07410150 is referenced by 3 patents and cites 14 patents.

An improved hoist for raising and lowering a weighted object secured to a hoist cable, wherein the improvement comprises a safety switch in series with an up-down switch of the hoist. The safety switch has an actuating member with spaced-apart first and second portions on either side of the hoist cable and proximate the take-up shaft of the winch, and, when the hoist cable becomes unweighted or becomes wound upon the take-up shaft in an improper direction, the hoist cable moves the actuating member and prevents the up-down switch from applying power to the winch motor, thereby disabling the winch motor.

Title
Winch safety switch for a hoist
Application Number
11/981012
Publication Number
7410150 (B1)
Application Date
October 30, 2007
Publication Date
August 12, 2008
Inventor
John W Falls
Lakeland
TN, US
Agent
Walker McKenzie & Walker P C
Assignee
Aladdin Light Lift
TN, US
IPC
B66D 1/50
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