Genie Industries, Inc.

Willibald Neubauer

Allen L Luft

Michael C Burkey

A portable telescopic hoist has an auxiliary tilt-back frame at the rear for supporting the hoist when it is tilted from its normal upright position to a backward sloped position to clear an overhead restriction. The tilt-back frame has a strut with a gas spring therein having a nearly constant spring force. This strut has a downwardly sloped operating position from a detachable connection at the back of the mast of the hoist.

Tilt mechanism for portable hoist

A telescopic pneumatic hoist has a flexible stationary hollow probe on its base arranged to unseat a check ball in the piston of the lowest intermediate stage when the piston is near the base. When such a condition exists, the probe closely interfits with the piston and has a radial port communicating with the underside of the piston. The probe connects at the bottom with a supply and exhaust passage which also communicates with the underside of the piston via a check valve controlled secondary passage.

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Seattle, WA, United States of America

Willibald Neubauer