Patent US3738674A successfully refreshed from Google Patents.
US3738674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski equipped crutch
Assignee: Individual
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Filing: 1971-12-03
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Granted: 1973-06-12
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Expires: 1991-12-03
Abstract
Abstract A ski equipped forearm crutch that converts from a downhill skiing aid to a walking aid by rotating the ski from a horizontal (skiing) position to a vertical (walking) position. A latch controlled remotely from the hand grip locks the short ski in the vertical position enabling the user to support his weight upon the rear end of the ski. A skid resistant member is attached at the rear of the ski to further aid walking on slippery surfaces such as packed snow or ice. A claw-like member, also fixed to the rear of the ski is employed as a means of acting as a brake to slow down a moving skier by rotating the ski to a position in which only the rear of the ski contacts the snow surface thereby causing the claw to dig into the snow surface and cause a retarding force.
Inventors
- 👤 E Pauls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:39
CPC Classifications
A; A63; A63C; A63C11/00; A63C11/22; A61; A61H; A61H3/00; A61H3/02; A61H3/0288; A63C7/00; A63C7/10; A63C7/1073; A63C7/108; A63C2201/00; A63C2201/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
A ski crutch for use on supporting surfaces comprising a support shank member having grip means to permit control thereof by an arm of a user, a short ski section, said ski section having a running surface, an upwardly curved forward end, and a rear end portion, means to pivotally mount said ski section to said shank to permit movement of said ski section from a first normal position wherein said running surface engages the supporting surface when held by a user, to a second position wherein the forward end extends upwardly adjacent said shank with the rear end portion extending downwardly from said shank, releasable latch means comprising a latch member and latch pin to retain said ski section in said second position, and means mounted adjacent the grip means to permit the user to selectively disengage the latch member and latch pin.
Claim 2
Dependent Claim
144 words
A ski crutch for use on supporting surfaces comprising a support shank member having grip means to permit control thereof by an arm of a user, a short ski section, said ski section having a running surface, an upwardly curved forward end, and a rear end portion, means to pivotally mount said ski section to said shank to permit movement of said ski section from a first normal position wherein said running surface engages the supporting surface when held by a user, to a second position wherein the forward end extends upwardly adjacent said shank with the rear end portion extending downwardly from said shank, releasable latch means comprising a latch member and latch pin to retain said ski section in said second position, and means mounted adjacent the grip means to permit the user to selectively disengage the latch member and latch pin.
Claim 3
Dependent Claim
34 words
The ski crutch of claim 1 wherein said latch member includes an elongated notch permitting travel of said latch pin relative thereto for a preselected amount when the ski is in its first position.
Claim 4
Dependent Claim
35 words
The ski crutch of claim 1 and an anti-skid member extending rearwardly from said ski section and positioned to engage the supporting surface for the user when the ski section is in said second position.
Claim 5
Dependent Claim
33 words
The combination of claim 1 wherein said grip means includes a hand grip member for a user, and means employable by a hand on said hand grip operable to release said releasable means.
Claim 6
Dependent Claim
23 words
The combination of claim 4 and bias means acting between said shank member and said ski urging said ski to said second position.
Claim 7
Dependent Claim
209 words
A ski crutch for use on supporting surfaces comprising a support shank member having grip means to permit control thereof by an arm of a user, a short ski section, said ski section having a running surface, an upwardly curved forward end, and a rear end portion, means to pivotally mount said ski section to said shank to permit movement of said ski section from a first normal position wherein said running surface engages the supporting surface when held by a user, to a second position wherein the forward end extends upwardly adjacent said shank with the rear end portion extending downwardly from said shank, releasable latch means to retain said ski section in said second position, including means to limit the amount of pivotal movement between said shank member and said ski section when said ski section is in said first position, and an anti-skid member attached to the rear portion of said ski section and extending rearwardly therefrom, and being above the plane of said running surface of said ski section, said anti-skid member engaging the supporting surface when the forward end of the ski section extends upwardly with the ski section in said second position and the ski crutch is moved to engage the supporting surface.
Claim 8
Dependent Claim
209 words
A ski crutch for use on supporting surfaces comprising a support shank member having grip means to permit control thereof by an arm of a user, a short ski section, said ski section having a running surface, an upwardly curved forward end, and a rear end portion, means to pivotally mount said ski section to said shank to permit movement of said ski section from a first normal position wherein said running surface engages the supporting surface when held by a user, to a second position wherein the forward end extends upwardly adjacent said shank with the rear end portion extending downwardly from said shank, releasable latch means to retain said ski section in said second position, including means to limit the amount of pivotal movement between said shank member and said ski section when said ski section is in said first position, and an anti-skid member attached to the rear portion of said ski section and extending rearwardly therefrom, and being above the plane of said running surface of said ski section, said anti-skid member engaging the supporting surface when the forward end of the ski section extends upwardly with the ski section in said second position and the ski crutch is moved to engage the supporting surface.
Claim 9
Dependent Claim
61 words
The combination of claim 6 and a stop member attached to said ski section at the rear portion thereof positioned to engage a supporting surface for a user to restrain the rear portion of said ski section from embedding in the supporting surface when the ski section is in said second position and a downward load is placed on said shank.
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |