Patent US4561622A successfully refreshed from Google Patents.
US4561622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding table catch
Assignee: Individual
•
Filing: 1983-08-04
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Granted: 1985-12-31
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Expires: 2003-08-04
Abstract
Abstract A folding table catch (1) with pivotable table leg trestles (2) below the table place (21) and with a locking device under spring tension for locking the erected table leg trestles, displays an automatically locking, releaseable locking device (8) in both its erected and its folded position, displaying at each of both ends of a connecting rod (9) pivoted parallel to the swivel axis of the table leg trestle (2), a cam plate (10) with locking surfaces for a locking cam attached to a round pipe (5) which forms the swivel axis of the table leg trestle (2). Between at least one of the cam plates (10) and its associated locking cam, a torsion spring surrounding the round pipe (5) is employed, which is prestressed in the one direction of rotation in the folded position of the associated table leg trestle (2) and in the other direction of rotation when in the folded position of the table leg trestle (2) and is unstressed when in an intermediate position. An elongation of each cam plate (10) is designed as a release lever for the locking device (8).
Inventors
- 👤 Eberhard Heinzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:51
CPC Classifications
A; A47; A47B; A47B3/00; A47B3/08; A47B3/0809; A47B3/0815
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
172 words
A folding table fitment with table leg assemblies which are pivotal about a pivot axis into a position under the table top member, and a spring-loaded retaining means for latching the table leg assemblies in an unfolded position, a connecting tube which is mounted pivotally parallel to the axis of pivotal movement of the table leg assembly, the retaining means including, at each end of said tube, a respective cam plate having latching surfaces for a latching cam secured to a round tube forming said pivot axis of the table leg assembly, and a torsion spring between at least one of the cam plates and the associated said latching cam, said spring encircling the round tube and being stressed in one direction of rotary movement in the folded position of the associated table leg assembly and being stressed in the other direction of rotary movement in the unfolded position of the table leg assembly and being unstressed in an intermediate position of the table leg assembly between said folded and unfolded positions.
Claim 2
Dependent Claim
172 words
A folding table fitment with table leg assemblies which are pivotal about a pivot axis into a position under the table top member, and a spring-loaded retaining means for latching the table leg assemblies in an unfolded position, a connecting tube which is mounted pivotally parallel to the axis of pivotal movement of the table leg assembly, the retaining means including, at each end of said tube, a respective cam plate having latching surfaces for a latching cam secured to a round tube forming said pivot axis of the table leg assembly, and a torsion spring between at least one of the cam plates and the associated said latching cam, said spring encircling the round tube and being stressed in one direction of rotary movement in the folded position of the associated table leg assembly and being stressed in the other direction of rotary movement in the unfolded position of the table leg assembly and being unstressed in an intermediate position of the table leg assembly between said folded and unfolded positions.
Claim 3
Dependent Claim
59 words
A folding table fitment according to claim 1, and an extension portion on each cam plate formed as a release lever for the retaining means, and grip members of plastics material fitted onto the extension portions of all said cam plates, said grip members serving as stacking buffers for supporting the table top member of the next higher table.
Claim 4
Dependent Claim
103 words
A folding table fitment according to claim 1, there being two said table leg assemblies, and a connecting arrangement for the base portion of each table leg assembly secured to a portion of the round tube, which is displaced out of said axis of pivotal movement, the portion of the round tube of the one table leg assembly being displaced in the opposite direction relative to the portion of the round tube of the other table leg assembly in such a way that, when the table leg assemblies are in the folded position, the connecting arrangements thereof lie parallel one above the other.
Claim 5
Dependent Claim
42 words
A folding table fitment according to claim 1, in which the connecting tube of each retaining means is divided in two portions at a location on its length, with the provision of a small amount of rotary slippage between said two portions.
Claim 6
Dependent Claim
133 words
A folding table fitment according to claim 1, in which the round tube of each table leg assembly and the connecting tube of the associated retaining means are mounted at their ends in angle mounting members secured to the table top member in such a way, and the latching surfaces of the cam plates and the latching cams are arranged in such a way, that, when the table leg assembly is in the unfolded position, the line of action of a force which engages the latching surface of the cam plates and which acts in the unlatching direction is so displaced relative to the axis of the connecting tube of the retaining means that a rotary moment is produced at the cam plate in the latching direction, whereby the latching action is self-locking.
Claim 7
Dependent Claim
36 words
A folding table fitment according to claim 1, in which, when the table leg assembly is in the unfolded position, the latching cams bear against angle mounting members which are secured to the table top member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |