Patent US2942281A successfully refreshed from Google Patents.
Patent US4021052A successfully refreshed from Google Patents.
US4021052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Land ski apparatus
Assignee: Individual
•
Filing: 1976-04-21
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Granted: 1977-05-03
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Expires: 1996-04-21
Abstract
Abstract A land ski device comprised of a pair of ski members each having a front wheel, a reverse braking member, means for affixing the toe portion of the user's boot to the ski member, two rear wheels located at the point of balance of the ski member, and a rear stationary braking member located at the bottom rear of the ski member.
Inventors
- 👤 Lloyd C. Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:33
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/035
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
A land ski device comprising: a pair of ski members each having a front, central, and rear portion; a front wheel journaled to the front portion of each of said ski members; a reverse braking member pivotally attached in an aperture defined within the central portion of said ski member; means for releasably attaching a user's ski boot to the upper central portion of each of said ski members; a support member affixed to the central bottom portion of each of said ski members; a rear wheel journaled to said support member; and a rear stationary braking member affixed to the bottom rear portion of each of said ski members.
Claim 2
Dependent Claim
110 words
A land ski device comprising: a pair of ski members each having a front, central, and rear portion; a front wheel journaled to the front portion of each of said ski members; a reverse braking member pivotally attached in an aperture defined within the central portion of said ski member; means for releasably attaching a user's ski boot to the upper central portion of each of said ski members; a support member affixed to the central bottom portion of each of said ski members; a rear wheel journaled to said support member; and a rear stationary braking member affixed to the bottom rear portion of each of said ski members.
Claim 3
Dependent Claim
40 words
A device as recited in claim 1 wherein in addition to said rear wheel is a second rear wheel parallel to and on the same axle as said first rear wheel affixed in like manner as said first rear wheel.
Claim 4
Dependent Claim
29 words
A device as recited in claim 2 wherein a portion of said front wheel rotates within an aperture defined within the front portion of each of said ski members.
Claim 5
Dependent Claim
32 words
A device as recited in claim 3 wherein said reverse braking member's pivotal movement is controlled within a 45° range by the front and rear boundaries of said reverse braking member's aperture.
Claim 6
Dependent Claim
61 words
A device as recited in claim 4 wherein said means for releasably attaching a user's ski boot to the upper central portion of each of said ski members comprises three prongs extending from the upper central portion of each of said ski members for insertion into three receptacle slots located on the sole extension of each of said user's ski boots.
Claim 7
Dependent Claim
40 words
A device as recited in claim 5 wherein the lowest point on the circumference of each of said rear wheels is farther from the bottom of the ski member than the lowest point on the circumference of said front wheel.
Claim 8
Dependent Claim
30 words
A device as recited in claim 6 wherein said means for releasably attaching a user's ski boots is attached over the center of balance of each of said ski members.
Claim 9
Dependent Claim
32 words
A device as recited in claim 7 wherein said rear portion of each of said ski members is substantially narrower than the front and central portion of each of said ski members.
Claim 10
Dependent Claim
19 words
A device as recited in claim 8 wherein said rear stationary braking member has a removable resilient base member.
Claim 11
Dependent Claim
23 words
A device as recited in claim 9 further including a tip member pivotally attached to the lower end of said reverse braking member.
Claim 12
Dependent Claim
39 words
A device as recited in claim 10 wherein said tip member further includes: a durable member removably affixed to the front of said tip member; and a resilient member removably affixed to the rear bottom of said tip member.
Claim 13
Dependent Claim
24 words
A device as recited in claim 11 further including a hand rail located on the upper rear portion of each of said ski members.
References Cited (Backward Citations)
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Cited
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US1247801A
Cited
FR554954A
Cited
US2253012A
Cited
US2403885A
Cited
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Cited
US3622172A
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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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |