US5079787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure equalizing support structure
Assignee: Vicair BV
•
Filing: 1990-10-01
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Granted: 1992-01-14
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Expires: 2010-10-01
Abstract
Abstract A support structure is provided which effects a pressure equalization. It mprises an enclosure filled with a large number of loose pieces. In a special embodiment the loose pieces are surrounded by a low friction material, such as nylon fabric, and are made of a deformable material, preferably foam-material. Another embodiment provides balloon-shaped pieces. Further an outer cover surrounding the enclosure may be provided.
Inventors
- 👤 Huibert P. M. Pollmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:21
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/086; A47C27/12; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05738; Y; Y10; Y10S; Y10S297/00; Y10S297/01; Y10S5/00; Y10S5/926; Y10T; Y10T428/00; Y10T428/23; Y10T428/233
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
35 words
Pressure equalizing support structure, comprising loose pieces filled in an enclosure, said loose pieces being surrounded by a low friction fabric material which are freely movable relative to each other and relative to the enclosure.
Claim 2
Dependent Claim
35 words
Pressure equalizing support structure, comprising loose pieces filled in an enclosure, said loose pieces being surrounded by a low friction fabric material which are freely movable relative to each other and relative to the enclosure.
Claim 3
Dependent Claim
20 words
Support structure according to claim 1, wherein the low friction fabric material comprises a plastic material, such as nylon fabric.
Claim 4
Dependent Claim
16 words
Support structure according to claim 1, wherein the loose pieces are made of a deformable material.
Claim 5
Dependent Claim
18 words
Support structure according to claim 3, wherein the deformable material comprises a foam material, such as polyether foam.
Claim 6
Dependent Claim
14 words
Support structure according to claim 1, wherein the loose pieces are cubical or tetrahedron-shaped.
Claim 7
Dependent Claim
14 words
Support structure according to claim 1, wherein the loose pieces are ball-shaped or balloon-shaped.
Claim 8
Dependent Claim
19 words
Support structure according to claim 1, wherein the enclosure is made of a plastic material, such as nylon fabric.
Claim 9
Dependent Claim
15 words
Support structure according to claim 1, wherein the enclosure is surrounded by an outer cover.
Claim 10
Dependent Claim
22 words
Support structure according to claim 8, wherein the outer cover is made of a low friction plastic material, such as nylon fabric.
Claim 11
Dependent Claim
16 words
Support structure according to claim 1, wherein the enclosure is provided with a closable filling opening.
Claim 12
Dependent Claim
15 words
Support structure according to claim 1, wherein the enclosure is made of an elastic material.
Claim 13
Dependent Claim
17 words
Support structure according to claim 8 wherein the outer cover is provided with a closable filling opening.
Claim 14
Dependent Claim
16 words
Support structure according to claim 8 wherein the outer cover is made of an elastic material.
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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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |