Patent US3586371A successfully refreshed from Google Patents.
US3586371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seating arrangement
Assignee: Individual
•
Filing: 1969-02-17
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Granted: 1971-06-22
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Expires: 1989-02-17
Abstract
Abstract A one-piece stackable chair consists of reinforced synthetic plastic material having a wall thickness of at least 3 mm., and preferably ranging between at least 3 and 6 mm. Coupling means is provided for coupling any two such chairs releasably to one another so that at the will of a user such chairs may be arranged side-by-side in coupled relationship, or the coupling may be disengaged and the chairs may be stacked.
Inventors
- 👤 Alfred Baetzner
- 👤 Helmut Baetzner
- 👤 Kurt Tischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:29
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/12; A47C1/00; A47C1/12; A47C1/124; A47C3/04; A47C5/00; A47C5/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
194 words
A seating arrangement comprising, in combination, a pair of stackable chairs of synthetic plastic material and each including a seat, a set of legs extending downwardly from said seat by a predetermined distance and respectively having downwardly tapering outwardly open angle profiles, and sidewall portions also extending downwardly from said seat by a distance which is a fraction of said predetermined distance; and quick-release clamping means for coupling said chairs when the latter are arranged side-by-side with respective sidewall portions in facing but spaced relationship, said clamping means comprising a first clamping section having two clamping portions each adapted to engage a sidewall portion of one of said chairs at a side facing away from the other chairs, a second clamping section arranged to extend between said facing sidewall portions for engaging the latter at the facing sides thereof and for clamping a part of each of said facing sidewall portions against the respective clamping portion of said first clamping section, and hinge means hingedly connecting said first and second clamping sections for movement between an inoperative and an operative position in which latter said sections clamp said parts of said facing sidewall portions.
Claim 2
Dependent Claim
194 words
A seating arrangement comprising, in combination, a pair of stackable chairs of synthetic plastic material and each including a seat, a set of legs extending downwardly from said seat by a predetermined distance and respectively having downwardly tapering outwardly open angle profiles, and sidewall portions also extending downwardly from said seat by a distance which is a fraction of said predetermined distance; and quick-release clamping means for coupling said chairs when the latter are arranged side-by-side with respective sidewall portions in facing but spaced relationship, said clamping means comprising a first clamping section having two clamping portions each adapted to engage a sidewall portion of one of said chairs at a side facing away from the other chairs, a second clamping section arranged to extend between said facing sidewall portions for engaging the latter at the facing sides thereof and for clamping a part of each of said facing sidewall portions against the respective clamping portion of said first clamping section, and hinge means hingedly connecting said first and second clamping sections for movement between an inoperative and an operative position in which latter said sections clamp said parts of said facing sidewall portions.
Claim 3
Dependent Claim
37 words
A seating arrangement as defined in claim 1, said first and second clamping sections including respective barlike elongated portions extending in parallelism with one another; and wherein said hinge means comprises hinge straps encircling said elongated portions.
Claim 4
Dependent Claim
18 words
A seating arrangement as defined in claim 2, said straps being rigid with one of said elongated portions.
Claim 5
Dependent Claim
169 words
A seating arrangement comprising, in combination, a pair of stackable chairs of synthetic plastic material, each of said chairs including a seat, a set of legs extending downwardly from said seat by a predetermined distance and each having a downwardly tapering outwardly open angle profile, and sidewall portions also extending downwardly from said seat by a distance which is a fraction of said predetermined distance, and quick-release coupling means comprising hinged first and second coupling sections hingedly turnable relative to one another between an inoperative position and an operative position in which said first section engages sidewall portions of said chairs and said second section engages opposite sidewall portions of said chairs so as to clamp between each other adjacent sidewall portions of said chairs when the latter are arranged side-by-side with said adjacent sidewall portions in nonabutting relationship, whereby said chairs may be releasably coupled in fixed side-by-side relationship when desired and may, by turning of said coupling sections to said inoperative position, be stacked for storage purposes.
Claim 6
Dependent Claim
169 words
A seating arrangement comprising, in combination, a pair of stackable chairs of synthetic plastic material, each of said chairs including a seat, a set of legs extending downwardly from said seat by a predetermined distance and each having a downwardly tapering outwardly open angle profile, and sidewall portions also extending downwardly from said seat by a distance which is a fraction of said predetermined distance, and quick-release coupling means comprising hinged first and second coupling sections hingedly turnable relative to one another between an inoperative position and an operative position in which said first section engages sidewall portions of said chairs and said second section engages opposite sidewall portions of said chairs so as to clamp between each other adjacent sidewall portions of said chairs when the latter are arranged side-by-side with said adjacent sidewall portions in nonabutting relationship, whereby said chairs may be releasably coupled in fixed side-by-side relationship when desired and may, by turning of said coupling sections to said inoperative position, be stacked for storage purposes.
Claim 7
Dependent Claim
34 words
A seating arrangement as defined in claim 4, wherein the wall thickness of said plastic material of said chairs is between substantially 3 and 6 mm. and substantially constant throughout each of said chairs.
Claim 8
Dependent Claim
22 words
A seating arrangement as defined in claim 4, the seats of said chairs each being provided with a downwardly concave shallow depression.
Claim 9
Dependent Claim
46 words
A seating arrangement as defined in claim 6, each of said chairs further comprising a front and a rear wall portion extending between the respective sidewall portions in downward direction; and wherein said front and sidewall portions of each chair define respective upwardly convex shallow bulges.
Claim 10
Dependent Claim
25 words
A seating arrangement as defined in claim 7, each of said bulges being provided at the underside thereof with a downwardly open trough-shaped complementary cavity.
Claim 11
Dependent Claim
74 words
A seating aRrangement as defined in claim 4, said set of legs of each chair including a pair of rear legs and a pair of front legs, each front leg having an inner angle portion directed toward the corresponding inner angle portion of the other front leg in substantial parallelism therewith; and wherein each of said front wall portions has opposite ends which respectively merge substantially continuously into one of said inner angle portions.
Claim 12
Dependent Claim
25 words
A seating arrangement as defined in claim 4, each of said sidewall portions being further provided with an upwardly extending cutout of substantially parabolic contour.
Claim 13
Dependent Claim
23 words
A seating arrangement as defined in claim 4, each of said chairs further comprising a back rest extending upwardly from the respective seat.
Claim 14
Dependent Claim
48 words
A seating arrangement as defined in claim 4; said legs of said chairs each having a lower edge; and further comprising a ground-contacting supporting plate portion provided at the lower edge of each of said legs and extending transversely to the direction of elongation of the respective leg.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |