US4637414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arm piece assembly for crutch
Assignee: LAMICO Inc A CORP OF WI
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Filing: 1985-04-18
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Granted: 1987-01-20
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Expires: 2005-04-18
Abstract
Abstract An improved arm piece assembly for a crutch, comprising an inner molded plastic arm piece and an outer removable elastomeric cover. The arm piece is formed with a pair of opposed side surfaces, a pair of end surfaces and a top surface that connects the side surfaces and end surfaces. One of the side surfaces is concave in a direction between the end surfaces to conform to the configuration of the rib cage of the user. A pair of tubular members or sockets are disposed on the interior of the arm piece and receive the bows of the crutch. Each end surface is provided with an opening and a fastening member, such as a screw, interconnects the bow with the respective socket and is disposed in alignment with the opening in the end surface. The elastomeric cover fits snugly over the arm piece and is provided with cushioning ribs on the inner surface which are disposed in engagement with the concave side surface of the arm piece.
Inventors
- 👤 Ted F. Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:10
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
133 words
An arm piece assembly for a crutch, comprising an arm piece having a pair of opposed side surfaces, a pair of end surfaces and a top surface interconnecting the side surfaces and the end surfaces, said top surface being generally concave in a direction between said end surfaces, one of said side surfaces being concave in a direction between said end surfaces and being inclined upwardly in a direction toward the other of said side surfaces, connecting means disposed on the interior of the arm piece to removably receive the bows of a crutch, each end surface having an opening therein, fastening means interconnecting the connecting means with the respective bow and disposed in alignment with said opening, and a removable elastomeric cover snugly fitting over said arm piece and enclosing said openings.
Claim 2
Dependent Claim
133 words
An arm piece assembly for a crutch, comprising an arm piece having a pair of opposed side surfaces, a pair of end surfaces and a top surface interconnecting the side surfaces and the end surfaces, said top surface being generally concave in a direction between said end surfaces, one of said side surfaces being concave in a direction between said end surfaces and being inclined upwardly in a direction toward the other of said side surfaces, connecting means disposed on the interior of the arm piece to removably receive the bows of a crutch, each end surface having an opening therein, fastening means interconnecting the connecting means with the respective bow and disposed in alignment with said opening, and a removable elastomeric cover snugly fitting over said arm piece and enclosing said openings.
Claim 3
Dependent Claim
31 words
The arm piece assembly of claim 1, and including cushioning means disposed on the inner surface of said cover and disposed in engagement with said one surface of said arm piece.
Claim 4
Dependent Claim
16 words
The assembly of claim 2, wherein said cushioning means comprises a plurality of generally parallel ribs.
Claim 5
Dependent Claim
30 words
The assembly of claim 1, wherein said connecting means comprises a pair of spaced tubular members, each tubular member disposed to telescopically receive one of the bows of said crutch.
Claim 6
Dependent Claim
12 words
The assembly of claim 4, wherein said fastening means comprises a screw.
Claim 7
Dependent Claim
26 words
The assembly of claim 4, and including stop means associated with each tubular member to limit the insertion of the respective bow with said tubular member.
Claim 8
Dependent Claim
32 words
The assembly of claim 1, wherein said cover comprises a pair of sides, a pair of opposed ends, and a top interconnecting said side and ends, said cover having an open bottom.
Claim 9
Dependent Claim
12 words
The assembly of claim 1, wherein the other side surface is flat.
Claim 10
Dependent Claim
178 words
A crutch construction, comprising a crutch having a pair of generally parallel vertical bows, and an arm piece assembly connected to the upper ends of said bows, said arm piece assembly including a molded plastic arm piece having a pair of opposed side surfaces and a pair of opposed end surfaces and a top surface interconnecting said side surfaces and said end surfaces, said arm piece having an open bottom, one of said side surfaces being generally concave in a horizontal direction between said end surfaces to conform to the curvature of the rib cage of the user, a pair of connecting members disposed on the interior of the arm piece, the upper ends of said bows being telescopically connected to said connecting members, each end surface having an opening therein, fastening means aligned with each opening for interconnecting the connecting member and the respective bow, a removable elastomeric cover snugly fitting over said arm piece, and cushioning means on the inner surface of said cover and disposed in engagement with said one surface of said arm piece.
Claim 11
Dependent Claim
178 words
A crutch construction, comprising a crutch having a pair of generally parallel vertical bows, and an arm piece assembly connected to the upper ends of said bows, said arm piece assembly including a molded plastic arm piece having a pair of opposed side surfaces and a pair of opposed end surfaces and a top surface interconnecting said side surfaces and said end surfaces, said arm piece having an open bottom, one of said side surfaces being generally concave in a horizontal direction between said end surfaces to conform to the curvature of the rib cage of the user, a pair of connecting members disposed on the interior of the arm piece, the upper ends of said bows being telescopically connected to said connecting members, each end surface having an opening therein, fastening means aligned with each opening for interconnecting the connecting member and the respective bow, a removable elastomeric cover snugly fitting over said arm piece, and cushioning means on the inner surface of said cover and disposed in engagement with said one surface of said arm piece.
Claim 12
Dependent Claim
27 words
The crutch construction of claim 9, wherein each of said openings extends upwardly from the bottom edge of the respective end surface, said cover enclosing said openings.
Claim 13
Dependent Claim
17 words
The crutch construction of claim 9, wherein said cushioning means comprises a plurality of generally sinusoidal ribs.
Claim 14
Dependent Claim
22 words
The crutch construction of claim 9, wherein said cushioning means comprises a plurality of projections on the inner surface of said cover.
Claim 15
Dependent Claim
158 words
A crutch construction, comprising a crutch having a pair of generally parallel vertical bows, and an arm piece assembly connected to the upper ends of said bows, said armpiece assembly including an inner rigid arm piece having a pair of opposed side surfaces and a pair of opposed end surfaces and a top surface interconnecting said side surface and said end surfaces, said arm piece having an open bottom, one of said side surfaces being generally concave in a horizontal direction between said end surfaces and being inclined upwardly in a direction toward the other of said side surfaces, a pair of connecting members disposed on the interior of said arm piece, the upper ends of said bows being telescopically connected to said connecting members, each end surface having an opening therein, fastening means aligned with each opening for interconnecting the connecting member and the respective bow, and a removable elastomeric cover snugly fitting over said arm piece.
Claim 16
Dependent Claim
158 words
A crutch construction, comprising a crutch having a pair of generally parallel vertical bows, and an arm piece assembly connected to the upper ends of said bows, said armpiece assembly including an inner rigid arm piece having a pair of opposed side surfaces and a pair of opposed end surfaces and a top surface interconnecting said side surface and said end surfaces, said arm piece having an open bottom, one of said side surfaces being generally concave in a horizontal direction between said end surfaces and being inclined upwardly in a direction toward the other of said side surfaces, a pair of connecting members disposed on the interior of said arm piece, the upper ends of said bows being telescopically connected to said connecting members, each end surface having an opening therein, fastening means aligned with each opening for interconnecting the connecting member and the respective bow, and a removable elastomeric cover snugly fitting over said arm piece.
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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) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |