Patent US4159111A successfully refreshed from Google Patents.
US4159111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg exercising apparatus
Assignee: Bayer Consumer Care Holdings LLC
•
Filing: 1977-06-21
•
Granted: 1979-06-26
•
Expires: 1997-06-21
Abstract
Abstract A leg exerciser for medical purposes, comprising a treadle apparatus including a base with a pair of foot pedals mounted thereon, one for each foot, arranged so that when one is pushed downwardly the other must move upwardly with dorsal and plantar flexion, imitating the muscular actions involved in normal walking. The apparatus is light in weight and can be used by patients to exercise the legs either in a prone or sitting position to reduce pressure in a vein which could lead to varicose veins or worse to thrombosis.
Inventors
- 👤 Leonard C. Lowth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:38
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/16; A63B22/0048; A63B22/0056; A61; A61H; A61H2209/00; A63B21/00; A63B21/012; A63B21/015; A63B2225/00; A63B2225/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
A portable leg exercising apparatus having a base, wherein the improvement comprises left and right foot plates pivoted at the heel ends to said base, a rocker arm pivoted at its center to said base and connected at its opposite ends to said plates whereby said plates pivot in opposite directions but not independently of each other, one of said plates pivoting downwardly while the other plate pivots upwardly, an elevated wall portion on said base, a rocker arm axle extending through said wall portion, a head on said axle abutting one side of the wall, said axle having a threaded end opposite said head, said rocker arm being pivoted on said axle between a pair of washers one of which abuts the other side of said wall, and a hand wheel having an internally threaded portion to engage the threaded end of said axle to selectively compress said rocker arm between said washers and frictionally resist rocking movement of said arm.
Claim 2
Dependent Claim
162 words
A portable leg exercising apparatus having a base, wherein the improvement comprises left and right foot plates pivoted at the heel ends to said base, a rocker arm pivoted at its center to said base and connected at its opposite ends to said plates whereby said plates pivot in opposite directions but not independently of each other, one of said plates pivoting downwardly while the other plate pivots upwardly, an elevated wall portion on said base, a rocker arm axle extending through said wall portion, a head on said axle abutting one side of the wall, said axle having a threaded end opposite said head, said rocker arm being pivoted on said axle between a pair of washers one of which abuts the other side of said wall, and a hand wheel having an internally threaded portion to engage the threaded end of said axle to selectively compress said rocker arm between said washers and frictionally resist rocking movement of said arm.
Claim 3
Dependent Claim
36 words
The apparatus of claim 1, including a plurality of washers compressed by said hand wheel, and a number of said washers being of plastic material, one of which abuts the outer face of said rocker arm.
Claim 4
Dependent Claim
99 words
A portable leg exercising apparatus highly desirable for use by bedfast and partially ambulatory patients to maintain proper pressure and flow of blood in the veins, said apparatus including a base, wherein the improvement comprises left and right foot plates pivoted at the heel ends thereof to said base, a rocker arm pivoted at its center to said base and connected at its opposite ends to said foot plates, friction pressure means bearing against the central portion of said rocker arm, and a hand wheel to adjust the amount of frictional resistance to the pivoting of the rocker arm.
Claim 5
Dependent Claim
99 words
A portable leg exercising apparatus highly desirable for use by bedfast and partially ambulatory patients to maintain proper pressure and flow of blood in the veins, said apparatus including a base, wherein the improvement comprises left and right foot plates pivoted at the heel ends thereof to said base, a rocker arm pivoted at its center to said base and connected at its opposite ends to said foot plates, friction pressure means bearing against the central portion of said rocker arm, and a hand wheel to adjust the amount of frictional resistance to the pivoting of the rocker arm.
Claim 6
Dependent Claim
78 words
The apparatus of claim 3, including a fixed axle around which the center of the rocker arm pivots, said hand wheel being threadedly connected to one end of said axle, and said friction pressure means being disposed on said axle behind said hand wheel, whereby the patient has full control of the resistance to pivoting of the rocker arm and a choice of relying only upon the hand wheel adjustment, only on self-resistance, or a combination of both.
Claim 7
Dependent Claim
63 words
The apparatus of claim 3, wherein the majority of parts of the apparatus are made of tough light weight plastic and the entire apparatus may be placed in the patient's bed to be used there even if the patient is flat on his back, and if the patient is partially ambulatory he can easily carry the apparatus to where he wants to go.
References Cited (Backward Citations)
US494221A
Cited
US735319A
Cited
US1974964A
Cited
US2253996A
Cited
US2374730A
Cited
US2815020A
Cited
US3370584A
Cited
US3525522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |