Endless belt power transmission systems or components – Means for adjusting belt tension or for shifting belt,... – Tension adjuster or shifter driven by electrical or fluid motor
Patent
1991-11-12
1993-10-19
Britts, Ramon S.
Endless belt power transmission systems or components
Means for adjusting belt tension or for shifting belt,...
Tension adjuster or shifter driven by electrical or fluid motor
474136, 474150, 474901, F16H 714
Patent
active
052540472
ABSTRACT:
An apparatus for adjusting the operable position of a roller means adapted to engage endless driven elements such as chains, belts, and the like. The apparatus includes a sprocket carrying assembly that is operably connected to the chain engaging sprocket. A hollow piston, having one end thereof rigidly attached to the chain driven piece of equipment, is slidably and non-rotatably received within the sprocket carrying assembly. The sprocket carrying assembly has a pressure receiving port and cavity therein that is adapted to receive pressurized grease. Seals are provided between the sprocket carrying assembly and piston to achieve a fluid-tight seal therebetween. The hollow piston has a screw member threadedly received therein that is adapted to be axially advanced into and out of the piston by rotating a shaft that extends through the fixed end of the piston. A locking mechanism is removably fastened to the machinery for selectively restricting the rotation of the shaft member.
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patent: 4300890 (1981-11-01), Hallmann et al.
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patent: 4650259 (1987-03-01), Alexander et al.
Britts Ramon S.
Joy Technologies Inc.
Schoeppel Roger J.
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