge 10 are
`connected with an alarm A such that alarm A will be
`actuated when the contactors 20a, b are separated from
`their respective contacts 180, b, thereby breaking an
`electrical circuit through the contacts 18a, b and con
`tactors 20a, b. The alarm A is located in a security of
`?ce or at some other place remote from the door D.
`During normal business hours the alarm A may be de
`activated, but after business hours it is set to maintain
`surveillance over the door D. Thus, when the door D
`is opened, the alarm A will be actuated, provided the
`alarm A is set to operate.
`The lock L is a standard unit-type lock which is modi
`?ed such that when it is unlocked a switch is activated
`to temporarily inactivate the alarm A. The lock L in
`cludes (FIG. 3) a latch assembly 30 and a pair of knob
`assemblies 32 and 34.
`'
`The latch assembly 32 (FIGS. 3 and 4) is located in
`the door D directly opposite from the keeper 12 and
`has a face plate 36 which is set into the edge of the door
`D such that its outside face is flush with the edge sur
`face of the door D. Fastened to the face plate 36 and
`projected into the door D therefrom is a bolt housing
`38 which houses a spring loaded latch bolt 40. When
`the door D is closed, the latch bolt 40 aligns with and
`projects into the apertured keeper 12 or the strike jamb
`4, and the spring loading is such that the latch bolt 40
`is urged outwardly beyond the face plate 38. Thus, un
`less retracted, the latch bolt 40 will prevent the door D
`from opening. Projected in the opposite direction from
`the housing 38 are a pair of guide plates 42 joined at
`their ends by spaced apart connecting portions 44
`(FIG. 4). Between the guide plates 42 is an actuating
`stem 46 which is somewhat shorter than the guide
`plates 42 and projects into the bolt housing 38 where
`it interlocks with latch bolt 40. The connection is such
`that the actuating stem 46, when moved toward the
`connecting portions 44 at the ends of the guide plates
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`SUMMARY OF THE INVENTION
`One of the principal objects of the present invention
`is to provide a security system which enables autho
`rized personnel to pass through doors without setting
`off an alarm and with minimum inconvenience. A fur
`ther object is to provide a security system of the type
`stated which utilizes locks of current construction hav
`ing easily performed modi?cations. An additional ob
`ject is to provide a lock suitable for use in a security
`system of the type stated. These and other objects and
`advantages will become apparent hereinafter.
`The present invention is embodied in a security sys
`tem having an alarm and a lock for securing a door.
`The lock may be released by release means which fur
`ther operates means for deactivating the alarm so that
`authorized personnel can pass through the door with
`out triggering the alarm. The invention also resides in
`the lock itself. The invention also consists in the parts
`and in the arrangements and combinations of parts
`hereinafter described and claimed.
`
`DESCRIPTION OF THE DRAWINGS
`In the accompanying drawings which form part of the
`speci?cation and wherein like numerals and letters
`refer to like parts wherever they occur.
`FIG. 1 is a perspective view of a door connected with
`an alarm and having a lock constructed in accordance
`with and embodying the present invention;
`FIG. 2 is a perspective view of a hinge used on the
`door illustrated in FIG. 1;
`FIG. 3 is an exploded perspective view of one of the
`locks forming part of the present invention;
`FIG. 4 is an elevational view, partially broken away,
`of the latch assembly for the lock illustrated in FIG. 3;
`FIG. 5 is a sectional view in elevation showing an
`other lock forming part of the present invention; and
`FIG. 6 is an electrical schematic view showing the
`lock of FIG. 5 connected with an alarm.
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`OPERATION
`When security precautions are in effect, the alarm A
`is set such that when the alarm circuit through the
`contacts 18a, b of the contact hinge 10 is broken, the
`alarm A will be activated and will thereby signal a secu
`rity violation at the door D. The alarm circuit is, of
`course, broken by opening the door D for then the con
`tactors 20a, b will separate from their respective
`contacts 18a, b. Consequently, anyone opening the
`door D when security precautions are in effect will set
`off the alarm A, provided the alarm A is not temporar
`ily deactivated.
`Authorized personnel, that is anyone possessing a
`key 68 which ?ts the lock mechanism 66, may pass
`through the door D without activating the alarm A. In
`particular, when the proper key 68 is inserted into the
`lock mechanism 66 and turned to move the lock mech
`anism 66 to its unlocked position, the knob 62 may
`then be turned to withdraw the latch bolt 40 from the
`keeper 12 and thereby release the door D from the
`strike jamb 4. Before the latch bolt 40 is completely
`withdrawn from the keeper 12, that end of the activat
`ing stem 46 located remote from the latch bolt 40 will
`engage the operating blade 54 of the switch 52 and
`close the switch 52. Since the switch 52 is connected
`to the alarm A through the engaged contacts 180, d and
`contactors 200, d of the contact hinge, the completion
`of the deactivating circuit results in a signal at the
`alarm A, and this signal deactivates the alarm A for a
`prescribed duration of time. Usually the alarm A is de
`activated just long enough for a person to open the
`door D, pass through the door opening, and then close
`the door D.
`Consequently, authorized personnel can open the
`door D without any inconvenience whatsoever, even
`when the alarm A is set to detect security violations.
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`42, will draw the latch bolt 40 into the housing 38 a suf
`ficient distance to enable the latch bolt 40 to be with
`drawn completely from the keeper 12. Nevertheless,
`the connection permits independent movement of the
`latch bolt 40 with respect to the actuating stem 46 so
`that the bolt 40 can be depressed into the housing 38
`upon striking the keeper 12, without causing the actu
`ating stem 46 to move toward the connecting portions
`44 on the guide plates 42. The actuating stem 46 is pro
`vided with a noncircular aperture 48 having generally
`vertical margins at its upper and lower ends.
`Attached to the ends of the guide plates 42 located
`remote from the bolt housing 38 is a switch housing 50
`(FIGS. 3 and 4) containing a switch 52 which has an
`operating blade 54 located in the path of the actuating
`stem 46. The blade 54 is positioned such that when the
`activating stem 46 is moved far enough to retract the
`latch bolt 40 from the keeper 12, the actuating stem 46
`will also engage the blade 54 and cause it to close the
`20
`switch 52. The switch S2 is connected to the alarm A
`through the contacts 180 and 18d and the correspond
`ing contactors 20c and 20d of the contact hinge 10
`(FIG. 2). When closed, the switch 52 triggers a time
`delay in the alarm A, and this time delay deactivates
`the alarm A for a short interval of time, such as 20 sec
`onds. Thus, during this interval the door D may be
`opened without setting off the alarm A.
`The knob assembly 32 (FIG. 3) includes a circular
`mounting plate 60 which is fastened firmly against one
`face of the door D. The plate 60 carries a handle or
`knob 62 which is capable of rotating in the plate 60,
`and the knob 62 has an operating spindle 64 secured
`firmly to it. The spindle 64 projects through the noncir
`cular aperture 48 in the actuating stem 46 and has a
`pair of longitudinally extending edges positioned adja
`cent to the upper and lower vertical margins of the ap
`erture 48. Thus, when the spindle 64 is rotated in either
`direction by turning the knob 62, the actuating stem 46
`is driven toward the hinge jamb 6 and the latch bolt 40
`is withdrawn from the keeper 12. The knob 62 and its
`spindle 64 coupled with the actuating stem 46 consti
`tute operating means for retracting the latch bolt 40.
`The knob 62 contains a locking mechanism 66 (FIG.
`3) which is operated by a key 68‘and may be moved by
`key 68 between locked and unlocked positions. When
`the lock mechanism 66 is in its locked position, it inter~
`locks with the mounting plate 60 and prevents the knob
`62 from rotating. When the lock mechanism 66 is in the
`unlocked position, the knob 62 is free to rotate in the
`mounting plate 60 and thereby turn the spindle 64.
`The knob assembly 34 (FIG. 3) also includes a
`mounting plate 70 which is fastened against the oppo
`site face of the door D. The mounting plate 70 carries
`a handle or knob 72 which is capable of rotating rela
`tive to the mounting plate 70. The inner end of the
`knob 72 has a socket which receives the end of the
`spindle 64 projecting from the other knob 62, the fit
`being such that the spindle 64 and knob 72 will rotate
`together so that when one is turned, the other is also.
`The knob 72 contains an operating disk 74 which is
`connected with the lock mechanism 66 in the knob as
`sembly 32 and when turned will move the lock mecha
`nism 66 between its locked and unlocked positions.
`Aside from the switch housing 50, and the switch 52
`housed therein, the lock L is a conventional unit-type
`lock, with the one illustrated being currently sold under
`the trademark KWIKSET.
`
`MODIFICATION The present invention may also be
`utilized with more sophisticated security systems such
`as the one disclosed in US. patent application, Ser. No.
`296,561, ?led Oct. 11, 1972 by Francis C. Peterson. In
`that security system a standard mortise lock provided
`with an auxiliary latch is modified such that it may be
`monitored and operated from a remote location. How
`ever, once the alarm system is set, the door secured by
`the lock cannot be opened even by authorized person
`nel, without setting off the alarm. By incorporating the
`principal of the present invention into the lock, the
`foregoing problem is overcome. Sometimes separate
`key operated switches are provided in these systems for
`deactivating the alarm long enough to permit passage
`through the door opening.
`In the modi?ed security system (FIGS. 5 and 6) the
`door D is provided with a mortise lock M having a case
`80 and a face plate 82 across the front of the case 80.
`Projecting from the face plate 82 for entry into the
`keeper 12 on the strike jamb 4 is a spring loaded latch
`bolt 84 which moves between retracted and extended
`positions, but is urged toward its extended position by
`a spring 85. The face plate 82 also has an auxiliary latch
`86 projecting from it, and the auxiliary latch 86 con
`trols the position of a locking lever 88. The auxiliary
`latch 86 is urged to an outwardly projecting position
`and assumes this position when the door D is open. In
`that position, the auxiliary latch 86 permits the locking
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`lever 88 to rise above the path of the latch bolt 84 so
`that the latch bolt 84 can be retracted. However, when
`the door D is closed, the auxiliary latch bears against
`and is depressed by the face of the keeper 12, and when
`so depressed allows the locking lever 88 to fall behind
`the latch bolt 84. Consequently, the latch bolt 84 can
`not be retracted when the auxiliary latch 86 is de
`pressed. This prevents someone from slipping a thin ob
`ject such as a plastic credit card between the face plate
`82 and the keeper 12 for the purpose of forcing the
`latch bolt 84 to its retracted position.
`The locking lever 88 pivots about a pin 90 located
`near the rear of the case 80 and is further provided with
`an actuating arm 92 which projects through the back
`wall of the case 80 and into a switch housing 94 fas
`tened to that back wall. The housing 94 carries a switch
`96 having an operating blade 98 which is engaged by
`the actuating arm 92 of the locking lever 88. As the
`locking lever 88 moves between its upper and lower po
`sitions, the actuating arm 92 also moves and operates
`the switch 96, causing it to open and close. Thus, the
`switch 96 maintains surveillance over the position of
`the locking lever 88, and the position of the locking
`lever 88 determines the security of the lock M.
`The latch bolt 84 is retracted by either one of two le
`vers 100, 102, and these levers, in order to move the
`latch bolt 84, lift the locking lever 88. The lever 100 is
`operated by a pair of handles or knobs (not shown)
`which are exposed on each face of the door D and are
`connected by means of a split spindle 106. Actually the
`spindle 106 extends through hubs 108, and when these
`hubs 108 are turned by the spindle 106, they cam the
`lever 100 such that it retracts the latch bolt 84. The
`other lever 102 is operated by a cylinder-type locking
`mechanism 110 which is threaded into the case 80. The
`locking mechanism 110 has a tumbler cylinder 112 in
`it, and this cylinder is norm ally prevented from rotating
`by the lock tumblers. However, when the key is in
`serted into the tumbler cylinder 112, it frees the cylin
`der 112 for rotation. On its back end the tumbler cylin
`der 112 is fitted with an actuating tab 114 which en
`gages the operating lever 102 and moves that lever
`such that it retracts the latch bolt 84. Thus, the latch
`bolt 84 may be retracted by turning the lock cylinder
`110 or the door knobs. The tab 114 coupled with the
`lever 102 constitute operating means for retracting the
`latch bolt 84.
`The door knob on the same side of the case 80 as the
`lock cylinder 110 may be locked against rotation by a
`solenoid 120 which is mounted on the switch housing
`94 and has its armature 121 connected to a linkage 122
`which extends into the case 80. The actual connection
`is effected by means of a connecting pin 123. The link
`age 122 is in turn connected to a locking dog 124 which
`shifts toward and away from the hubs 108. The hub 108
`which is operated by the knob 104 on the same side of
`the lock M as the lock cylinder 110 has a groove 125
`for receiving the locking dog 124. When the solenoid
`120 is energized and its armature 121 retracted, the
`locking dog 124 will be urged into the groove 125 in
`the hub 108 and hence will prevent the knob associated
`with that hub from rotating. On the other hand, when
`the solenoid 120 is not energized, a spring therein will
`force the armature 121 outwardly, and likewise, the
`locking dog 124 will move away from the hub 108 so
`as to free the hub 108 and its knob 104 for rotation.
`The electrical current for energizing the solenoid 120
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`is derived from a remote source and passes through the
`contacts 18a, d and contactors 20a, d of the contact
`hinge 10.
`The switch housing 90 also contains a switch 126
`provided with an operating blade 128 which lies in the
`path of the connecting pin 123 for the armature 121 of
`the solenoid 120. The switch 126 is positioned such
`that it is opened and closed by the pin 123 the armature
`121 moves between extended and retracted positions.
`The switch 96 is closed when the locking lever 88 is
`in its lower position, that is when it blocks the latch bolt
`84 and is open when the locking lever 88 is in its upper
`position. The switch 126, on the other hand, is closed
`when the armature 121 for the solenoid 120 is re
`tracted, in which case the knob 104 is prevented from
`rotating, and is open when the armature 121 is ex
`tended. Moreover, the two switches 96 and 126 are
`connected in series and are further connected to the
`alarm A through the contacts 180, d and contactors
`20c, d of the contact hinge l0 (FIG.6). Should the cir
`cuit through the switches 96 and 126 be broken, the
`alarm A will sound indicating that a security violation
`has occurred at the door D. The following conditions
`will result in an open circuit and hence an alarm signal:
`1. The door D is ajar -— circuit broken at contacts
`18c, d and contactors 200, d.
`2. Locking dog 124 withdrawn from the groove 125
`in the hub 108 so that rotation knobs 104 will with
`draw latch bolt 84-circuit broken at switch 126.
`3. Locking lever 88 in upper position in which case
`it does not block latch bolt 84-circuit broken at
`switch 96. Mounted within the case 80 adjacent to
`operated by locking mechanism 110 is still another
`switch 130 having an operating blade 132 which
`lies in the path of the actuating tab 114. Moreover,
`the operating blade 132 is positioned to that side of
`the operating lever 102 which is engaged by the ac
`tuating tab 114 in order to retract the latch bolt 84.
`Thus, as the tab 114 rotates toward the operating
`lever 102 it will close the switch 130 and thereafter
`will engage the operating ‘lever 102 and shift that
`lever such that it lifts the locking lever 88 and re
`tracts the latch bolt 84.
`The switch 130 is connected to the alarm A through
`the contacts 18b, d and contactors 20b, d of the contact
`hinge, and when closed triggers a time delay which de
`activates the alarm A for a short duration, that is long
`enough to enable one to open the door D, pass through
`the door opening, and then close the door D.
`This invention is intended to cover all changes and
`modi?cations of the example of the invention herein
`chosen for purposes of the disclosure which do not con
`stitute departures from the spirit and scope of the in
`vention.
`What is claimed is:,
`1. In a security system including a door which opens
`from a door frame having a strike thereon, an alarm
`connected with the door for signalling when the door
`is open, and a lock for securing the door in a closed po
`sition, the lock including a latch blot which is normally
`urged beyond the edge of the door for engagement with
`the door frame to secure the door in a closed position,
`and movable operating means engageable with the
`latch bolt to retract the latch bolt when the operating
`means is moved, the latch bolt being retractable inde
`pendently of the operating means to enable the latch
`bolt to retract upon engaging the strike of the door
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`dently of the manually operated mechanism so that the
`latch bolt does not move the manually operated mecha
`nism when so retracted; means for actuating the alarm
`when the door is opened, and switch means actuated by
`the manually operated mechanism and connected to
`the alarm for deactivating the alarm for a limited time
`when the latch bolt is retracted by the manually oper
`ated means.
`11. A security system according to claim 10 and fur
`ther characterized by a hinge for supporting the ‘door
`on the door frame having contacts and contactors
`thereon, the switch means being connected to the
`alarm through contacts and contactors of the hinge.
`12. A security system according to claim 11 wherein
`at least some of the contacts and contactors of the
`hinge break when the door is opened and the breaking
`of said contacts and contactors actuates the alarm if the
`alarm has not been deactivated by the switch means.
`13. A security system according to claim 10 wherein
`the operating mechanism includes a key operated lock
`having a rotatable cylinder which is rotated by a key in
`serted therein, and a tab on the cylinder, the switch
`means being in the path of the tab so that the tab oper
`ates the switch means as the tab is rotated by the cylin
`der to retract the latch bolt.
`14. A security system according to claim 10 wherein
`the operating mechanism includes a stem projected be
`yond the latch bolt in the direction the latch bolt
`moves, the stem being connected with the latch bolt
`such that when the stem is moved away from the edge
`of the door from which the latch bolt projects, the latch
`bolt is retracted and such that the latch bolt can be re
`tracted without moving the stem, a spindle projected
`through the stem and having edges which contact the
`stem and move the stem as the spindle is turned, and
`at least one handle connected ?rmly to the stem and
`exposed at the exterior of the door for turning the stem.
`15. A security system according to claim 10 and fur
`ther comprising a second manually operated mecha
`nism engageable with the latch bolt to retract the latch
`bolt, the second manually operated mechanism includ
`ing a handle exposed at the exterior of the door; a dog
`ging mechanism engageable with the second manually
`operated mechanism to dog the second mechanism and
`prevent it from retracting the latch bolt, and another
`switch means operable by the dogging mechanism for
`monitoring the position of the dogging mechanism.
`16. A security system according to claim 10 and fur
`ther comprising a locking lever movable between a
`blocking position wherein it prevents retraction of the
`latch bolt and a release position wherein it permits the
`latch bolt to retract, an auxiliary latch which is located
`opposite the strike and depressed by the strike when
`the door is closed, but when the door is open extends
`beyond the strike, the auxiliary latch when extended
`holding the locking lever in its release position and
`when depressed allowing the locking lever to move to
`its blocking position, and additional switch means oper
`ated by the locking lever for monitoring the position
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`frame without moving the operating means; the im
`provement comprising switch means connected to the
`alarm for deactivating the alarm for a limited time
`when said switch means is operated, the switch means
`being operatiedby the operating means when the oper
`ating means is moved such that it retracts the latch bolt.
`2. The structure according to claim 1 wherein the op
`erating means includes a key-operated locking device.
`3. The structure according to claim 2 and further
`characterized by a hinge having one leaf fastened to the
`door frame, and another leaf fastened to the door, and
`contact means carried by the leaves for completing an
`electrical circuit between the switch and the alarm
`when the door is closed.
`4. The structure according to claim 1 wherein the op
`erating means further includes a stem connected with
`the latch bolt and a handle engageable with the stem
`for retracting the latch bolt when the handle is turned,
`the switch being positioned in the path of the stem so
`that it is operated by the stem as the latch bolt is re
`tracted.
`5. The structure according to claim 4 wherein the op
`erating means further includes a key operated locking
`mechanism for preventing rotation of the handle.
`6. The structure according to claim 1 wherein the op
`erating means includes a key operated tumbler cylinder
`having a tab which rotates as the cylinder is turned and
`retracts the latch bolt, the switch means being located
`in the path of the tab and being operated by the tab as
`the cylinder is turned.
`7. The structure according to claim 1 wherein the op
`erating means includes a handle which is exposed out
`side the door and when turned withdraws the latch bolt;
`and wherein a key operated locking device is in the
`handle and prevents the handle from rotating when in
`a locked condition.
`8. The structure according to claim 7 wherein the op
`erating means further includes a stem and the handle
`is connected with the stem such that when the handle
`is turned the stem is moved and the latch blot is re
`tracted; and wherein the switch is engaged and oper
`ated by the stem.
`9. The structure according to claim 1 wherein the key
`operated locking device includes a lock cylinder se
`cured to the case and having a rotatable tumbler cylin
`der which rotates in the lock cylinder and receives the
`key; and wherein the operating means includes a tab
`which is fastened to the tumbler cylinder and rotates
`with the tumbler cylinder, the switch being in the path
`of tab and being operated by the tab as the tumbler cyl
`inder rotates.
`'
`10. A security system for a door hinged to a door
`frame having a strike thereon, said security system
`comprising an alarm, a lock having a retractable latch
`bolt which is normally urged outwardly beyond the
`edge of the door to project into the strike and thereby
`secure the door, the latch bolt having a face which en
`gages the strike as the door closes and causes the latch
`bolt to be retracted momentarily, a manually operated
`mechanism engageable with the latch bolt to retract the
`latch bolt, the latch bolt being retractable indepen
`
`50
`
`55
`
`65
`
`Page 7 of 9
`
`PETITIONERS' EXHIBIT 1007
`
`

`

`UNITED STATES PATENT OFFICE
`CERTIFICATE OF CORRECTION
`
`Patent No. 3,866,164
`
`'
`
`Dated Februarv 11, 1975
`
`Invento?s)
`
`Francis C. Peterson >
`
`It is certified that error appears in the above-identified patent
`and that said Letters Patent are hereby corrected as shown below:
`
`On page 1, the Assignee "Hinge Manufacturing Company" should
`be deleted and the correct corporate name inserted
`as follows: "C. Hager & Sons Hinge Manufacturing
`Company".
`‘
`
`Col. 1, line 14, before "security" at the end of the line,
`"electical" should be deleted and "electrical"
`substituted therefor .
`
`Col. 2, line 3, at the end of the line, delete "secrrity"
`and substitute therefor -— "security"
`
`Col. 4, line 5, after "b" and before "of", insert —— "and
`contactors 20a, b"
`
`Col. 6, line 33. Numbered paragraph (3) should end after
`the numeral "96.". A new unnumbered paragraph
`should begin with the word "Mounted".
`
`Col. 6, line 34 -— The words "operated by" at the beginning
`of the line should be cancelled and —- "The"
`substituted therefor.
`
`Col. 6, line 61, after "latch" and before "which" cancel
`"blot" and substitute therefor -— "bolt".
`
`Col. 7, line 5, after "being" at the beginning of the line,
`cancel "operatiedby‘I and substitute therefor ——
`"operated by".
`
`Col. 7, line 40, after "latch" and before "is" (third occur
`rence) cancel "blot" and substitute therefor -- "bolt."
`Signed and sealed this 13th day of May 1975.
`
`(SEAL)
`Attest:
`
`RUTH C. MASON
`Attesting Officer
`
`C. MARSHALL DANN
`Commissioner of Patents
`and Trademarks
`
`FORM PO-105O (10~69)
`
`U5c°MM.Dc 503764559
`* u.s. covznuuzn-r PRINTING arr-‘m2: was o-aes-su,
`
`Page 8 of 9
`
`PETITIONERS' EXHIBIT 1007
`
`

`

`UNITED STATES PATENT OFFICE
`CERTIFICATE OF CORRECTION
`
`Patent No- 3.866.l64
`
`~
`
`Dated Februarv ll. 197s
`
`Invenw?s)
`
`Francis C. Peterson >
`
`It is certified that error appears in the above-identified patent
`and that said Letters Patent are hereby corrected as shown below:
`
`On page 1, the Assignee "Hinge Manufacturing Company" should
`be deleted and the correct corporate name inserted
`as follows: "C. Hager & Sons Hinge Manufacturing
`Company".
`'
`
`Col. 1, line 14, before "security" at the end of the line,
`"electical" should be deleted and "electrical"
`substituted therefor.
`
`Col. 2, line 3, at the end of the line, delete "secrrity"
`and substitute therefor -- "security"
`
`Col. 4, line 5, after "b" and before "of" , insert --— "and
`contactors 20a, 1)"
`
`Col. 6, line 33. Numbered paragraph (3) should end after
`the numeral "96.". A new unnumbered paragraph
`should begin with the word "Mounted".
`
`Col. 6, line 34 —— The words "operated by" at the beginning
`of the line should be cancelled and -— "The"
`substituted therefor.
`
`Col. 6, line 61, after "latch" and before "which" cancel
`I‘blot" and substitute therefor —- "bolt".
`
`Col. 7, line 5, after "being" at the beginning of the line,
`cancel "operatiedby" and substitute therefor —
`"operated by".
`
`Col. 7, line 40, after "latch" and before "is" (third occur
`rence) cancel "blot" and substitute therefor -— "bolt,"
`Signed and sealed this 13th day of May 1975.
`
`(SEAL)
`Attest:
`
`RUTH C. MASON
`Attesting Officer
`
`C. MARSHALL DANN
`Commissioner of Patents
`and Trademarks
`
`FOR" PO40” (10-59)
`
`uscoMM-oc scan-P09
`Q’ U45. GOVERNMENT PRINTING OFFICE I I," 0-3‘5-