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US3894643A Expired / Lapsed US ⏱️ 0.0 years remaining

Loading hoist for boats

Assignee: Individual
•
Filing: 1974-06-21
•
Granted: 1975-07-15
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Expires: 1994-06-21
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Abstract

Abstract A hoist is attached to the rear of a vehicle (such as a pick-up truck) to lift a boat from the ground to the top of the vehicle. The hoist has two telescopic members which initially are flat on the ground in extended position. The lower ends of the telescopic members are braced to the vehicle (as by clamping to the rear bumper) and are pivoted to feet which rest on the ground and the lower telescopic members are cross-braced. The upper ends of the telescopic members are clamped to the gunwales near the stern of the boat. The boat rests upside down over the telescopic members with its prow near the rear of the vehicle. On the vehicle is a winch for a rope which passes over a pulley, then down to the ground, through a guide on the prow of the boat and thence to a point of attachment at the stern. As the winch is turned, the prow is lifted up to the pulley, the stern sliding on the ground toward the vehicle. For this purpose, wheels may be attached to the stern. As the stern moves toward the vehicle, the telescopic members contract. The prow slides forward on the top of the vehicle until it is horizontal. By a different arrangement of pulleys, the hoist and winch may be used to lower the boat to the ground.

Inventors

  • 👤 Archie P Wilson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 05:52
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1008; B60P3/1025

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 213 words
A hoist for raising a boat from the ground to the top of a vehicle comprising a hoist frame, said hoist frame comprising on each side of said frame a foot resting on the ground, means for securing said feet to a vehicle, a pair of lower telescopic members, means pivotally connecting the lower end of said lower telescopic members to said feet about a transverse horizontal pivot, bracing means to hold said lower telescopic members parallel to each other, an upper telescopic member slidable in the upper end of each of said lower telescopic members, and clamp means on the upper end of each of said upper telescopic members to clamp said hoist frame to the gunwale of a boat; and lifting means for hoisting a boat fixed to said hoist frame with said hoist frame initially extended and resting on the ground and the boat inverted and overlying said hoist frame with said clamp means secured to opposite sides adjacent the stern of the boat, said lifting means including a rope, a pulley-like member at the rear of the top of the vehicle over which said rope runs and thence down to the ground, under the prow of the boat and said rope is attached to said boat at its stern.
Claim 2
Dependent Claim 213 words
A hoist for raising a boat from the ground to the top of a vehicle comprising a hoist frame, said hoist frame comprising on each side of said frame a foot resting on the ground, means for securing said feet to a vehicle, a pair of lower telescopic members, means pivotally connecting the lower end of said lower telescopic members to said feet about a transverse horizontal pivot, bracing means to hold said lower telescopic members parallel to each other, an upper telescopic member slidable in the upper end of each of said lower telescopic members, and clamp means on the upper end of each of said upper telescopic members to clamp said hoist frame to the gunwale of a boat; and lifting means for hoisting a boat fixed to said hoist frame with said hoist frame initially extended and resting on the ground and the boat inverted and overlying said hoist frame with said clamp means secured to opposite sides adjacent the stern of the boat, said lifting means including a rope, a pulley-like member at the rear of the top of the vehicle over which said rope runs and thence down to the ground, under the prow of the boat and said rope is attached to said boat at its stern.
Claim 3
Dependent Claim 22 words
A hoist according to claim 1 in which said lifting means further comprises a winch for said rope mounted on said vehicle.
Claim 4
Dependent Claim 34 words
A hoist according to claim 1 which further comprises a rod connecting the upper ends of said upper telescopic members, said clamp means being slidable on said rod to accommodate boats of different widths.
Claim 5
Dependent Claim 35 words
A hoist according to claim 3 in which said clamp means comprises a slide, an arm pivoted to said slide and means for tightening one end of said arm against the gunwale of said boat.
Claim 6
Dependent Claim 32 words
A hoist according to claim 1 which further comprises an open top channel-shape guide on the prow of said boat, said rope initially extending under said guide prior to lifting said boat.

References Cited (Backward Citations)

US1016038A Cited
US2572778A Cited
US2584163A Cited
US2486316A Cited
US3382993A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-07-14 1979-01-13 1979-07-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-07-14 1983-01-13 1983-07-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-07-14 1987-01-13 1987-07-15 $7700.00 Window Closed / Lapsed

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