Patent US3797846A successfully refreshed from Google Patents.
US3797846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tow bar
Assignee: Individual
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Filing: 1972-06-23
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Granted: 1974-03-19
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Expires: 1992-06-23
Abstract
Abstract A T-shaped clamping bar includes a cross member having adjustable clamps at opposite ends thereof for attaching the cross member to front portions of the skis of a snowmobile. A tongue is pivotably coupled at one end to the cross member and extends forwardly thereof. The opposite end of the tongue includes a swivel hitch adapted to be coupled to a towing vehicle. The towing bar structure thereby permits articulation and rotation between the towed and towing vehicles to accommodate uneven terrain.
Inventors
- 👤 W Pevic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:19
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/14; B60D1/145; B60D1/155; B60D1/143
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
A tow bar comprising a cross member having fastening means on opposite ends thereof for attaching said cross member to a first vehicle wherein each end of said cross member includes a plurality of apertures formed therein and wherein said fastening means comprises a pair of U-shaped clamps, each having a pair of legs adapted to fit within said apertures in said cross arm to grip a member of a first vehicle between said cross arm and said clamps, a tongue having one end pivotally coupled to said cross member between said fastening means for vertical swinging movement therebetween, an opposite end of said tongue having a swivel hitch thereon for providing rotational movement about a longitudinal axis between said tongue and said hitch which is adapted to be pivotally coupled to a second vehicle for movement about a vertical pivot axis, said swivel hitch comprising a clevis with a pair of frontal segments extending from a wall therebetween, said wall including an aperture for receiving a bolt with a head which fits between said frontal segments to prevent rotation of the bolt relative to the clevis, and wherein said tongue includes a threaded nut rigidly attached to said other end of said tongue for receiving said bolt.
Claim 2
Dependent Claim
208 words
A tow bar comprising a cross member having fastening means on opposite ends thereof for attaching said cross member to a first vehicle wherein each end of said cross member includes a plurality of apertures formed therein and wherein said fastening means comprises a pair of U-shaped clamps, each having a pair of legs adapted to fit within said apertures in said cross arm to grip a member of a first vehicle between said cross arm and said clamps, a tongue having one end pivotally coupled to said cross member between said fastening means for vertical swinging movement therebetween, an opposite end of said tongue having a swivel hitch thereon for providing rotational movement about a longitudinal axis between said tongue and said hitch which is adapted to be pivotally coupled to a second vehicle for movement about a vertical pivot axis, said swivel hitch comprising a clevis with a pair of frontal segments extending from a wall therebetween, said wall including an aperture for receiving a bolt with a head which fits between said frontal segments to prevent rotation of the bolt relative to the clevis, and wherein said tongue includes a threaded nut rigidly attached to said other end of said tongue for receiving said bolt.
Claim 3
Dependent Claim
54 words
The apparatus as defined in claim 3 wherein said one end of said tongue includes an aperture therethrough and wherein said pivotal coupling between said tongue and said cross arm comprises a pair of flanges extending from said cross arm and including apertures therein, and pin means extending through said flanges and said tongue.
Claim 4
Dependent Claim
146 words
A T-shaped towing bar adapted to be coupled between first and second snowmobiles for providing a rigid coupling therebetween which permits tilting and articulation of the snowmobiles relative to one another as the snowmobiles travel over uneven terrain, said tow bar comprising: a tongue member having two sections telescopically fitted within one another and rigidly securable to each other; a cross member pivotally coupled to one end of said tongue for articulation about an axis transverse to the longitudinal axis of said tongue, said cross member including fastening means at opposite ends of said cross member for attaching said cross member to a first vehicle; and a clevis pivotally coupled to an opposite end of said tongue for articulation about a longitudinal axis of said tonguE and adapted to be pivotally coupled to a towing vehicle for articulation about a vertical axis relative to the vehicle.
Claim 5
Dependent Claim
146 words
A T-shaped towing bar adapted to be coupled between first and second snowmobiles for providing a rigid coupling therebetween which permits tilting and articulation of the snowmobiles relative to one another as the snowmobiles travel over uneven terrain, said tow bar comprising: a tongue member having two sections telescopically fitted within one another and rigidly securable to each other; a cross member pivotally coupled to one end of said tongue for articulation about an axis transverse to the longitudinal axis of said tongue, said cross member including fastening means at opposite ends of said cross member for attaching said cross member to a first vehicle; and a clevis pivotally coupled to an opposite end of said tongue for articulation about a longitudinal axis of said tonguE and adapted to be pivotally coupled to a towing vehicle for articulation about a vertical axis relative to the vehicle.
Claim 6
Dependent Claim
17 words
The apparatus as defined in claim 3 wherein said cross member is removably coupled to said tongue.
Claim 7
Dependent Claim
50 words
The apparatus as defined in claim 4 wherein said tongue comprises a first tubular member adapted to fit within a second tubular member and be fixedly positioned thereto by means of apertures extending through said members and a locking pin adapted to extend between said member within aligned apertures therein.
Claim 8
Dependent Claim
66 words
The apparatus as defined in claim 5 wherein said means for attaching said clevis to said opposite end of said tongue comprises a bolt having a head snugly fitted between frontal segments of said clevis and a threaded shank extending through an end wall of said clevis, and a nut rigidly fastened to said opposite end of said tongue and adapted to receive said threaded shank.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |