Patent US4733290A successfully refreshed from Google Patents.
Patent US5497520A successfully refreshed from Google Patents.
US5497520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable leg and foot support
Assignee: Individual
•
Filing: 1994-07-11
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Granted: 1996-03-12
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Expires: 2014-07-11
Abstract
Abstract An inflatable support for selectively supporting a persons's feet and legs comprises an air bag having a semi-tubular top panel, an essentially flat bottom panel, and side panels that are "hinged" together at collapse joints in a manner to fold together to permit the top panel to collapse downwardly against the bottom panel. The side panels fold inwardly toward one another in an accordion-like fashion to permit essentially full collapse of the foot and leg support to a thickness of only that of the combined thicknesses of rubber material, of which the support is constructed. A remote compressed air source communicates with an inflation valve to inflate the foot and leg support, and a second deflation valve exhausts the pressurized air within the air bag to atmosphere. A remote control unit permits the user to activate the inflation and deflation valves to inflate/deflate the air bag to raise/lower the user's feet and legs as desired.
Inventors
- 👤 Richard D. Kunz
- 👤 Dale O. Kelsch
- 👤 Lamar C. Beynon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:33
CPC Classifications
A; A47; A47C; A47C20/00; A47C20/02; A47C20/021; A61; A61G; A61G7/00; A61G7/05; A61G7/065; A61G7/075; A61G7/0755
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
262 words
An inflatable leg and foot support, comprising: (a) an air bag comprising: a top panel having two opposed long edges and two opposed short edges; a bottom panel having two opposed long edges and two opposed short edges; two sidewalls connected to the top and bottom panels by respective soft rubber collapse joints along respective long edges thereof, each sidewall comprising an upper panel and a lower panel, each sidewall panel having two opposed long edges and two opposed short edges, one long edge of each sidewall panel being connected together by a soft rubber collapse joint, the other long edge of each sidewall panel being connected to a respective air bag top and bottom panel by respective soft rubber collapse joints; and two flexible end panels, each connected to a respective air bag top panel short edge, air bag bottom panel short edge, and two sidewall panel short edges; the air bag top panel short edges and sidewall lower panel short edges being arcuate, and the air bag bottom panel short edges and sidewall upper panel short edges being straight, when the air bag is inflated; and (b) inflating and deflating means for controlled inflation and deflation of the air bag, the inflating and deflating means comprising: a pressurized air source; an air supply hose connecting the pressurized air source and the air bag; an inflation valve disposed in the air supply hose; a deflation valve disposed in the air supply hose; and control means connected to the inflation and deflation valves for controlling inflation and deflation of the air bag.
Claim 2
Dependent Claim
262 words
An inflatable leg and foot support, comprising: (a) an air bag comprising: a top panel having two opposed long edges and two opposed short edges; a bottom panel having two opposed long edges and two opposed short edges; two sidewalls connected to the top and bottom panels by respective soft rubber collapse joints along respective long edges thereof, each sidewall comprising an upper panel and a lower panel, each sidewall panel having two opposed long edges and two opposed short edges, one long edge of each sidewall panel being connected together by a soft rubber collapse joint, the other long edge of each sidewall panel being connected to a respective air bag top and bottom panel by respective soft rubber collapse joints; and two flexible end panels, each connected to a respective air bag top panel short edge, air bag bottom panel short edge, and two sidewall panel short edges; the air bag top panel short edges and sidewall lower panel short edges being arcuate, and the air bag bottom panel short edges and sidewall upper panel short edges being straight, when the air bag is inflated; and (b) inflating and deflating means for controlled inflation and deflation of the air bag, the inflating and deflating means comprising: a pressurized air source; an air supply hose connecting the pressurized air source and the air bag; an inflation valve disposed in the air supply hose; a deflation valve disposed in the air supply hose; and control means connected to the inflation and deflation valves for controlling inflation and deflation of the air bag.
Claim 3
Dependent Claim
28 words
An inflatable leg and foot support as set forth in claim 1, wherein said bottom panel and said sidewall panels are constructed of a heavy duty rubber material.
Claim 4
Dependent Claim
26 words
An inflatable leg and foot support as set forth in claim 1, wherein said top panel and end panels are constructed of a soft rubber material.
Claim 5
Dependent Claim
20 words
An inflatable leg and foot support as set forth in claim 1, wherein said top panel is semi-cylindrical in shape.
Claim 6
Dependent Claim
20 words
An inflatable leg and foot support as set forth in claim 1, wherein the inflating and deflating means is user-adjustable.
Claim 7
Dependent Claim
25 words
An inflatable leg and foot support as set forth in claim 1, wherein the inflation valve and deflation valve are operational independently of each other.
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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) | 1999-03-12 | 1999-09-11 | 2000-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-12 | 2003-09-11 | 2004-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-12 | 2007-09-11 | 2008-03-12 | $7700.00 | Window Closed / Lapsed |