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US 7,850,146 B2Granted
Lineset winch with braking parts
AssigneeProduction Resource Group, LLC
InventorJames Kempf
Life of this patent
Estimating the term…
Abstract
A winch which can operate with an external brake, or the external brake can be removed to operate with an internal brake. The winch has a cable drum that rotates to get cable on and off the drum. Two eccentric cams are rotated to always keep a soft plastic part pressed against the drum.
Claims16
A winch device, comprising:
- a cable drum, which rotates in a first direction to wind cable thereon, and rotates in the opposite of said first direction to allow cable to be unwound and removed from the drum;
- a power train, which supplies rotational force to said cable drum, to wind and unwind the cable;
- and
- at least first and second cable holding cams, and a cable roller held by said first and second holding cams, said cable roller pressed against an outer surface of cable that is wound on said drum, and said cable roller holding the cable on said drum, said first and second cams automatically adjusting to different amounts of cable on said drum to press against said outer surface of said cable on said drum at different fill levels of cable on said drum.
1 more element
A winch device, comprising:
- a cable drum, which rotates in a first direction to wind cable thereon, and rotates in the opposite of said first direction to allow cable to be unwound and removed from the drum, and where said drum includes a substantially rectangular slot therein, formed in said drum to rotate when said drum rotates, such that preventing said substantially rectangular slot from rotating prevents said drum from rotating;
- and
- a powertrain, which supplies rotational force to said cable drum, to wind and unwind the cable and to rotate said rectangular slot as said cable drum rotates, wherein said powertrain includes a motor brake that brakes a motor without using said slot.
Dependencies are inferred from the claim text.