Drawworks apparatus

Details Drawworks apparatus Drawworks apparatus

2007-05-01

2007-05-01

Marcelo, Emmanuel M (Department: 3654)

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

C254S278000, C254S322000

Reexamination Certificate

active

10866803

ABSTRACT:
A drawworks having a main drum spool, a main drum shaft which passes through and is rotatably and concentrically supported by the main drum spool, an auxiliary drum spool, respective drum shafts passing through and rotatably and concentrically supported by the drum spools in a manner in which wireline pull from the spools is isolated therefrom, a clutch mechanism rotatably connected to the shafts and brake mechanisms respectively connected to the main drum spool and the auxiliary drum spool outside the working area of the drawworks.

REFERENCES:
patent: 3467360 (1969-09-01), Mizell
patent: 3614066 (1971-10-01), Day
patent: 3738614 (1973-06-01), Peterson
patent: 4192485 (1980-03-01), Rassieur et al.
patent: 4226311 (1980-10-01), Johnson et al.
patent: 4438904 (1984-03-01), White
patent: 4696377 (1987-09-01), Richardson et al.
patent: 4842250 (1989-06-01), Willis et al.
patent: 6182945 (2001-02-01), Dyer et al.

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