Hauling sheave with cleats
AssigneeMarco Seattle, Inc.
InventorsHarold T. Cook, Jr., Donn B. Furlong, Robert A. Svendsen, Allan P. Rustad
Life of this patent
Estimating the term…
Abstract
A hauling block 20 having a sheave 30 comprising two identical halves 32 and 34. The hauling surfaces 40 and 42 of the sheave 30 carry outwardly extending, cleat receiving pockets 54. Reinforced cleats 50 are seated in the pockets 54 and releasably fastened to the sheave 30.
Claims10
In a hauling block for nets or line, an improved sheave mounted for rotation on a frame to form a block, the improvement comprising:
- a sheave having a central hub portion, said sheave having mutually opposing hauling surfaces extending outwardly from said hub portion, said hauling surfaces diverging as they extend outwardly from said hub portion, each side of said sheave terminating in a circumferential rim portion, each of said hauling surfaces having a plurality of cleat receiving pockets extending outwardly from said hub portion, said pockets having bottom surfaces and longitudinal side walls,
- cleats positioned in each of said pockets, each of said cleats including a rigid backbone, and a wear restraint gripping material shell formed around said backbone, said shell having a bottom portion sized to be received in said pocket, and
- means fastening said cleats to said sheave halves.
In a hauling block for nets or line, an improved sheave mounted for rotation on a frame to form a block, the improvement comprising:
- a sheave having a central hub portion, said sheave having mutually opposing hauling surfaces extending outwardly from said hub portion, said hauling surfaces diverging as they extend outwardly from said hub portion, each side of said sheave terminating in a circumferential rim portion, each of said hauling surfaces having a plurality of cleat receiving pockets extending outwardly from said hub portion, said pockets having bottom surfaces and longitudinal side walls,
- cleats positioned in each of said pockets, said cleats having side walls, the side walls of said cleats and the side walls of said pockets being angled relative to each other so as to provide an interference fit when said cleats are seated in said pocket, and
- means fastening said cleats to said sheave.
In a hauling block for nets or line, an improved sheave mounted for rotation on a frame to form a block, the improvement comprising:
- a sheave having a central hub portion, said sheave having mutually opposing hauling surfaces extending outwardly from said hub portion, said hauling surfaces diverging as they extend outwardly from said hub portion, each side of said sheave terminating in a circumferential rim portion, each of said hauling surfaces having a plurality of cleat receiving pockets extending outwardly from said hub portion, said pockets having bottom surfaces and longitudinal side walls, and
- cleats positioned in each of said pockets, the side walls of said cleats and the side walls of said pockets being angled relative to each other so as to provide an interference fit when said cleats are seated in said pocket, and
- means fastening said cleats to said sheave halves.
In a hauling block for nets or line, an improved sheave mounted for rotation on a frame to form a block, the improvement comprising:
- a heave having a central hub portion, said sheave having mutually opposing hauling surfaces extending outwardly from said hub portion, said hauling surfaces diverging as they extend outwardly from said hub portion, each side of said sheave terminating in a circumferential rim portion, each of said hauling surfaces having a plurality of cleat receiving pockets extending outwardly from said hub portion, said pockets having bottom surfaces and longitudinal side walls, and
- cleats positioned in each of said pockets, each of said cleats having a rigid backbone, and a wear restraint gripping material shell formed around said backbone, said shell having a bottom portion sized to be received in said pocket, said cleat having sufficient thickness relative to said pocket so that it extends outwardly from the hauling surface of one sheave half toward the mutually opposing hauling surface of the other sheave half, and
- means fastening said cleats to said sheave halves.
Dependencies are inferred from the claim text.