Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1982-11-12
1984-05-15
Petrakes, John
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
B66D 320, B66D 326
Patent
active
044483970
ABSTRACT:
There is disclosed a pneumatic powered hoist wherein the motor driving the load lift wheel is located within a substantially sealed housing which also encloses the hoist gear and brake mechanisms. The motor exhausts into the housing allowing the exhaust to expand and circulate throughout the housing while cooling and lubricating the mechanisms therein and exit through restricted chain guides leading to and from the load lift wheel; the exhaust further expanding and cooling and lubricating the chain. The high pressure, staccato exhausts from the motor are attenuated and muffled interiorly of the housing.
REFERENCES:
patent: 2191326 (1940-02-01), Smith et al.
patent: 2823775 (1958-02-01), Zwayer
patent: 3125200 (1964-03-01), Kaman
patent: 3534553 (1970-10-01), Norton et al.
Columbus McKinnon Corporation
Hail III Joseph J.
Petrakes John
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