Patent US3781038A successfully refreshed from Google Patents.
US3781038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tow bar for towing disabled snowmobiles
Assignee: E Z TOW INC US
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Filing: 1972-06-12
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Granted: 1973-12-25
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Expires: 1992-06-12
Abstract
Abstract Apparatus for towing disabled snowmobiles, comprising a triangular frame of two elongated rod members pivotally connected at their forward end and an extensible adjusting member transversely connected therebetween. One end of the extensible member is removably connected to permit collapse of the frame when not in use. Each of the rod members pivotally carries at its rearward end a slotted member constructed and arranged to receive and retain the edge of a snowmobile ski. A ball hitch disposed at the forward end pivotally connects the apparatus to a towing snowmobile.
Inventors
- 👤 F Bachel
- 👤 R Voves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:03
CPC Classifications
B; B62; B62M; B62M27/00; B62M27/02; B60; B60D; B60D1/00; B60D1/14; B60D1/167
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
Apparatus for towing snowmobiles, comprising: a. first and second elongated members each having first and second ends; b. hitch means secured to the first end of one of said elongated members; c. the first end of the other elongated member being pivotally connected to said one elongated member rearwardly of the hitch means; d. an extensible member having first and second ends, the first end being removably and pivotally connected to said first elongated member for movement about an essentially horizontal axis, the second end of the extensible member being pivotally connected to the second elongated member for movement about an essentially vertical axis, the extensible member being disposed to define a triangular frame with said first and second elongated members; e. and ski connecting means pivotally carried by each of the first and second elongated members proximate the second end thereof, each of said ski connecting means comprising a member defining an essentially horizontal slot sized and arranged to receive the edge of a snowmobile ski, and means for clamping said snowmobile ski edge in said slot.
Claim 2
Dependent Claim
178 words
Apparatus for towing snowmobiles, comprising: a. first and second elongated members each having first and second ends; b. hitch means secured to the first end of one of said elongated members; c. the first end of the other elongated member being pivotally connected to said one elongated member rearwardly of the hitch means; d. an extensible member having first and second ends, the first end being removably and pivotally connected to said first elongated member for movement about an essentially horizontal axis, the second end of the extensible member being pivotally connected to the second elongated member for movement about an essentially vertical axis, the extensible member being disposed to define a triangular frame with said first and second elongated members; e. and ski connecting means pivotally carried by each of the first and second elongated members proximate the second end thereof, each of said ski connecting means comprising a member defining an essentially horizontal slot sized and arranged to receive the edge of a snowmobile ski, and means for clamping said snowmobile ski edge in said slot.
Claim 3
Dependent Claim
18 words
The apparatus defined by claim 12, wherein the hitch means is rigidly secured to said one elongated member.
Claim 4
Dependent Claim
43 words
The apparatus defined by claim 1, wherein the extensible member comprises: (a) first and second threaded rod members interconnected by a turnbuckle, the outer ends of the first and second rod members being pivotally connected to the first and second elongated members, respectively.
Claim 5
Dependent Claim
15 words
The apparatus defined by claim 1, wherein the hitch means comprises a ball joint hitch.
Claim 6
Dependent Claim
24 words
The apparatus defined by claim 1, wherein the ski retaining means comprises a threaded bolt disposed to project into the slot upon rotation thereof.
Claim 7
Dependent Claim
35 words
The apparatus defined by claim 1, wherein each of said first and second connecting means is connected to its respective elongated member by means of a ball joint for multi-directional pivotal movement with respect thereto.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |