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US4856845A Expired / Lapsed US ⏱️ 0.0 years remaining

Armchair with supple backrest

Assignee: Pour La Transformation Des Matieres Plastiques Stamp Ste
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Filing: 1988-08-03
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Granted: 1989-08-15
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Expires: 2008-08-03
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Abstract

Abstract An armchair whose arms and backrest are joined by an elastic element, while the backrest extends well above the arms so that the pressure generated by the user leaning back against the backrest causes it to bend or deflect, thus improving comfort.

Inventors

  • 👤 Henry Massonnet

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 19:29
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C5/00; A47C5/12

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 178 words
In an armchair having legs, a seat, a pair of armrests extending generally upwardly from either side of the seat and a backrest which extends upwardly from the seat intermediate the armrests, wherein the legs, seat, armrest and backrest are integrally molded of a semi-rigid plastic material, the improvement comprising the backrest having a thickness so as to permit the backrest to deflect relative to the seat when pressure is applied thereto, the armrests including a main portion which is spaced relationship with respect to the backrest, said main portion of each armrest having an upper surface, each of said armrests having a generally arcuate connecting element extending from adjacent said upper surface of said main portion and integrally connecting said armrest with the backrest at a point spaced above the seat so as to define an opening between each armrest and the backrest which opening extends toward the seat, each of said connecting elements being yieldable so as to permit a limited deflection of the backrest relative to the seat when pressure is applied against the backrest.
Claim 2
Dependent Claim 178 words
In an armchair having legs, a seat, a pair of armrests extending generally upwardly from either side of the seat and a backrest which extends upwardly from the seat intermediate the armrests, wherein the legs, seat, armrest and backrest are integrally molded of a semi-rigid plastic material, the improvement comprising the backrest having a thickness so as to permit the backrest to deflect relative to the seat when pressure is applied thereto, the armrests including a main portion which is spaced relationship with respect to the backrest, said main portion of each armrest having an upper surface, each of said armrests having a generally arcuate connecting element extending from adjacent said upper surface of said main portion and integrally connecting said armrest with the backrest at a point spaced above the seat so as to define an opening between each armrest and the backrest which opening extends toward the seat, each of said connecting elements being yieldable so as to permit a limited deflection of the backrest relative to the seat when pressure is applied against the backrest.
Claim 3
Dependent Claim 41 words
The armchair of claim 1 in which said upper surface of each armrest includes an outwardly extending flange having a first width dimension, each of said connecting elements having a width dimension which is substantially less than said first width dimension.
Claim 4
Dependent Claim 44 words
The armchair of claim 1 in which the backrest includes an upper portion which extends upwardly relative to the armrest and said connecting elements a distance which is substantially equal to twice the distance between said upper surface of said armrest and the seat.
Claim 5
Dependent Claim 26 words
The armchair of claim 3 including openings in said upper portion of said backrest, said openings providing increased flexibility in said upper portion of the backrest.

References Cited (Backward Citations)

US186394A Cited
US3146028A Cited
US3756656A Cited
US4131315A Cited
US4157203A Cited
US4341419A Cited
US4418958A Cited
US4533194A Cited
US4557521A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-08-14 1993-02-13 1993-08-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-08-14 1997-02-13 1997-08-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-08-14 2001-02-13 2001-08-15 $7700.00 Window Closed / Lapsed

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