US3949773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible tip for crutch or the like
Assignee: Individual
•
Filing: 1975-03-10
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Granted: 1976-04-13
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Expires: 1995-03-10
Abstract
Abstract A convertible tip for a crutch and the like having a pole and an elastomeric cup-shaped member disposed on the end of the pole for contacting the ground, and a cleat member attachable to the cup-shaped member, by means of a releasable fastener, and another cup-shaped member for covering the cleat, so that the tip is convertible between the arrangement of exposing the cleat, for supporting on ice or the like, and covering the cleat, for supporting on a floor.
Inventors
- 👤 Anthony E. Marescalco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:51
CPC Classifications
A; A45; A45B; A45B9/00; A45B9/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
172 words
A convertible tip for a crutch, pole, and the like, comprising an elastomeric cup-shaped member adapted to be disposed on the end of said pole for encircling the latter to be available for contacting the ground during the use of supporting a person, a cylindrical cup-shaped cleat member having teeth spaced around the edge of the cylinder thereof for engaging the ground when in position on said cup-shaped member, the aforesaid cup-shaped members both including base portions and being disposed in base portion-to-base portion abutting position, a releasable fastener extending through said base portions of the aforesaid cup-shaped members for co-axially removably attaching said cleat member to said elastomeric cup-shaped member, and a second elastomeric cup-shaped member snugly disposed on said cleat member and being frictionally held thereto by virtue of the elastomeric stretch over said cleat member and covering said teeth to prevent engagement of a floor by said teeth and said second elastomeric cup-shaped member being removable from said cleat member to permit engagement of the floor by said teeth.
Claim 2
Dependent Claim
172 words
A convertible tip for a crutch, pole, and the like, comprising an elastomeric cup-shaped member adapted to be disposed on the end of said pole for encircling the latter to be available for contacting the ground during the use of supporting a person, a cylindrical cup-shaped cleat member having teeth spaced around the edge of the cylinder thereof for engaging the ground when in position on said cup-shaped member, the aforesaid cup-shaped members both including base portions and being disposed in base portion-to-base portion abutting position, a releasable fastener extending through said base portions of the aforesaid cup-shaped members for co-axially removably attaching said cleat member to said elastomeric cup-shaped member, and a second elastomeric cup-shaped member snugly disposed on said cleat member and being frictionally held thereto by virtue of the elastomeric stretch over said cleat member and covering said teeth to prevent engagement of a floor by said teeth and said second elastomeric cup-shaped member being removable from said cleat member to permit engagement of the floor by said teeth.
Claim 3
Dependent Claim
35 words
The convertible tip as claimed in claim 1, including a rigid washer disposed in said second elastomeric cup-shaped member and in abutment with said teeth for protecting said second elastomeric cup-shaped member from said teeth.
Claim 4
Dependent Claim
40 words
The convertible tip as claimed in claim 1, wherein said releasable fastener is a flat-headed bolt with the head thereof disposed inside the first said elastomeric cup-shaped member and with the shank of said bolt extending into said cleat member.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |