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US3741578A Expired / Lapsed US ⏱️ 0.0 years remaining

Hitching attachment for a snowmobile

Assignee: Individual
•
Filing: 1971-06-18
•
Granted: 1973-06-26
•
Expires: 1991-06-18
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Abstract

Abstract A hitching attachment adapted to be fixed to a snowmobile and arranged to tow a sled and, more particularly, a tobaggan. A hitching attachment having a pair of grips arranged to engage the opposite lateral sides of the curved front portion of a toboggan and arranged to be displaced relative to one another to grip toboggans of different widths. The grips are slidably mounted for transverse displacement to allow lateral shifting of the sled or toboggan and a spring engages the grips to bias the toboggan towards a neutral position. A tying line of adjustable length and tension provided with a toggle clasp joins the two grips to hold the same into firm engagement with the above lateral sides. A towing bar arranged to be pivotally connected to a snowmobile and to said grips to allow various movements of the towed toboggan relative to the towing snowmobile.

Inventors

  • 👤 R Dumont

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

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 220 words
A hitching attachment for a snowmobile comprising a towing bar means having opposite ends, a pivotal connection means provided at one of said ends of said towing bar means and arranged to be detachably connected to a rear portion of a snowmobile, for pivotal movement of the towing bar means relative to the snowmobile, a tubular member open at both ends and fixed intermediate its ends to the other end of said towing bar means and extending transversely of the latter, a pair of laterally spaced-apart sled-engaging members including grips arranged to engage the opposite lateral sides of the curved front of a toboggan and a rod member rigidly secured to each grip and slidably mounted through the open end of said transverse tubular member, whereby said sled-engaging members are laterally displaceable relative to said towing bar means, so that said grip can engage tobaggans of different widths, the inner end of each rod having a head, a compression spring surrounding each rod inside the tubular member, abutting against said head at one end and at the other end against a shoulder formed at the outer end of the tubular member, whereby the two compression coil springs urge the grip members towards each other, said hitching arrangement urging the associated tobaggan to follow into the trace of the towing snowmobile.
Claim 2
Dependent Claim 220 words
A hitching attachment for a snowmobile comprising a towing bar means having opposite ends, a pivotal connection means provided at one of said ends of said towing bar means and arranged to be detachably connected to a rear portion of a snowmobile, for pivotal movement of the towing bar means relative to the snowmobile, a tubular member open at both ends and fixed intermediate its ends to the other end of said towing bar means and extending transversely of the latter, a pair of laterally spaced-apart sled-engaging members including grips arranged to engage the opposite lateral sides of the curved front of a toboggan and a rod member rigidly secured to each grip and slidably mounted through the open end of said transverse tubular member, whereby said sled-engaging members are laterally displaceable relative to said towing bar means, so that said grip can engage tobaggans of different widths, the inner end of each rod having a head, a compression spring surrounding each rod inside the tubular member, abutting against said head at one end and at the other end against a shoulder formed at the outer end of the tubular member, whereby the two compression coil springs urge the grip members towards each other, said hitching arrangement urging the associated tobaggan to follow into the trace of the towing snowmobile.
Claim 3
Dependent Claim 18 words
A hitching attachment as claimed in claim 1, wherein said two compression springs are of substantially equal force.

References Cited (Backward Citations)

US345829A Cited
US714389A Cited
US881708A Cited
US1610083A Cited
US2743118A Cited
US2988135A Cited
US3583728A Cited
US3560013A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-25 1976-12-25 1977-06-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-25 1980-12-25 1981-06-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-25 1984-12-25 1985-06-26 $7700.00 Window Closed / Lapsed

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