Patent US4432108A successfully refreshed from Google Patents.
US4432108A
Expired / Lapsed
US
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Therapeutic leg support
Assignee: Individual
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Filing: 1981-10-09
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Granted: 1984-02-21
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Expires: 2001-10-09
Abstract
Abstract A leg support for holding the user's leg in proper position for relieving back pain and discomfort, both from the "backlying" or supine position and for the "sidelying" positions. The support is adjustable to allow selective angular adjustment of the upper and lower legs at any of an infinite number of angles between a folded upright orientation and a flat unfolded position. The support may be flattened to the unfolded position beneath the user, allowing the user to shift from a "backlying" to a "sidelying" position without removing the support.
Inventors
- 👤 Gerda L. Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:17
CPC Classifications
A; A61; A61H; A61H1/00; A61H1/02; A61H1/0292; A61H2203/00; A61H2203/04; A61H2203/0443; A61H2203/045
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
148 words
An adjustable therapeutic leg support, comprising: a pair of rigid frame members hinged for pivotal motion about a transverse hinge axis and including an upper leg support frame member with an upper leg support surface and an opposed bottom surface on one side of the hinge axis and a lower leg support frame member with a lower leg support surface and an opposed bottom surface on an opposite side of the hinge axis; said rigid frame members including free outside end edges with surfaces thereon for directly contacting a supporting surface such as a bed; means interconnecting the frame members on opposite sides of the hinge axis for adjustably positioning the frame members about the hinge axis at any desired angular relationship between an unfolded orientation wherein both frame members are substantially flat and a folded orientation wherein both frame members are substantially upright and face one another.
Claim 2
Dependent Claim
148 words
An adjustable therapeutic leg support, comprising: a pair of rigid frame members hinged for pivotal motion about a transverse hinge axis and including an upper leg support frame member with an upper leg support surface and an opposed bottom surface on one side of the hinge axis and a lower leg support frame member with a lower leg support surface and an opposed bottom surface on an opposite side of the hinge axis; said rigid frame members including free outside end edges with surfaces thereon for directly contacting a supporting surface such as a bed; means interconnecting the frame members on opposite sides of the hinge axis for adjustably positioning the frame members about the hinge axis at any desired angular relationship between an unfolded orientation wherein both frame members are substantially flat and a folded orientation wherein both frame members are substantially upright and face one another.
Claim 3
Dependent Claim
63 words
The leg support as claimed by claim 1 wherein the rigid frame members each include parallel inside and outside end edges, with the inside edges being joined by a hinge along the hinge axis; and wherein the outside end edge of the lower leg support frame member includes a low friction covering to facilitate sliding over a support surface such as a bed.
Claim 4
Dependent Claim
76 words
The leg support as claimed by claim 1 wherein said means interconnecting the frame members is comprised of: an elongated strap mounted to the lower leg support frame member and extending to a free end; winding means on the upper leg support frame member mounting the free end of the strap for selectively taking up and letting out said strap to correspondingly draw the frame members together and allow them to part about the hinge axis.
Claim 5
Dependent Claim
65 words
The leg support as claimed by claim 3 wherein the winding means is comprised of: a spool shaft rotatably mounted to the upper leg support frame member adjacent the bottom surface and having the free end of said strap attached thereto; selectively operable crank means operably engaging the spool shaft for manual manipulation, causing rotation of the spool shaft, to wind and unwind the strap.
Claim 6
Dependent Claim
35 words
The leg support as claimed by claim 1 wherein the leg support frame members are bent transversely adjacent the hinge axis to present an upwardly facing curve complementary to the dorsal surface of the knee.
Claim 7
Dependent Claim
66 words
The leg support as claimed by claim 1 further comprising: an elongated pad having a length dimension between pad ends; means for releasably attaching the pad to the rigid frame members over the leg support surfaces and with one pad end being folded over the free end of a selected leg support frame member and attached to the selected support member along the bottom surface thereof.
Claim 8
Dependent Claim
29 words
The leg support as claimed by claim 6 further comprising a low friction cover on the pad at the free end edge of the remaining leg support frame member.
Claim 9
Dependent Claim
164 words
An adjustable therapeutic leg support, comprising: a pair of rigid frame members hinged for pivotal motion about a transverse hinge axis and including an upper leg support frame member with an upper leg support surface and an opposed bottom surface on one side of the hinge axis and a lower leg support frame member with a lower leg support surface and an opposed bottom surface on an opposite side of the hinge axis; an elongated strap mounted to the lower leg support frame member and extending to a free end; winding means on the upper leg support frame member mounting the free end of the strap for selectively taking up and letting out said strap to correspondingly draw the frame members together and allow them to part to any desired angular relationship between a folded orientation wherein both leg support frame members are substantially upright with bottom surfaces facing one another and an unfolded orientation wherein both leg support frame members are substantially flat.
Claim 10
Dependent Claim
164 words
An adjustable therapeutic leg support, comprising: a pair of rigid frame members hinged for pivotal motion about a transverse hinge axis and including an upper leg support frame member with an upper leg support surface and an opposed bottom surface on one side of the hinge axis and a lower leg support frame member with a lower leg support surface and an opposed bottom surface on an opposite side of the hinge axis; an elongated strap mounted to the lower leg support frame member and extending to a free end; winding means on the upper leg support frame member mounting the free end of the strap for selectively taking up and letting out said strap to correspondingly draw the frame members together and allow them to part to any desired angular relationship between a folded orientation wherein both leg support frame members are substantially upright with bottom surfaces facing one another and an unfolded orientation wherein both leg support frame members are substantially flat.
Claim 11
Dependent Claim
53 words
The leg support as claimed by claim 8 wherein the leg support frame members each include parallel inside and outside end edges, with the inside edges being joined by a hinge along the hinge axis; and wherein the outside end edge of the lower leg support frame member includes a low friction covering.
Claim 12
Dependent Claim
65 words
The leg support as claimed by claim 8 wherein the winding means is comprised of: a spool shaft rotatably mounted to the upper leg support frame member adjacent the bottom surface and having the free end of said strap attached thereto; selectively operable crank means operably engaging the spool shaft for manual manipulation, causing rotation of the spool shaft to wind and unwind the strap.
Claim 13
Dependent Claim
35 words
The leg support as claimed by claim 8 wherein the leg support frame members are bent transversely adjacent the hinge axis to present an upwardly facing curve complementary to the dorsal surface of the knee.
Claim 14
Dependent Claim
88 words
The leg support as claimed by claim 8 wherein the leg support frame members include free outside end edges and inside end edges, with the inside and edges hinged together and further comprising: an elongated pad extending between opposed pad ends; means for releasably attaching the pad to the frame members over the leg support surfaces and with one pad end being folded over the free outside end edge of a selected leg support frame member and attached to the selected support member along the bottom surface thereof.
Claim 15
Dependent Claim
24 words
The leg support as claimed by claim 12 further comprising a low friction cover on the remaining support member adjacent the remaining pad end.
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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) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |