Upholstered chair with two-piece shell
First Claim
1. A chair, comprising:
- a base;
a seat shell defining a rear edge, lateral edges and a front edge, said seat shell being fixed to said base;
a back shell having a top edge, lateral edges and a front edge;
at least one tab integral with said back shell; and
at least one socket integral with said seat shell, said at least one socket being dimensioned to receive and retain said at least one tab in order to interconnect said shells, said at least one tab being clamped between said base and said seat shell to secure said back shell in place.
2 Assignments
0 Petitions
Accused Products
Abstract
A chair includes a base, a chair control and tilt mechanism, a shell assembly and a cushion assembly. The shell assembly includes a seat shell fixed to the base and a separate back shell. The back shell and seat shell are interconnected by a mechanical hinge. The hinge includes a pair of tabs on the back shell received in sockets defined by the seat shell. The tabs are retained in the sockets by the chair base. Back supports or chair arms have ends operatively connected to the tilt mechanism. Opposite ends of the arms are secured to the seat back to support and guide the back during tilting movement. The cushion assembly includes a molded foam member having a fabric or other upholstery material joined thereto. The back shell includes an integral, hinged upholstery flap. The fabric of the cushion assembly is folded over and joined to the flap. The flap is folded and operatively connected to a rear surface of the back shell. The seat shell includes another integral upholstery attachment flap. The flaps provide a finished edge for the upholstery. The back shell defines grooves within which lateral edges of the cushion assembly upholstery material are retained.
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Citations
69 Claims
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1. A chair, comprising:
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a base; a seat shell defining a rear edge, lateral edges and a front edge, said seat shell being fixed to said base; a back shell having a top edge, lateral edges and a front edge; at least one tab integral with said back shell; and at least one socket integral with said seat shell, said at least one socket being dimensioned to receive and retain said at least one tab in order to interconnect said shells, said at least one tab being clamped between said base and said seat shell to secure said back shell in place. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A chair comprising:
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a base; a seat shell defining a rear edge, lateral edges and a front edge, said seat shell being fixed to said base; a back shell having a top edge, lateral edges and a front edge; at least two tabs integral with one of said seat shell and said back shell; at least two sockets integral with the other of said seat shell and said back shell, said at least two sockets being dimensioned to receive and retain said at least two tabs in order to interconnect said shells, said at least two tabs each being generally L-shaped in side elevation and further being integral with a lower edge of said one of said back shell and said seat shell and still further being located at least partially between said base and said seat shell; an arm having an end joined to said base and an end joined to said back shell; and tilt means on said base and engaging said arm for resiliently biasing said arm and said back shell to an upright position, said at least two tabs being joined to said back shell by an integral hinge.
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8. A chair, comprising:
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a base; a molded seat shell attached to said base; a tilt mechanism on said base; a molded back shell operatively connected to said tilt mechanism for movement between upright and tilt positions; a hinge comprising molded polymeric material integrally molded as part of one of said back shell and said seat shell and forming a living hinge configured to hingedly and releasably interlockingly interconnect said back shell to said seat shell; and a cushion assembly secured to said seat shell and said back shell. - View Dependent Claims (9, 10, 11, 12, 13, 16, 17)
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14. A chair, comprising:
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a base; a seat shell attached to said base; a tilt mechanism on said base; a back shell operatively connected to said tilt mechanism for movement between upright and tilt positions; mechanical hinge means integrally formed as part of one of said back shell and said seat shell for hingedly and releasably interconnecting said back shell to said seat shell; a cushion assembly secured to said seat shell and said back shell; and said mechanical hinge means comprising one of said seat shell and said back shell defining at least one elongated tab joined to said one of said shells along a hinge line, the other of said shells defining at least one integral socket dimensioned to receive said elongated tab, said at least one tab being formed integral with a lower edge of said back shell, said seat shell including a rear edge, said seat shell defining an aperture dimensioned to receive said at least one tab, said base engaging said at least one tab and clamping said at least one tab against said seat shell, said seat shell including an integral strap which defines said aperture therewith. - View Dependent Claims (15)
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18. A chair, comprising:
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a base; a seat shell attached to said base; a tilt mechanism on said base; a back shell operatively connected to said tilt mechanism for movement between upright and tilt positions; hinge means formed as part of said back shell and said seat shell for hingedly and releasably interconnecting said back shell to said seat shell; a cushion assembly secured to said seat shell and said back shell; said hinge means comprising a pair of generally L-shaped elongated tabs integral with a lower edge of said seat shell, each of said tabs being joined to said shell adjacent a lateral edge thereof by a living hinge, a pair of straps formed integral with said seat shell adjacent a rear edge thereof, said straps defining apertures dimensioned to receive said elongated tabs; and said seat shell being fixed to said base and said base interlockingly engaging said tabs to interferingly prevent inadvertent removal of said tabs from said apertures. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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19. A chair, comprising:
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a base; a seat shell attached to said base; a tilt mechanism on said base; a back shell operatively connected to said tilt mechanism for movement between upright and tilt positions; mechanical hinge means formed as part of said back shell and said seat shell for hingedly interconnecting said back shell to said seat shell; a cushion assembly secured to said seat shell and said back shell; and said tilt mechanism including an elongated support member having a tilt end and a back end, and spring means on said base and operatively connected to said tilt end for resiliently biasing said support member to an upright position. - View Dependent Claims (20, 21, 22)
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37. An upholstered chair, comprising:
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a base; a shell mounted on said base, said shell defining an upholstery attachment member joined to the shell along an edge thereof, said shell having front and rear surfaces; and upholstery material having a portion folded over and secured to said attachment member, said material being on the front surface of said shell, said attachment member being folded against the rear surface to retain the material on said shell and to define a finished edge. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A chair, comprising:
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a base; a seat shell defining a rear edge, lateral edges and a front edge, said seat shell being fixed to said base; a back shell having a top edge, lateral edges and a front edge; at least one tab integral with one of said seat shell and said back shell; at least one socket integral with the other of said seat shell and said back shell, said at least one socket dimensioned to receive and retain said at least one tab in order to interconnect said shells; and said at least one tab being integral with a lower edge of said back shell and said seat shell and further being located at least partially between said base and said seat shell and engaged with said base and said seat shell to assist in securing said back shell relative to said base. - View Dependent Claims (49, 50, 51)
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52. In an upholstered chair having a shell structure and upholstering fabric covering the shell structure, an improvement comprising:
an upholstery attachment member joined to the shell structure along an edge thereof, said attachment member being adapted to fold against a surface of the shell structure and further being adapted to be secured to said shell structure in a folded condition with the upholstery fabric disposed therebetween to provide a finished upholstered edge. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59)
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60. A chair, comprising:
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a base; a seat shell comprising a molded structural plastic defining a rear edge, lateral edges and a front edge, said seat shell being fixed to said base; a back shell comprising a molded structural plastic having a top edge, lateral edges and a front edge; at least one tab molded integrally with one of said seat shell and said back shell; at least one socket molded integrally with the other of said seat shell and said back shell, said at least one socket being dimensioned to receive and retain said at least one tab in order to interconnect said shells; and said at least one tab being at least partially between said base and said seat shell and engaging with said base and said seat shell to assist in securing said back shell relative to said base. - View Dependent Claims (61, 62, 63, 64)
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65. A chair, comprising:
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a base; a seat shell comprising a molded structural plastic defining a rear edge, lateral edges and a front edge, said seat shell being fixed to said base; a back shell comprising a molded structural plastic having a top edge, lateral edges and a front edge; at least one tab; a hinge mechanism connecting said at least one tab to one of said seat shell and said back shell; and at least one socket molded integrally with the other of said seat shell and said back shell, said at least one socket dimensioned to receive and retain said at least one tab in order to interconnect said shells, said hinge mechanism providing relative movement between said back shell and said seat shell upon the interconnection of said shells. - View Dependent Claims (66, 67, 68, 69)
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Specification