US4423849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-supporting structure
Assignee: KRAMER HENRY M 608 SANDRIDGE RD CHARLOTTE N C 28210
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Filing: 1982-06-14
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Granted: 1984-01-03
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Expires: 2002-06-14
Abstract
Abstract A self-supporting structure is provided which may be useful for a plant stand or as a support for garden crops, or other purposes. The structure includes three legs and a clinch plate having a hole therethrough for each leg, the holes being slightly larger than the legs and extending through the clinch plate at angles relative to the axis of the group of holes and relative to the axis of the radius of each hole. The legs extend through the clinch plate and converge in frictional binding relation to each other at a zone of convergence spaced from the clinch plate. That zone of convergence and the engagement of the legs with the upper and lower edges of the holes through the clinch plate provide the only support for the structure and it is self-supporting without any extraneous means such as glue, nails, or the like. A table top may be supported on or adjacent the upper ends of the legs.
Inventors
- 👤 Peter J. Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:59
CPC Classifications
A; A47; A47G; A47G7/00; A47G7/02; A47G7/04; A47G7/041; F; F16; F16M; F16M11/00; F16M11/02; F16M11/16; F16M11/20; F16M11/24; F16M11/242; F16M13/00; F16M2200/00; F16M2200/02; F16M2200/021; F16M2200/022; F16M2200/025; F16M2200/027
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
A self-supporting structure comprising a plurality of legs extending angularly relative to each other, a clinch plate, said clinch plate having a group of holes extending therethrough and corresponding in number to the number of legs and each of said holes being defined by upper and lower marginal edges and having cross-sectional dimensions corresponding to but greater than the cross-sectional dimensions of a corresponding leg to receive said leg by hand manipulation, said legs engaging the clinch plate at the upper and lower marginal edges of their respective holes to define a first zone of support at the clinch plate and extending angularly toward each other from the clinch plate and engaging each other at a zone of convergence spaced from the clinch plate to define a second zone of support.
Claim 2
Dependent Claim
131 words
A self-supporting structure comprising a plurality of legs extending angularly relative to each other, a clinch plate, said clinch plate having a group of holes extending therethrough and corresponding in number to the number of legs and each of said holes being defined by upper and lower marginal edges and having cross-sectional dimensions corresponding to but greater than the cross-sectional dimensions of a corresponding leg to receive said leg by hand manipulation, said legs engaging the clinch plate at the upper and lower marginal edges of their respective holes to define a first zone of support at the clinch plate and extending angularly toward each other from the clinch plate and engaging each other at a zone of convergence spaced from the clinch plate to define a second zone of support.
Claim 3
Dependent Claim
134 words
A structure according to claim 1 wherein the holes extend through the clinch plate at an acute angle to the axis of the group of holes and at an acute angle to a radial line drawn from the center of the group of holes through the center of that hole, the center lines of the legs forming a hyperboloid of revolution of one sheet about the axis of the group of holes and defining a circle of the gorge at a plane within said zone of convergence, and the center lines of the holes forming a hyperboloid of revolution of one sheet about the axis of the group of holes with a circle of the gorge which is smaller than the minimum circle of the gorge defined by the center lines of the legs.
Claim 4
Dependent Claim
135 words
A self-supporting structure comprising a plurality of legs extending angularly relative to each other, a clinch plate having a group of holes therethrough, each said hole being defined by upper and lower marginal edges and a hole being provided for the reception of each of said legs and having an inner diameter corresponding to the outer diameter of a leg to freely receive that leg, each of said holes extending through the clinch plate at an acute angle to the axis of the group of holes and at an acute angle to a radial line drawn from the center of the clinch plate through the center of that hole, and the legs extending through the holes in engagement with the upper and lower edges of the holes and into frictional locking engagement with each other.
Claim 5
Dependent Claim
135 words
A self-supporting structure comprising a plurality of legs extending angularly relative to each other, a clinch plate having a group of holes therethrough, each said hole being defined by upper and lower marginal edges and a hole being provided for the reception of each of said legs and having an inner diameter corresponding to the outer diameter of a leg to freely receive that leg, each of said holes extending through the clinch plate at an acute angle to the axis of the group of holes and at an acute angle to a radial line drawn from the center of the clinch plate through the center of that hole, and the legs extending through the holes in engagement with the upper and lower edges of the holes and into frictional locking engagement with each other.
Claim 6
Dependent Claim
14 words
A structure according to claim 3 including a table top supported on the legs.
Claim 7
Dependent Claim
14 words
A structure according to claim 4 wherein the legs extend through the table top.
Claim 8
Dependent Claim
18 words
A structure according to claim 3 wherein a pin extends radially through each leg beneath the clinch plate.
Claim 9
Dependent Claim
20 words
A structure according to claim 4 wherein the table top has openings in its lower surface to receive the legs.
Claim 10
Dependent Claim
29 words
A structure according to claim 1 wherein pins extend radially through the legs beneath the clinch plate to equally maintain the ends of the legs from the clinch plate.
Claim 11
Dependent Claim
69 words
A self-supporting structure comprising a plurality of legs and a clinch plate, the clinch plate having openings therethrough dimensioned to receive the legs in equally spaced relation to each other, the clinch plate and the legs passing therethrough forming a first zone of support, and a second zone of support defined by the frictional engagement of the legs on each side of a plane parallel to the clinch plate.
Claim 12
Dependent Claim
69 words
A self-supporting structure comprising a plurality of legs and a clinch plate, the clinch plate having openings therethrough dimensioned to receive the legs in equally spaced relation to each other, the clinch plate and the legs passing therethrough forming a first zone of support, and a second zone of support defined by the frictional engagement of the legs on each side of a plane parallel to the clinch plate.
Claim 13
Dependent Claim
13 words
A structure according to claim 8 including a top supported on the legs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |