Patent US4799735A successfully refreshed from Google Patents.
US4799735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair or armchair
Assignee: Kembo BV
•
Filing: 1987-05-15
•
Granted: 1989-01-24
•
Expires: 2007-05-15
Abstract
Abstract The invention relates to a chair or armchair with legs, and a seat and a backrest made in one piece with the seat. So that a chair or armchair of this type can be made stable and rigid, while preserving the essential advantages of production from plastic, at the same time making it possible for the chair or armchair to have a pleasing appearance, the legs are designed as plastic hollow parts, in which metal tubes have been received as stiffening elements.
Inventors
- 👤 Just B. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:47
CPC Classifications
A; A47; A47C; A47C5/00; A47C5/04; A47C5/08; A47B; A47B91/00; A47C5/12; A47C7/00; Y; Y10; Y10S; Y10S297/00; Y10S297/01
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
127 words
A chair or armchair including: a seat (3) and a backrest (4) integral with said seat to constitute a cask, a plurality of hollow plastic legs (9, 10) extending below said seat to maintain the latter in a raised generally horizontal position, and metal tubes (17, 18) disposed within said legs to stiffen same; each of said legs comprising first and second plastic halves (14, 15, 11, 12) which have a joining face (16, 13) extending generally parallel to a side of said chair; said plastic halves including inward projecting portions (22, 24) having snap-in edge formations (23, 25) which interact with snap-in orifices (21) in the metal tubes (17, 18) for holding the latter and said plastic halves (14, 15, 11, 12) together as a unit.
Claim 2
Dependent Claim
127 words
A chair or armchair including: a seat (3) and a backrest (4) integral with said seat to constitute a cask, a plurality of hollow plastic legs (9, 10) extending below said seat to maintain the latter in a raised generally horizontal position, and metal tubes (17, 18) disposed within said legs to stiffen same; each of said legs comprising first and second plastic halves (14, 15, 11, 12) which have a joining face (16, 13) extending generally parallel to a side of said chair; said plastic halves including inward projecting portions (22, 24) having snap-in edge formations (23, 25) which interact with snap-in orifices (21) in the metal tubes (17, 18) for holding the latter and said plastic halves (14, 15, 11, 12) together as a unit.
Claim 3
Dependent Claim
43 words
A chair or armchair as in claim 1 in which each of said metal tubes (17, 18) is of rectangular preferably square cross-section, and the snap-in orifices (21) are in forward and rear facing surfaces (19, 20) of the metal tubes (17, 18).
Claim 4
Dependent Claim
98 words
A seating assembly including: a seat (3), a plurality of hollow plastic legs (9, 10) extending below said seat to maintain the latter in a raised generally horizontal position, and metal tubes (17, 18) disposed within said legs to stiffen same; each of said legs comprising first and second plastic halves (14, 15, 11, 12); said plastic halves including inward projecting portions (22, 24) having snap-in edge formations (23, 25) which interact with snap-in orifices (21) in the metal tubes (17, 18) for holding the latter and said plastic halves (14, 15, 11, 12) together as a unit.
Claim 5
Dependent Claim
98 words
A seating assembly including: a seat (3), a plurality of hollow plastic legs (9, 10) extending below said seat to maintain the latter in a raised generally horizontal position, and metal tubes (17, 18) disposed within said legs to stiffen same; each of said legs comprising first and second plastic halves (14, 15, 11, 12); said plastic halves including inward projecting portions (22, 24) having snap-in edge formations (23, 25) which interact with snap-in orifices (21) in the metal tubes (17, 18) for holding the latter and said plastic halves (14, 15, 11, 12) together as a unit.
Claim 6
Dependent Claim
125 words
A seating assembly including: a seat (3), a plurality of hollow plastic legs (9, 10) extending below said seat to maintain the latter in a raised generally horizontal position, and metal tubes (17, 18) disposed within said legs to stiffen same; each of said legs comprising first and second plastic halves (14, 15, 11, 12); each of said tubes (17, 18) including bifurcated portions formed by a longitudinal slit (31) which extends from a tube end partway along the length of said tube; said plastic halves including inward formations (26, 30, 26) which define eyes, each of which receives an individual one of said bifurcated portions for holding the metal tubes (17, 18) and said plastic halves (14, 15, 11, 12) together as a unit.
Claim 7
Dependent Claim
125 words
A seating assembly including: a seat (3), a plurality of hollow plastic legs (9, 10) extending below said seat to maintain the latter in a raised generally horizontal position, and metal tubes (17, 18) disposed within said legs to stiffen same; each of said legs comprising first and second plastic halves (14, 15, 11, 12); each of said tubes (17, 18) including bifurcated portions formed by a longitudinal slit (31) which extends from a tube end partway along the length of said tube; said plastic halves including inward formations (26, 30, 26) which define eyes, each of which receives an individual one of said bifurcated portions for holding the metal tubes (17, 18) and said plastic halves (14, 15, 11, 12) together as a unit.
Claim 8
Dependent Claim
61 words
Chair or armchair as in claim 1, wherein in order to fix the mutual positions of the plastic halves (11, 12, 14, 15) in relation to the metal tubes, the plastic halves have, in the transverse direction, ribs which extend essentially over the entire leg length along imaginary lines joining the portions (22, 24) having the snap-in edge formations (23, 25).
Claim 9
Dependent Claim
27 words
Chair or armchair as in claim 1, wherein the metal tubes (17, 18) project a small amount from the plastic legs (9, 10) at the bottom thereof.
Claim 10
Dependent Claim
53 words
Chair or armchair as claim 1, wherein the metal tubes terminate at the bottom at a short distance above the lower ends (10') of the plastic legs (9, 10), and foot pieces are inserted into the metal tubes and project a small amount from the plastic legs (9, 10) at the bottom thereof.
Claim 11
Dependent Claim
66 words
Chair or armchair as in claim 1, wherein the inner plastic halves (14, 11) of a front and a rear leg (9, 10) are integral with an essentially horizontal element (8) that supports the side edge of the seat whilst the outer plastic halves (15, 12) of the front and/or rear leg (9, 10) are separate parts which are snapped onto said tubes as leg caps.
Claim 12
Dependent Claim
24 words
Chair or armchair as in claim 8, wherein said horizontal element (8) is a profiled plastic part open towards the inside of the chair.
Claim 13
Dependent Claim
46 words
Chair or armchair as in claim 8, wherein the inner plastic halves (14, 11) of the legs (9, 10) are arranged laterally outside the outer face (8') of the horizontal element (8), and there are rounded transitions between the inner plastic halves and the horizontal element.
Claim 14
Dependent Claim
62 words
Chair or armchair as in claim 8, wherein the inner plastic halves (14, 11) of the legs (9, 10) are arranged laterally outside the outer face (8') of the horizontal element (8), the transitions between the inner plastic halves and the horizontal element being rounded and having radii of curvature (r 1 -r 7 ) of approximately 15 to approximately 20 mm.
Claim 15
Dependent Claim
55 words
Chair or armchair as in claim 1, having a backrest part (7) which comprises at least one back wall (36) with two side walls (37) and which is fastened between the rear legs by means of these side walls, and the backrest (4) being attached against the side walls (37) of the rear backpiece (36).
Claim 16
Dependent Claim
67 words
Chair or armchair as in claim 12, wherein said backrest (4) lies on its end faces against the side walls (37) of the back wall (36), and in that said backrest part (7) and/or the backrest (4) has parts (39, 40) projecting into the cavity of the backrest part (7), thereby forming retention means or supporting points for the backrest (4) relative to the backrest part (7).
Claim 17
Dependent Claim
31 words
Chair or armchair as in claim 12, wherein the backrest part is curved rearwards at the top (at 36') and terminates in a gripping edge (6, 11) directed essentially horizontally rearwards.
Claim 18
Dependent Claim
23 words
Chair or armchair as in claim 12, wherein said cask (3, 4) is produced as a plastic part which is equipped with upholstery.
Claim 19
Dependent Claim
34 words
Chair or armchair as in claim 15, wherein the back wall (36) of said backrest part is at least partially recessed in an edge region (44) and upholstery is arranged in the recess formed.
References Cited (Backward Citations)
DE7428403U
Cited
GB725720A
Cited
US3111344A
Cited
DE1246196B
Cited
FR1505526A
Cited
US3450435A
Cited
DE2010012A1
Cited
FR1528766A
Cited
FR1584385A
Cited
DE2118216A1
Cited
US3698150A
Cited
FR2189190A1
Cited
US3873154A
Cited
FR2242054A1
Cited
US3970401A
Cited
US4123105A
Cited
FR2378475A1
Cited
US4318570A
Cited
US4348053A
Cited
US4545615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-24 | 1992-07-25 | 1993-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-24 | 1996-07-25 | 1997-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-24 | 2000-07-25 | 2001-01-24 | $7700.00 | Window Closed / Lapsed |