Cable derailment responsive apparatus
OwnerJan K. Kunczynskiinventor
Life of this patent
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Abstract
A cable derailment responsive apparatus for use in terminating the operation of a cable drive for a chairlift, ski lift, gondola or the like is disclosed. The apparatus includes a spring biasing a portion of the pulley assembly for movement if the cable jumps the sheaves, further includes an electrical circuit having a plug-in connector that is mechanically pulled apart from the remainder of the circuit upon cable derailment to interrupt or deactivate the cable drive. Upon remounting of the cable on the sheave assemblies, the connector can be plugged back into the circuit to permit driving of the cable.
Claims10
A cable derailment responsive apparatus for use in terminating the operation of cable drive means for a moving cable supported upon a pulley assembly upon derailment of the cable from the pulley assembly, said pulley assembly including mounting means movably mounted to support means and carrying pulley means thereon;
- and said derailment responsive apparatus including spring biasing means coupled to said mounting means to bias said mounting means to a moved position upon derailment of said cable from said pulley assembly, and deactivation means connected to said mounting means and formed to terminate operation of said cable drive means upon movement of said mounting means to said moved position, said deactivation means including an electrical circuit having a circuit interrupting portion, and connector means coupled to said circuit interrupting portion and connected to transmit motion from said mounting means to said circuit interrupting portion, wherein the improvement in said cable derailment responsive apparatus is comprised of:
- said circuit interrupting portion being provided by a pair of mechanically separable electrical couplers, and said connector means being connected to one of said couplers to transmit motion thereto in a direction causing separation of said couplers to mechanically open said electrical circuit upon movement of said mounting means to said moved position.
A cable derailment responsive apparatus for use in terminating the operation of cable drive means for a moving cable supported upon a pulley assembly upon derailment of the cable from the pulley assembly, said pulley assembly including a pair of relatively spaced apart mounting means movably mounted to support means and each carrying pulley means thereon;
- and said derailment responsive apparatus including a tension spring, a pair of tendon means coupled to each of said mounting means and coupled to opposite ends of said tension spring to bias each of said mounting means to a moved position upon derailment of said cable from said pulley means and deactivation means connected to each of said mounting means and formed to terminate operation of said cable drive means upon movement of one of said mounting means to said moved position, said deactivation means including an electrical circuit having a circuit interrupting portion, and connector means coupled to said circuit interrupting portion and connected to transmit motion from said mounting means to said circuit interrupting portion to mechanically open said electrical circuit at said circuit interrupting portion upon movement of said one of said mounting means to said moved position, wherein the improvement in said apparatus is comprised of:
- said deactivating means including a housing mounted around said tension spring and said circuit interrupting portion being mounted inside said housing;
- and
- said tendon means being unsupported between said mounting means and said tension spring for suspension of said tension spring, housing and circuit interrupting portion between said mounting means by said tendon means.
Dependencies are inferred from the claim text.