US4135535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid walker apparatus
Assignee: GRAHAM-FIELD TEMCO Inc A NEW JERSEY Corp
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Filing: 1977-10-04
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Granted: 1979-01-23
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Expires: 1997-10-04
Abstract
Abstract An improved invalid walker is provided with extra bracing between each front and rear leg so as to increase the strength of the structure. In addition to the handle section of the walker, there are two braces connecting each front leg to its respective rear leg so as to make three structural attachments between each front leg and the rear leg. The bracing structure is connected together in a unique circular manner. An additional set of hand grips may be placed on one set of the braces so as to help an invalid assume the standing position from the sitting position. The legs of the walker are splayed to improve stability. The walker has exceptional strength due to the additional bracing that exists between the front and the rear legs and the manner in which the bracing members are associated with each other.
Inventors
- 👤 Morton I. Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:04
CPC Classifications
A; A61; A61H; A61H3/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
358 words
An improved Invalid Walker Apparatus comprising: a pair of front legs including a first and a second front leg respectively; a pair of rear legs including a first and a second rear leg respectively; a pair of first connecting means for connecting said first rear leg to said first front leg and said second rear leg to said second front leg respectively; a first pair of grip means each attached to one of said first connecting means respectively; a first intermediate section for connecting said first pair of connecting means together in a continuous fashion; a second pair of connecting means for connecting said first rear leg to said first front leg and said second rear leg to said second front leg respectively, said second pair of connecting means being located below said first pair of connecting means; a second pair of grip means each attached to one of said second pair of connecting means respectively; a second intermediate section for continuously connecting said second pair of connecting means together, said second pair of connecting means and said second intermediate section forming a substantially U-shaped member, said U-shaped member formed by said second pair of connecting means and said second intermediate section comprising a piece of hollow metal tubing, the ends of which are bent downwardly and attached to said first and second rear legs respectively; a third pair of connecting means for connecting said first rear leg to said first front leg and said second rear leg to said second front leg respectively, said third pair of connecting means being located below said second pair of connecting means; a third intermediate section for continuously connecting said third pair of connecting means together, said third pair of connecting means and said third intermediate section forming a substantially U-shaped member, said U-shaped member formed by said third pair of connecting means and said third intermediate section comprising a piece of hollow metal tubing, the ends of which are bent upwardly and attached to said first and second rear legs respectively; and, a fourth intermediate section for connecting said first and second front legs together in a continuous U-shaped fashion.
Claim 2
Dependent Claim
358 words
An improved Invalid Walker Apparatus comprising: a pair of front legs including a first and a second front leg respectively; a pair of rear legs including a first and a second rear leg respectively; a pair of first connecting means for connecting said first rear leg to said first front leg and said second rear leg to said second front leg respectively; a first pair of grip means each attached to one of said first connecting means respectively; a first intermediate section for connecting said first pair of connecting means together in a continuous fashion; a second pair of connecting means for connecting said first rear leg to said first front leg and said second rear leg to said second front leg respectively, said second pair of connecting means being located below said first pair of connecting means; a second pair of grip means each attached to one of said second pair of connecting means respectively; a second intermediate section for continuously connecting said second pair of connecting means together, said second pair of connecting means and said second intermediate section forming a substantially U-shaped member, said U-shaped member formed by said second pair of connecting means and said second intermediate section comprising a piece of hollow metal tubing, the ends of which are bent downwardly and attached to said first and second rear legs respectively; a third pair of connecting means for connecting said first rear leg to said first front leg and said second rear leg to said second front leg respectively, said third pair of connecting means being located below said second pair of connecting means; a third intermediate section for continuously connecting said third pair of connecting means together, said third pair of connecting means and said third intermediate section forming a substantially U-shaped member, said U-shaped member formed by said third pair of connecting means and said third intermediate section comprising a piece of hollow metal tubing, the ends of which are bent upwardly and attached to said first and second rear legs respectively; and, a fourth intermediate section for connecting said first and second front legs together in a continuous U-shaped fashion.
Claim 3
Dependent Claim
70 words
The apparatus of claim 1 further including: a pair of bridging means adapted to be received in the hollow ends of the two U-shaped members formed by said second and third pairs of connecting means and the second and third intermediate members respectively, said means being such as to substantially complete a circular structure including said second and third pairs of connecting means and said second and third intermediate means.
Claim 4
Dependent Claim
32 words
The apparatus of claim 2 wherein said first and second rear legs and said first pair of connecting means and said first intermediate section comprise a continuous U-shaped piece of metallic tubing.
Claim 5
Dependent Claim
18 words
The apparatus of claim 3 wherein said first intermediate section and said fourth intermediate section are riveted together.
Claim 6
Dependent Claim
35 words
The apparatus of claim 4 wherein said second and third pair of connecting means are each connected to said first and second rear legs by rivet means which pass through one of said bridging means.
Claim 7
Dependent Claim
33 words
The apparatus of claim 5 further including foot means attached to each of said legs; and, an adjustable means associated with each foot means for modifying the effective length of each leg selectively.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |