Retaining keeper assembly for a hoisting device

Details Retaining keeper assembly for a hoisting device Retaining keeper assembly for a hoisting device

2006-02-21

2006-02-21

Marcelo, Emmanuel (Department: 3654)

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

C403S344000

Reexamination Certificate

active

07000905

ABSTRACT:
A retaining keeper assembly for a hoisting device. A shank has a plurality of circumferential grooves perpendicular to an axis of the shank. A thrust bearing surrounds the shank and is supported by the hoisting device. A split retaining collar having a plurality of interior circular protrusions mates with the circumferential grooves in the shank to prevent axial movement of the shank. A cylindrical retaining collar cover having a closed top and an open bottom encloses the retaining collar, the cover having an inner diameter slightly larger than an outer diameter of the retaining collar. A fastener mechanism fastens the retaining collar cover to the split retaining collar and to the shank.

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American Petroleum Institute, API Recommended Practice 8B, Seventh Edition, Mar. 2002, ANSI/API RP 8B/ISO 13534-2000.

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