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
1997-05-01
1998-12-15
Walsh, Donald P.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254379, 188170, 188185, 188187, B66D 110
Patent
active
058487816
ABSTRACT:
A pneumatically operated balancing hoist includes a housing forming a gas chamber, an inlet for communicating with the gas chamber, a sliding piston, and a rotatable longitudinally movable cable drum. The rotatable longitudinally movable cable drum contains one or more longitudinal openings which slidably accommodate drive rods. The drive rods impart the rotation of the cable drum to a flywheel. Exterior to the flywheel are rotating brake shoes which contact a stationary braking surface when the rotation of the longitudinally movable cable drum exceeds a predetermined angular acceleration. A conically shaped brake system attached to the flywheel is mechanically engaged to prevent rotation of the cable drum until pressurized gas is supplied to the chamber.
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Kulhavy Joseph A.
Wamboldt Timothy G.
Ingersoll-Rand Company
Marcelo Emmanuel M.
Nigohosian, Jr. Leon
Thiele Alan R.
Walsh Donald P.
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