Patent US2871820A successfully refreshed from Google Patents.
US3784263A
Expired / Lapsed
US
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Snowmobile running frame and track control
Assignee: Individual
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Filing: 1972-11-17
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Granted: 1974-01-08
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Expires: 1992-11-17
Abstract
Abstract A frame device for showmobiles and other track or belt driven vehicles which includes a first frame member attachable to the vehicle with a second lower frame section arranged for supporting the lower and particularly rear track supporting elements thereon which member is pivotally attached to the first frame member and upon such pivoting, a cam element pivotally supported between the first frame member and the second frame member drives the rear track supporting member rearwardly such that the rear track supporting member will maintain proper tension on the track. Spring loading arrangements are provided to normally keep this second supporting frame member in its normal ground contacting position.
Inventors
- 👤 G Hendrickson
- 👤 K Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:35
CPC Classifications
B; B62; B62M; B62M27/00; B62M27/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
125 words
A frame and track tension control for track driven vehicles such as a snowmobile including; a. a first frame member having a pair of spaced apart, longitudinally extending frame members; b. means for securing said first frame member to the vehicle; c. a second longitudinally extending frame member pivotally connected to said first frame member adjacent the rear portions thereof; d. a plurality of track engaging wheel sets carried by said second frame member; e. one of said wheel sets arranged adjacent the rear of said second frame member and being longitudinally shiftably mounted thereon; and, f. means actuated by said second frame member to urge said one of said wheel sets rearwardly when said second frame is pivotally shifted toward said first frame member.
Claim 2
Dependent Claim
125 words
A frame and track tension control for track driven vehicles such as a snowmobile including; a. a first frame member having a pair of spaced apart, longitudinally extending frame members; b. means for securing said first frame member to the vehicle; c. a second longitudinally extending frame member pivotally connected to said first frame member adjacent the rear portions thereof; d. a plurality of track engaging wheel sets carried by said second frame member; e. one of said wheel sets arranged adjacent the rear of said second frame member and being longitudinally shiftably mounted thereon; and, f. means actuated by said second frame member to urge said one of said wheel sets rearwardly when said second frame is pivotally shifted toward said first frame member.
Claim 3
Dependent Claim
47 words
The structure set forth in claim 1 and said actuating means including at least one connective link extending between said first and second frame member and mounted for rotation about a portion of said first frame member and actuated by pivotal shifting of said second frame member.
Claim 4
Dependent Claim
25 words
The structure set forth in claim 1 and means for initially positioning the forward end of said second frame with respect to said first frame.
Claim 5
Dependent Claim
19 words
The structure set forth in claim 3 and biasing means for returning said second frame to its initial position.
Claim 6
Dependent Claim
31 words
The structure set forth in claim 1 and means for guiding said second frame with respect to said said first frame when the same is pivotally shifted towards said second frame.
Claim 7
Dependent Claim
39 words
The structure set forth in claim 1 and a. said one of said wheel sets being carried by an axle member extending across said second frame; and, b. said actuating means arranged and constructed to urge said axle rearwardly.
Claim 8
Dependent Claim
52 words
The structure set forth in claim 6 and said actuating means including a pair of connective links extending between said first and second frame members and mounted for rotation about a portion of said first frame member and actuated to shift said axle rearwardly by pivotal shifting of said second frame member.
Claim 9
Dependent Claim
18 words
The structure set forth in claim 1 and cushioning means arranged between said first and second frame member.
References Cited (Backward Citations)
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |