Electrically powered boom vang for a sailboat

Abstract

A linear thread driven telescopic boom vang which is driven by a unit with at least one electric motor with an adapted planetary gear connected to a bearing case that contains thrust and bushing type bearings to accommodate a flange of a threaded rod that will extend or contract an extension arm through a drive nut fixed to it, and where the bearing case is fixed inside the main tube by radial mounted bolts or screws.

1 . I claim the invention of a telescopic boom vang, where one tube contains at least one electric motor with an adapted planetary gear which is engaged to a threaded rod which moves a drive nut fixed to a telescopic extension arm.  
     
     
         2 . I claim the invention of an electrically driven telescopic boom vang as in  claim 1  where the planetary gear is mounted to a sealed bearing case that contains thrust and bushing type bearings to accommodate a flange fixed to a threaded rod and where the bearing case is mounted inside the motor housing tube.  
     
     
         3 . I further claim the invention of a linear thread driven telescopic boom vang as specified in  claim 1  with two electric motors coupled in sequence.  
     
     
         4 . I also claim the invention of a linear thread driven telescopic boom vang as specified in  claim 1  where the motor power cables are leading from a sealed electrical socket, which is embeded in the clevis end, through a tunnel to the motor.