Patent ID: 9364695
Filing Date: 2016-06-14
CPC Classification: A62B,E04G

Claim Text:
1. A trolley for use in a fall arrest system, said trolley comprising a frame, a channel formed within said frame for engagement therein of a lifeline, and a self-blocking mechanism carried by said frame, said self-blocking mechanism comprising: a brake movable between a braking position wherein said brake extends within said channel for frictionally engaging the lifeline; and an enabling position wherein said brake clears said channel for clearing the lifeline; a manually operable enabling actuator connected to said brake and capable of forcing said brake towards said enabling position; a fall arrest actuator distinct from said brake and from said enabling actuator, and connected to said brake, said fall arrest actuator being movable with respect to said frame between a fall position wherein said fall arrest actuator forces said brake towards said braking position and an idle position wherein said fall arrest actuator does not force said brake towards said braking position, with said fall arrest actuator capable of overriding said enabling actuator to force said brake towards said braking position; a biasing member continuously biasing said brake towards said braking position, said enabling actuator cat able of overriding said biasing member to force said brake towards said enabling position; and a cam pivotally carried by said frame, with said brake, said enabling actuator, and said fall arrest actuator all pivotally attached to said cam.