Patent US4830320A successfully refreshed from Google Patents.
US4830320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for supporting and stabilizing an article of furniture
Assignee: FOCUS 12 Inc 1603 SPRUCE BOULDER CO 80302 A CORP OF CO
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Filing: 1987-05-11
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Granted: 1989-05-16
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Expires: 2007-05-11
Abstract
Abstract A device adapted to stabilize an article of furniture on a support surface is formed as a wedge-shaped main body having upper and lower surfaces diverging from a common vertex to an end surface. A plurality of transverse rib teeth are on at least one of, but preferably both of, the upper and lower surfaces so that a plurality of devices may be stacked with the teeth preventing longitudinal slippage. The construction material is stiff, yet flexible and resilient, to help stabilize the article of furniture, and may be an anti-skid material. A cavity may be provided to enhance selected flexing, and ridges may be provided to prevent lateral slippage. The upper and lower surfaces have a common radius of curvature and may be planar or, respectively, convex and concave. The upper and lower surfaces may come together at a point, a line or a blunt nose to define the vertex. A bore may be formed through the body member for mounting and carriage.
Inventors
- 👤 Robert K. Bellows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:21
CPC Classifications
F; F16; F16M; F16M7/00; A; A47; A47B; A47B91/00; A47B91/12
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
191 words
A device adapted for insertion between a support surface and the lower support structure of an article of furniture placed thereon in order to help stabilize the article of furniture, comprising a body member formed of a relatively stiff, yet flexible material in a shape having an upper surface and a lower surface which have a common vertex and which diverge from one another to define a wedge-shaped configuration, said body member having a plurality of rib-like first teeth located on said upper surface and a cavity formed in the lower surface, said teeth oriented transversely to the direction of divergence of said upper and lower surfaces whereby said lower surface may be placed on said support surface with the common vertex defining an initial attack portion for insertion between the support surface and the article of furniture whereby said body member may be advanced until said upper surface contacts and supports the lower support structure to stabilize the article of furniture whereby said body member flexes under the weight of the article of furniture and in response to jarring forces impacting the article of furniture to further stabilize said article.
Claim 2
Independent Claim
191 words
A device adapted for insertion between a support surface and the lower support structure of an article of furniture placed thereon in order to help stabilize the article of furniture, comprising a body member formed of a relatively stiff, yet flexible material in a shape having an upper surface and a lower surface which have a common vertex and which diverge from one another to define a wedge-shaped configuration, said body member having a plurality of rib-like first teeth located on said upper surface and a cavity formed in the lower surface, said teeth oriented transversely to the direction of divergence of said upper and lower surfaces whereby said lower surface may be placed on said support surface with the common vertex defining an initial attack portion for insertion between the support surface and the article of furniture whereby said body member may be advanced until said upper surface contacts and supports the lower support structure to stabilize the article of furniture whereby said body member flexes under the weight of the article of furniture and in response to jarring forces impacting the article of furniture to further stabilize said article.
Claim 3
Dependent Claim
105 words
A stabilizing device according to claim 1 wherein said upper and lower surfaces have a common radius of curvature and including a plurality of rib-like second teeth located on the other one of said upper and lower surfaces and oriented transversely to the direction of divergence, said second teeth sized to complement and engage said first teeth whereby a plurality of said body members may be stacked one on top of the other with the upper surface of one body member engaging the lower surface of an adjacent body member with at least some of the respective first and second teeth thereon engageing one another.
Claim 4
Dependent Claim
71 words
A stabilizing device according to claim 2 wherein said radius of curvature is infinite so that said upper and lower surfaces are planar whereby a plurality of said body members may be stacked one on top of the other with a lower surface engaging either an upper or lower surface of an adjacent body member and an upper surface engaging either an upper or lower surface of an adjacent body member.
Claim 5
Dependent Claim
19 words
A stabilizing device according to claim 2 wherein said lower surface is concave and said upper surface is convex.
Claim 6
Dependent Claim
27 words
A stabilizing device according to claim 2 including means for prohibiting lateral slippage of said plurality of body members when stacked one on top of the other.
Claim 7
Dependent Claim
42 words
A stabilizing device according to claim 5 wherein said means for prohibiting lateral slippage is defined by longitudinal ridges flanking said first and second teeth whereby said edges of said first and second teeth will abut said ridges to prevent lateral movement.
Claim 8
Dependent Claim
21 words
A stabilizing device according to claim 1 wherein said material is plastic selected from a group consisting of polypropylene and polycarbonate.
Claim 9
Dependent Claim
14 words
A stabilizing device according to claim 1 wherein said material is resilient and compressible.
Claim 10
Dependent Claim
41 words
A stabilizing device according to claim 1 wherein said material is a high friction material operative to prevent slippage of the body member once it is inserted between the lower support structure of the article of furniture and the support surface.
Claim 11
Dependent Claim
34 words
A stabilizing device according to claim 1 whereby said cavity creates a wall of reduced thickness between the upper support surface and the cavity to enhance deformation of the body member about said wall.
Claim 12
Dependent Claim
48 words
A stabilizing device according to claim 1 wherein the lower surface of said body member is coated with a high friction material operative to prevent slippage of the body member once it is inserted between the lower support structure of the article of furniture and the support surface.
Claim 13
Dependent Claim
23 words
A stabilizing device according to claim 1 wherein said vertex is formed as a point of intersection of the upper and lower surfaces.
Claim 14
Dependent Claim
21 words
A stabilizing device according to claim 1 wherein said vertex is a line of intersection of the upper and lower surfaces.
Claim 15
Dependent Claim
21 words
A stabilizing device according to claim 1 wherein said vertex is a flattened nose portion between said upper and lower surfaces.
Claim 16
Dependent Claim
25 words
A stabilizing device according to claim 1 wherein said body member has a bore formed completely therethrough from the upper surface to the lower surface.
Claim 17
Independent Claim
290 words
A device adapted for insertion between a support surface and the lower support structure of an article of furniture and the like placed thereon and operative to support and stabilize said article, comprising a main body member element and formed of a relatively stiff, yet flexible and resilient material, said body member having an upper surface and a lower surface having a common vertex and a common radius of curvature, said upper and lower surfaces divergently extending in a direction of divergence from said vertex, said body member having an end surface extending between said upper and lower surfaces at a location opposite said vertex and a pair of side surfaces extending between said upper and lower surfaces on opposite sides thereof, said upper surface provided with a plurality of first ribs formed transversely to the direction of divergence and said lower surface provided with a plurality of second ribs formed transversely to the direction of divergence, said vertex defining an attack portion for said wedge-shaped element whereby the device may be inserted between the support surface and the lower support structure and advanced until the upper and lower surfaces contact the support surface and the lower support structure to stabilize the article, said body member having a longitudinal channel and a longitudinal ridge structure on each side of said first ribs and on each side of said second ribs with said first and second ribs sized to fit with one another and are operative such that a plurality of devices may be stacked with the teeth on adjacent facing ones of said upper and lower surfaces engaged and with side edges of engaged ones of the teeth abutting respective ridge structures whereby both longitudinal and lateral slippage is prevented.
Claim 18
Independent Claim
290 words
A device adapted for insertion between a support surface and the lower support structure of an article of furniture and the like placed thereon and operative to support and stabilize said article, comprising a main body member element and formed of a relatively stiff, yet flexible and resilient material, said body member having an upper surface and a lower surface having a common vertex and a common radius of curvature, said upper and lower surfaces divergently extending in a direction of divergence from said vertex, said body member having an end surface extending between said upper and lower surfaces at a location opposite said vertex and a pair of side surfaces extending between said upper and lower surfaces on opposite sides thereof, said upper surface provided with a plurality of first ribs formed transversely to the direction of divergence and said lower surface provided with a plurality of second ribs formed transversely to the direction of divergence, said vertex defining an attack portion for said wedge-shaped element whereby the device may be inserted between the support surface and the lower support structure and advanced until the upper and lower surfaces contact the support surface and the lower support structure to stabilize the article, said body member having a longitudinal channel and a longitudinal ridge structure on each side of said first ribs and on each side of said second ribs with said first and second ribs sized to fit with one another and are operative such that a plurality of devices may be stacked with the teeth on adjacent facing ones of said upper and lower surfaces engaged and with side edges of engaged ones of the teeth abutting respective ridge structures whereby both longitudinal and lateral slippage is prevented.
Claim 19
Dependent Claim
14 words
A device according to claim 16 wherein said upper and lower surfaces are planar.
Claim 20
Dependent Claim
18 words
A device according to claim 16 wherein said upper surface is convex and said lower surface is concave.
Claim 21
Dependent Claim
39 words
A device according to claim 16 including a cavity formed in the lower surface to create a wall portion of reduced thickness between said cavity and the upper surface which is operative to enhance flexing of the body member.
Claim 22
Dependent Claim
103 words
A device according to claim 16 wherein said first ribs are organized as two rows of ribs defining first pairs of ribs coextensive with one another and one member of each first pair being located on either side of a first central flat portion of said upper surface, and wherein said second ribs are organized as two rows of ribs defining second pairs of ribs coextensive with one another and one member of each second pair being located on either side of a second central flat portion of said lower surface, there being channel and ridge structure flanking each respective row of ribs.
Claim 23
Dependent Claim
22 words
A device according to claim 16 wherein said first ribs are offset in relation to said second ribs relative to said vertex.
Claim 24
Dependent Claim
33 words
A device according to claim 16 wherein said first and second ribs have a cross-section in the form of an equilateral triangle, each being oriented perpendicularly to its respective upper and lower surface.
Claim 25
Dependent Claim
20 words
A device according to claim 16 wherein said end surface is perpendicular to one of said upper and lower surfaces.
Claim 26
Dependent Claim
21 words
A device according to claim 16 wherein said end surface is oriented equiangularly with respect to said upper and lower surfaces.
Claim 27
Dependent Claim
16 words
A device according to claim 16 wherein said side surfaces are arcuately divergent from one another.
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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) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |