(12) United States Patent
`Yu
`
`(10) Patent N0.:
`(45) Date of Patent:
`
`US 6,554,353 B1
`Apr. 29, 2003
`
`US006554353B1
`
`(54) DUAL-PURPOSE CHAIR
`
`(76) Inventor: Cheng-Yi Yu, PO. Box 453, Taichung
`
`( * ) Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 0 days.
`
`(21) Appl. No.: 10/006,153
`(22) Filed:
`Dec. 10,2001
`AH
`
`W0 43
`(51) Im. c1?
`0 m 3 1
`.7
`(52) US. Cl.
`2
`, 297/58
`(58) Field of Search
`297/55, 58, 130,
`297/134, 378.1, 344.12, 452.63, 440.1,
`44022
`
`(56)
`
`References Cited
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`U.S. PATENT DOCUMENTS
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`2,270,562 A *
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`1/1942 Schermerhorn
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`77 77 47 87 07 37 37
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`10006456 34907400
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`* cited by examiner
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`2255666
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`07 47 07 97 07 87 67
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`2442347 7652162
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`ABSTRACT
`
`Primary Examiner—Mi1ton Nelson, Jr.
`(74) Attorney, Agent, or Firm—Harrison & Egbert
`(57)
`A dual-purpose Chair Comprises a seat structure and a base
`structure fastened detachably With the seat structure. When
`the seat structure and the base structure are fastened
`together,
`the chair serves as an of?ce chair. The seat structure
`can be separated from the base structure for use as a deck
`chair.
`
`3 Claims, 6 Drawing Sheets
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`J Squared, Inc. – Ex. 1002
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`

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`U.S. Patent
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`Apr. 29, 2003
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`Sheet 1 0f 6
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`FIGZ
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`NUI
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`Apr. 29, 2003
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`12
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`FIGB
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`FIGA
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`U.S. Patent
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`FIGS
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`U.S. Patent
`US. Patent
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`Apr. 29, 2003
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`Sheet 6 0f 6
`Sheet 6 0f 6
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`112
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`FIG.6
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`US 6,554,353 B1
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`1
`DUAL-PURPOSE CHAIR
`
`BACKGROUND OF THE INVENTION
`
`1. Field of the Invention
`The present invention relates generally to a chair, and
`more particularly to a dual-purpose chair Which can be
`interchangeably used as an of?ce chair and a deck chair.
`2. Description of Related Art
`The conventional chairs, such as of?ce chair, leisure chair,
`deck chair, massage chair, etc., are designed for one purpose.
`As a result, the convention chairs can not be used inter
`changeably for purposes other then the one for Which they
`are intended. In order to enhance the marketability of a chair,
`it is necessary to broaden the versatility of the chair.
`
`BRIEF SUMMARY OF THE INVENTION
`
`The primary objective of the present invention is to
`provide a dual-purpose chair Which can be used as an office
`chair or deck chair.
`In keeping With the principle of the present invention, the
`foregoing objective of the present invention is attained by a
`dual-purpose chair comprising a seat structure and a base
`structure. The seat structure can be independently used as a
`deck chair. In the meantime. The seat structure can be used
`as an of?ce chair in conjunction With the base structure.
`The features and the advantages of the present invention
`Will be more readily understood upon a thoughtful delibera
`tion of the folloWing detailed description of a preferred
`embodiment of the present invention With reference to the
`accompanying drawings.
`
`15
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`25
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`BRIEF DESCRIPTION OF THE SEVERAL
`VIEWS OF THE DRAWINGS
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`35
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`FIG. 1 shoWs a perspective vieW of the preferred embodi
`ment of the present invention being used as an of?ce chair.
`FIG. 2 shoWs an exploded vieW of the preferred embodi
`ment of the present invention as shoWn in FIG. 1.
`FIG. 3 shoWs a side schematic vieW of the preferred
`embodiment of the present invention as shoWn in FIG. 1.
`FIG. 4 shoWs a side schematic vieW of the folding of the
`preferred embodiment of the present invention as shoWn in
`FIG. 1.
`FIG. 5 shoWs a side schematic vieW of the preferred
`embodiment of the present invention in use as a deck chair.
`FIG. 6 shoWs a side sectional vieW of the folding of the
`preferred embodiment of the present invention as shoWn in
`FIG. 5.
`
`DETAILED DESCRIPTION OF THE
`INVENTION
`
`As shoWn in FIGS. 1—4, a dual-purpose chair embodied in
`the present invention comprises a seat structure 10, and a
`base structure 20.
`The seat structure 10 is formed of a seat 11, a backrest 12,
`and a backrest support frame 13. The seat 11 is provided in
`the underside With tWo inverted U-shaped support rods 112
`by Which the seat structure 10 is detachably fastened With
`the base structure 20. The backrest 12 has tWo long side rods
`123 opposite to each other. The tWo long side rods 123 are
`connected With each other at the top end thereof and are
`provided at the bottom end thereof With a support portion
`125. The backrest support frame 13 is of a U-shaped
`
`45
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`55
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`65
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`2
`construction and is provided With tWo arms 132, Which are
`respectively pivoted at the free end With the tWo side rods
`123 of the backrest 12, and at the midsegment With tWo
`longitudinal side rods 114 of the seat 11. The backrest
`support frame 13 has a croWn portion 134, Which is located
`under one longitudinal end of the seat 11.
`The base structure 20 is formed of an upright rod 21, a
`plurality of caster seat arms 22 extending radially from the
`bottom end of the upright rod 21, a support plate 23 mounted
`on the top end of the upright rod 21 and provided With a
`plurality of fastening holes 24, and a cover plate 40 corre
`sponding in shape and siZe to the support plate 23. the cover
`plate 40 is provided With a plurality of fastening holes and
`is fastened to the support plate 23 by a plurality of fastening
`bolts 25 Which are received in the fastening holes of the
`support plate 23 and the cover plate 40. The cover plate 40
`is intended to conceal the support plate 23 and to fasten the
`base structure 20 to the seat structure 10 in conjunction With
`the support plate 23. In other Words, the base structure 20 is
`fastened With the tWo support rods 112 of the seat 11 of the
`seat structure 10 by the fastening bolts 25.
`As shoWn in FIGS. 1—4, the dual-purpose chair of the
`present invention serves as an of?ce chair. The seat structure
`10 and the base structure 20 of the chair of the present
`invention can be separated from each other by unfastening
`the fastening bolts 25 of the support structure 20. The seat
`structure 10 is then used as a deck chair such that the tWo
`support portions 125 of the tWo side rods 123 of the backrest
`12 are rested on a ?oor surface, and that the croWn portion
`134 of the backrest support frame 13 is also rested on the
`?oor surface, as illustrated in FIG. 5.
`The tWo side rods 123 of the backrest 12 of the seat
`structure 10 are pivotally fastened With the tWo longitudinal
`side rods 114 of the seat 11 by a pivoting block 30 Which is
`provided at one end With a ?rst pivoting hole 31, at other end
`With a second pivoting hole 34, and a receiving slot 33. The
`side rods 123 of the backrest 12 are pivoted With the side
`rods 114 of the seat 11 by the pivoting block 30 such that the
`side rod 114 of the seat 11 is received in the receiving slot
`33 of the pivoting block 30, and that a ?rst pivot 32 is
`fastened With the side rod 114 of the seat 11 via the ?rst
`pivoting hole 31, and that the other end of the pivoting block
`30 is fastened With the side rod 123 of the backrest 12 by a
`second pivot 35 via the second pivoting hole 34. As a result,
`the backrest 12 can be sWiveled in relation to the seat 11 such
`that the backrest 12 can be turned on a pivoting point 136 of
`the backrest support frame 13 toWard the front end of the
`seat 11, as indicated by an arroW in FIG. 4.
`In light of the pivoting blocks 30, the seat structure 10 of
`the present invention can be folded such that the backrest 12
`and the seat 11 are joined together, as shoWn in FIG. 6.
`The embodiment of the present invention described above
`is to be regarded in all respects as being illustrative and
`nonrestrictive. Accordingly, the present invention may be
`embodied in other speci?c forms Without deviating from the
`spirit thereof. The present invention is therefore to be limited
`only by the scopes of the folloWing claims.
`I claim:
`1. A dual-purpose chair comprising:
`a seat structure formed of a seat and a backrest and a
`backrest support frame, said seat having a pair of side
`rods af?Xed on opposite sides of said seat, said seat
`having a pair of support rods on an underside thereof,
`said backrest having a pair of side rods affixed on
`opposite sides thereof, each of said pair of side rods of
`said backrest having a support portion at a bottom end
`
`

`

`US 6,554,353 B1
`
`3
`thereof, said backrest support frame having a pair of
`arms at opposite sides thereof, said pair of arms of said
`backrest support frame being connected together by a
`croWn portion, said pair of arms of said backrest
`support frame being respectively pivotally connected at
`a free end thereof to said pair of side rods of said
`backrest, said pair of arms of said backrest support
`frame being respectively pivotally connected at a mid
`segrnent thereof With said pair of side rods of said seat,
`said croWn portion being positioned under one end of
`said seat; and
`a base structure having an upright rod and a plurality of
`caster seat arrns extending radially outwardly from a
`bottom end of said upright rod, said base structure
`having a support plate mounted on a top end of said
`upright rod, said support plate having a plurality of
`fastening holes formed therein, said base structure
`being detachably fastened to said seat structure by a
`plurality of fastening bolts, said pair of support rods of
`said seat being fastened to said support plate of said
`
`4
`base structure by said plurality of fastening bolts, said
`plurality of fastening bolts being respectively received
`in said plurality of fastening holes.
`2. The dual-purpose chair of claim 1 Wherein each of said
`pair of side rods of said backrest is pivotally fastened
`respectively through a pivoting block to each of said pair of
`side rods of said seat, said pivoting block having a plurality
`of pivot holes.
`3. The dual-purpose chair of claim 2, said pivoting block
`having one of said plurality of pivot holes at one end thereof,
`said pivoting block having another of said plurality of pivot
`holes at an opposite end thereof, said pivoting block having
`a receiving slot formed therein, one of said pair of side rods
`of said seat being af?Xed by a pivot pin to said pivot block
`through the hole at said one end thereof, one of said pair of
`side rods of said backrest affixed by another pivot pin to said
`pivot block through the hole at said opposite end thereof.
`
`10
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`15
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`*
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