Patent US4979223A successfully refreshed from Google Patents.
Patent US3620393A successfully refreshed from Google Patents.
US3620393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle towing assembly
Assignee: VULVAN EQUIPMENT CO Ltd
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Filing: 1969-03-03
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Granted: 1971-11-16
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Expires: 1989-03-03
Abstract
Abstract The present invention is concerned with a low-cost vehicle tow unit which employs a boom so disposed and of such a shape that the necessity of the normal additional tow anchor bars for spacing the towed and towing vehicles is obviated. The boom has a rear surface behind the towing vehicle and the towed vehicle is brought into abutting engagement so that the boom serves both to lift and space apart the towed and towing vehicle.
Inventors
- 👤 Leslie Bubik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:14
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/12; B60P3/125
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
148 words
A vehicle towing unit assembly comprising: means for securing said unit to a towing vehicle; a rigid boom including sidewalls, a top wall, a bottom wall and an end wall, said end wall providing an opening engageable with a lifting attachment, said boom being pivotally mounted adjacent one end for movement about an axis from a lowered position to a raised position, said boom in a raised position presenting a surface for spacing a towed vehicle away from the towing vehicle; means for moving said boom about said axis; and means for controlling movement of said boom, said lifting attachment comprising a first member swivably engageable with said opening in said boom, a second extendable member rigidly secured to said first member at an angle, said second member having a free end including at least one hook thereon, and means for adjusting the length of said second member.
Claim 2
Dependent Claim
148 words
A vehicle towing unit assembly comprising: means for securing said unit to a towing vehicle; a rigid boom including sidewalls, a top wall, a bottom wall and an end wall, said end wall providing an opening engageable with a lifting attachment, said boom being pivotally mounted adjacent one end for movement about an axis from a lowered position to a raised position, said boom in a raised position presenting a surface for spacing a towed vehicle away from the towing vehicle; means for moving said boom about said axis; and means for controlling movement of said boom, said lifting attachment comprising a first member swivably engageable with said opening in said boom, a second extendable member rigidly secured to said first member at an angle, said second member having a free end including at least one hook thereon, and means for adjusting the length of said second member.
Claim 3
Dependent Claim
178 words
A vehicle towing unit assembly comprising means for securing said unit to a towing vehicle; a rigid boom comprising a tubular member including sidewalls, a top wall and a bottom wall, said boom being pivotally mounted adjacent one end for movement about an axis from a lowered position to a raised position, said bottom wall, with said boom in a raised position, facing rearwArdly and sloping upwardly and toward the towing vehicle and having thereon a cushion for abutting engagement with a towed vehicle, said means for moving said boom about said axis including a hydraulic cylinder and piston mounted within said tubular member, one end of one of said piston or cylinder being pivotally mounted to said boom on one side of a boom pivot axis and the other end of one of said piston or cylinder being pivotally mounted on said boom on a second side of said boom pivot axis at a greater distance from said boom pivot axis than said first mentioned cylinder pivot axis whereupon extension of said piston said boom is erected.
Claim 4
Dependent Claim
178 words
A vehicle towing unit assembly comprising means for securing said unit to a towing vehicle; a rigid boom comprising a tubular member including sidewalls, a top wall and a bottom wall, said boom being pivotally mounted adjacent one end for movement about an axis from a lowered position to a raised position, said bottom wall, with said boom in a raised position, facing rearwArdly and sloping upwardly and toward the towing vehicle and having thereon a cushion for abutting engagement with a towed vehicle, said means for moving said boom about said axis including a hydraulic cylinder and piston mounted within said tubular member, one end of one of said piston or cylinder being pivotally mounted to said boom on one side of a boom pivot axis and the other end of one of said piston or cylinder being pivotally mounted on said boom on a second side of said boom pivot axis at a greater distance from said boom pivot axis than said first mentioned cylinder pivot axis whereupon extension of said piston said boom is erected.
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |