Dec. 17, 1957
`
`M,BRUCKER
`CONTAINER
`Filed April 5, 1954
`
`2,816,682
`
`/.I
`
`MILTON BRUCKER•
`INVENTOR.
`HUEBNER, BEEHLER.
`WORREL B HERZIG,
`ATTORNEYS,
`,1 f~~
`
`BY
`
`RJRV EX 1009
`Page 1
`
`

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`2,816,682
`CONTAINER
`Milton Brucker, Los Angeles, Calif., assignor, by mesne
`assignments, to Zenith Plastics Company, Gardena,
`Calif., a corporation of Delaware
`Application April 5, 1954, Serial No. 420,823
`1 Claim. (CI. 220-44)
`
`5
`
`55
`
`60
`
`United States Patent Office
`
`2,816,682
`Patented Dec. 17, 1957
`
`1
`
`2
`pressure will not release the seal and allow escape of the
`excess pressure.
`Such means in the present invention takes the form
`of a mutilated thread including a series of outwardly pro-
`jecting elongate generally circumferential bosses 21 on
`the outer surface of the receptacle 11 which mate with
`complementary inwardly extending bosses 22 formed on a
`flange 23 which extends downwardly from the outer edge
`of the cover 12 proper, and forms a rim or flange for the
`10 cover. 12 circumjacent the rim 14 and the upper portion
`of the receptacle 11. The upper surface of the bosses 21 is
`made truly circumferential, that is, in a plane substantially
`normal to the axis of the receptacle 11. The lower sur(cid:173)
`face, however, is formed of two integral portions or
`This invention relates to containers, and more particu- 15 sections, a first portion 24 which is substantially circum-
`ferential, and a second portion 26 which is generally
`larly to containers for chemicals which tend to generate
`helical, that is being formed on a taper in the manner of
`gaseous pressure.
`It is an object of this invention to provide a readily open(cid:173)
`stantially circumferential. The upper surface of the
`boss .22 on the inside of the flange 23 is made substantially
`able and •closable container especially adaptable to contain
`20 flush with the bottom edge of the rim 23 and is thus sub(cid:173)
`chemicals.
`It is another object of this invention to provide such a
`stantially circumferential. The upper surface of the
`bosses 22, on the other hand, is made in two integral sec(cid:173)
`container adapted to contain chemicals which tend to
`generate gaseous pressure ..
`tions, the first section 27 being substantially circumferen(cid:173)
`It is another object of this invention to provide such a
`tial, and the second section 28 being cut on a taper, so that
`25 it actually is substantially helical.
`container for pressure generating chemicals, which con(cid:173)
`The surfaces 26 and 28 thus form engaging cam sur(cid:173)
`tainer releases the pressure when the pressure within the
`faces for causing the cover 12 ( and more specifically the
`container· has risen to a predetermined but relatively low
`gasket 16) to be engaged with increasing pressure against
`value.
`It is a further object of this invention to provide such a
`the rim of the receptacle 11. However, after the cam sec-
`container capable of withstanding rough usage and han(cid:173)
`SO tions 28 have cleared their correspoding cam sections 26
`dling without fracturing.
`then the two untapered or circumferential surfaces 27 and
`It is another object of this invention to provide such a
`24 are brought into engagement, so that further screwing of
`container capable of being dropped from a considerable
`the cap 12 does not effect any further tightening of the
`height, full or open, without fracturing.
`cap on the receptacle. As clearly shown in the drawings,
`35 and particularly Fig. 4, the outer edge portion of the cover
`In accordance with the above objects, a preferred em(cid:173)
`bodiment of the present invention will now be described
`12, directly inwardly of the flange 23, rests on the upper
`with reference to the accompanying drawing wherein:
`edge surfaces of the bosses 21 when the cover is in its
`Figure 1 is a perspective view of the container including
`closed position. Thus, the surfaces 28 of the bosses 22
`its lid or cover.
`40 of the cover draw the cover down into closed relationship
`Figure 2 is a vertical section taken through the con(cid:173)
`to the container 11 but the edge portions of the cover en(cid:173)
`tainer with the cover in place.
`gaging the tops of bosses 21 constitute stop means to limit
`Figure 3 is a top plan view of the container with the
`downward movement of the cover 12. The parts are so
`cover removed.
`proportioned that the bottom surface 18 of the groove 13
`Figure 4 is a fragmentary cross-section taken generally
`is held a predetermined fixed distance spaced above the
`45 rim 14 of the container 11. Thus the pressure on the
`on the same cutting plane as Figure 2.
`Referring to the drawing, 11 designates a round re(cid:173)
`gasket 16, brought about by engagement of the cover 12
`ceptacle or housing to which is adapted to be clamped a
`on the receptacle 11, is limited to a predetermined amount,
`cover 12. The cover 12 is adapted to close the open
`irrespective of how much the cover is screwed onto the
`mouth of the recepacle 11 and to that end is adapted
`receptacle 11. Hence, the spacing between the rim 14
`50 and the groove bottom 1S is limited to a predetermined
`to fit over the receptacle as shown in Figure 2. The
`underface of the cover 12 is provided with a circular annu(cid:173)
`minimum, thereby causing a predetermined amount of
`lar groove 13 adapted to mate with the rim 14 around the
`compression in the rubber gasket 16.
`In this way it is
`assured that the gasket 16 always seals the container to a
`In the bottom of the
`open mouth of the container 11.
`predetermined amount, so that when the pressure of
`groove 13 is a resilient gasket 16, preferably made of an
`the chemicals within the container reaches a certain low
`annular rubber ring which is hollow in the center, as shown
`value the gasket 16 will always yield and allow esca;pe
`at 17, in order to make the ring more yieldable.
`of the excess pressure over the rim 14, as will be de(cid:173)
`Means are provided for interlocking the cover 12 to
`scribed.
`the receptacle 11 with the rim 14 spaced a predetermined
`In Fig. 4 of the drawings there appears an L-shaped
`distance from the bottom surface 18 of the groove 13.
`gasket immediately inwardly of the rim 14 of the con(cid:173)
`By thus providing a predetermined spacing between the
`tainer 11, seated in a complementary groove in the cover
`rim 14 and the groove bottom 18, there is assured that the
`12. As clearly shown, that gasket is separate from the
`gasket 16 will be compressed only to a predetermined
`gasket 16. That L-shaped gasket may be completely
`degree. Thus when a gaseous pressure is generated in(cid:173)
`65 eliminated if desired and, in fact, satisfactory containers
`side the container, as by certain chemicals, such as calcium
`embodying the present invention are being made without
`hypochlorite, the gasket 16 will yield and allow the
`such a gasket present.
`pressure to be relieved by escape of some of the gases
`Upon the development of gas pressure inside the con(cid:173)
`over the rim 14 and to the atmosphere. Since only a
`tainer 11, that pressure is exerted against the inner face of
`predetermined minimum spacing can ever be effected be(cid:173)
`70 the cover 12. Since the cover 12 is of relatively thin
`tween the rim 14 and groove bottom 18, it is impossible to
`section and is quite flexible, it tends to bow or bulge out•
`seal the container so tight that this predetermined gaseous
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`RJRV EX 1009
`Page 2
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`

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`2,816,682
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`4
`without the introduction of deleterious moisture from the
`outside;
`In order to facilitate screwing and unscrewing the
`cover 12, a diametrical slot 31 is formed downwardly in
`5 the cover 12 and a corresponding diametrical slot 32 is
`formed upwardly in the bottom 33 of the receptacle
`11. These slots form convenient finger holes which
`enable the cover 12 and .. receptacle 11 to be more readily
`grasped and turned relative to one another.
`JO While tlie instant invention has been shown and de-
`scribed :hereinin what•is.conceived to be the most practi(cid:173)
`cal and preferred embodiment, it is recognized that de(cid:173)
`partures-may be made·therefrom within the scope of the
`invention, which is therefore not to be limited to the details
`15 disclosed herein but'is to be accorded the full scope of the
`daim.
`What is claimed is:
`In a container, a. receptacle and a cover therefor, said
`cover having a greater diameter than the receptacle and
`20 having a depending flange for securing said cover on said
`receptacle, said receptacle having a rim around its upper
`open end, said cover having a continuous recess therein
`opening downwardly and overlying said rim, means hold(cid:173)
`ing said cover.in fixed relation to said rim so that the upper-
`25 most wall of the recess is fixedly spaced above said rim
`when said cover is secured upon the container, and a resil(cid:173)
`iently compressible hollow tubular gasket in said recess
`compressed.against the upper edge.of said rim and in en(cid:173)
`gagement with'.only the upper edge surface thereof with a
`30 predetermined:pressure when said cover is secured upon
`said receptacle, said gasket means being resiliently yield(cid:173)
`able upward under pressure in said container for disengag(cid:173)
`ing said rim andreleasing excess pressure in said container.
`and thereafter re-seating upon said rim.
`
`3
`wardly under the influence ofthe internal pressure. Such
`bowing or bulging draws that portion of the cover radially
`inwardly of the L-shaped gasket in an inward and upward
`direction, thus loosening that gasket to such. an extent
`that gas pressure may readily by0pass the L-shaped gasket'
`and engage the gasket 16. Of course, if the L-shaped
`gasketis omitted completely, gas pressure in the container
`has free access at all times to· the inner face of the gasket·
`In either case gas pressure in the container is ex(cid:173)
`16.
`erted against the inner face of' the gasket 16 and distorts
`that gasket·sufficiently to lift at least the inner bottom sur(cid:173)
`face edge portion thereof away· from· rim· 14 · to admit
`gas pressure between gasket 16 and Tim 14; Such·pressure
`further compresses the gasket 16" away from rim 14 and'
`when the pressure reaches a predetermined value the
`gasket 16 will become sufficiently compressed so that the
`pressurized gas may escape· freely· over the rim 14' in
`the spaces between bosses 21 and 22 and thus vent the cons
`tainer until. the pressure· therein has been reduced to the
`value at which the gasket· 16· will again expand and' re(cid:173)
`engage rim 14. The L-shaped gasket·mentioned abovds
`identified in Figure 4 by numeral 40.'
`Stop · means are preferably provided· to limit· the turn(cid:173)
`ing of the cover 12 on the receptacle 11. Such· a means
`may take the form of stop abutment means 35 extending
`transversely from· the end of one or more of the threads or
`bosses 21 and/ or 22; against which the forward end· of
`the complementary boss abuts; The stop 35· prevents
`the cover from being turned to the point where the bosses
`22 · lose engagement with the bosses 21 with consequent
`.
`freeing of the cover.
`The receptacle · 11 and cover 12 are preferably made
`of fiberglass impregnated with a polyester· resin.
`In
`order to provide a light yet strong container, it has been
`found that the wall thickness ofthe cover and· container
`may vary from .090" to .120". Such· a container; while
`capable of sealing the contents securely against the ingress
`of moisture by virtue of the 'seal 16; is· none the ·less liglit ·
`in weight, easy to open simply by unscrewing, and capable
`of.withstanding dropping onto a hard surface from a cons 40
`siderable height without fracturing.
`Even though· the container is seale'd securely against
`the ingress of moisture; there is no danger of explosion
`due to excess pressure built up· by the contents; since the 45
`gasket 16 yields when an internal pressure of greater than·
`one-half pound per squai·e· inch· is' achieved within' the
`container. Hence any excesspressureis quickly relieved
`
`35
`
`References Cited' in the file of this patent
`UNITED STATES PATENTS
`Dunlap ---------------- Apr. 21, 1925
`Bray ------------------ July 5; 1927
`Walker·---------------- Mar. 27; 1928'
`Nolan ---------------- Aug. 27; 1935
`Wittenberg ____________ Oct. 15, 1940
`Slayter ---------------- Feb. 16; 1943.
`Hansen et al. __________ Apr: 23, 1946
`Tucker ________________ Sept. 26; 1950
`Morrison -------------- May 15; 1951
`
`1;534,204
`1,634,569
`1,663,822
`2,012;543
`2,218,188
`2;311,613
`2,399,115
`2;523;639
`2,552,642
`
`RJRV EX 1009
`Page 3
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