US4819936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back and leg stretcher
Assignee: Individual
•
Filing: 1988-02-05
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Granted: 1989-04-11
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Expires: 2008-02-05
Abstract
Abstract A back and leg stretcher, for applying a pusher force on an operator thereof, while supporting the operator in a seat assembly, is provided. The stretcher has a seat assembly and a pusher assembly. The seat assembly has a horizontal seat unit, a lower frame with two legs, and an upper frame with two legs. The pusher assembly has a pivot assembly, a pivot beam, a pusher unit, and a pulley system. The pivot assembly is centrally supported on the upper end of the horizontally seat unit. The pivot beam has a counterweight at a first end thereof and has a first pivot bolt at its midlength portion. The pusher unit has a pair of pusher arms pivotally supported by a second pivot bolt at one end and has a back engaging portion at its other end. The pulley system has a pulley rope, held by the operator at one end and extending through a pulley at its midlength portion and applying a force and torque on the pivot beam at its other end.
Inventors
- 👤 Donald Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:46
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/15; A63B21/151; A63B21/154; A63B23/00; A63B23/02; A63B23/0233; A63B2023/006; A63B2208/00; A63B2208/02; A63B2208/0228; A63B2208/0238; Y; Y10; Y10S; Y10S482/00; Y10S482/907
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
214 words
A back and leg stretcher comprising: a seat assembly for supporting an operator; wherein the seat assembly includes a horizontal seat unit, a lower frame for supporting a lower end of the horizontal seat unit, and an upper frame for supporting an upper end of the horizontal seat unit, wherein the lower frame has a left leg and a right leg and wherein the upper frame has a left leg and a right leg, and, a pusher assembly for applying a pusher force on an operator, wherein said pusher assembly includes a pivot assembly supported by the seat assembly, a pivot beam pivotally connected to the pivot assembly, a pusher unit pivotally connected to the pivot beam, and a pulley system for pivoting the pivot beam and pusher unit, wherein said pivot assembly has a pair of upright members disposed on each side of the pivot beam, and has a pivot bolt extending through the pair of upright members and through the pivot beam, and wherein the pivot beam has counterweight means at a lower end thereof, and wherein the pusher unit includes at least one pusher arm pivotally connected at one end to said pivot beam and a back engaging member at the other end for applying a pusher force on the operator.
Claim 2
Dependent Claim
214 words
A back and leg stretcher comprising: a seat assembly for supporting an operator; wherein the seat assembly includes a horizontal seat unit, a lower frame for supporting a lower end of the horizontal seat unit, and an upper frame for supporting an upper end of the horizontal seat unit, wherein the lower frame has a left leg and a right leg and wherein the upper frame has a left leg and a right leg, and, a pusher assembly for applying a pusher force on an operator, wherein said pusher assembly includes a pivot assembly supported by the seat assembly, a pivot beam pivotally connected to the pivot assembly, a pusher unit pivotally connected to the pivot beam, and a pulley system for pivoting the pivot beam and pusher unit, wherein said pivot assembly has a pair of upright members disposed on each side of the pivot beam, and has a pivot bolt extending through the pair of upright members and through the pivot beam, and wherein the pivot beam has counterweight means at a lower end thereof, and wherein the pusher unit includes at least one pusher arm pivotally connected at one end to said pivot beam and a back engaging member at the other end for applying a pusher force on the operator.
Claim 3
Dependent Claim
43 words
The stretcher of claim 1, wherein the pulley system includes a pulley rope having a first end for pulling by an operator and having a second end for applying a torque on the pivot beam thereby applying the pusher force on the operator.
Claim 4
Dependent Claim
35 words
The stretcher of claim 2, wherein the pulley system has at least one pulley mounted on the seat assembly at a lower end thereof for passing a midlength portion of the pulley rope there through
Claim 5
Dependent Claim
53 words
The stretcher of claim 2, wherein the pulley system includes a primary gear fixedly connected to the pivot beam and includes a secondary gear in mesh with the primary gear and rotatably mounted on the seat assembly and having an integral spool portion fixedly connected to the second end of the pulley rope.
References Cited (Backward Citations)
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US4079933A
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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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |