Self-releasing choker
OwnerPhillip A. Schmidt, James H. Nortoninventors
Life of this patent
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Abstract
A self-releasing choker has ferrule holding jaws in a casing movable between a ferrule accepting station, a load carrying station, and a ferrule releasing station located intermediate the other two stations. Locking means holds the jaws closed while in the load carrying station and releasing means permits the jaws to open only while they are moving past the ferrule releasing station in the direction of the ferrule accepting station. Dampening means provides a time delay to keep the jaws from moving all of the way to the ferrule releasing station when the load is only momentarily taken off the ferrule.
Claims12
A device for selectively carrying and self-releasing a load comprising:
- a support;
- load holding means carried by the support and movable relative thereto between a load accepting position and a load retaining position, said load holding means also being movable relative to said support between (a) a load accepting station whereat the load holding means is free to accept a load and move to the load retaining position, (b) a load carrying station whereat the load holding means is held in load retaining position and (c) a load releasing station located intermediate said load accepting and carrying stations whereat the holding means can move from its load retaining position to its load accepting position;
- locking means for keeping the load holding means in its load retaining position at the carrying station;
- releasing means operatively associated with the load holding means, said releasing means having an inactive mode when the load holding means is moving past the load releasing station from the load accepting station to the load carrying station, and having an active releasing mode when the load is moving past the load releasing station back toward the load accepting station whereby the load holding means is moved from its load retaining position back to its load accepting position to release the load;
- and
- return means for the load holding means acting between said load holding means and said support for yieldingly resisting movement of the load holding means from the load accepting station toward the load carrying station responsive to application of the load to the load holding means.
A self-releasing choker for use with a ferrule connected to the end of a cable, comprising:
- a casing;
- ferrule holding means carried by the casing and movable relative thereto between a ferrule accepting position and a ferrule retaining position, said ferrule holding means also being movable relative to said casing between (a) a ferrule accepting station whereat the ferrule holding means is free to accept a ferrule and move to the ferrule retaining position, (b) a load carrying station whereat the ferrule holding means is held in ferrule retaining position, and (c) a ferrule releasing station located intermediate said ferrule accepting and load carrying stations whereat the ferrule holding means can move from its ferrule retaining position to its ferrule accepting position;
- locking means for keeping the ferrule holding means in its ferrule retaining position while at the load carrying position;
- releasing means operatively associated with the ferrule holding means, said releasing means having an inactive mode when the ferrule holding means is moving past the ferrule releasing station from the ferrule accepting station to the load carrying station, and having an active releasing mode when the ferrule is moving past the ferrule releasing station back toward the ferrule accepting station whereby the ferrule holding means is moved from its ferrule retaining position back to its ferrule accepting position to release the ferrule;
- and
- return means for the ferrule holding means acting between said ferrule holding means and said casing for yieldingly resisting movement of the ferrule holding means from the ferrule accepting station toward the load carrying station responsive to application of load to a ferrule held by the ferrule holding means.
Dependencies are inferred from the claim text.