A descender with folding handle and integral pulley preferably includes a base plate, a cover plate, a folding handle, a handle cam, a rope cam, an euler, an integral pulley and at least one spacer. The folding handle includes a base handle portion, a folding handle portion, handle pivot pin and a biasing device. The rope cam includes an inner profile, an outer perimeter, a pivot hole and a rope groove. The pivot hole is formed through rope cam to receive a spacer post. The euler includes a round diameter and a pair of D-shaped projections extending from opposing ends of the round diameter. D-shaped openings are formed in the base and cover plates to receive the D-shaped projections. The integral pulley preferably includes a pulley bracket, a spring clip, a rope pulley and a pulley axle. The rope pulley includes a peripheral groove for retaining a rope.

An emergency escape system for high-rise building includes a launcher installed in a launch room/station of a given floor in a skyscraper and suspended by a spring-loaded reel of cable which is counterbalanced by the weights of the launcher which has mechanisms for floor retraction and movement control incorporated to it, and a descending ride unit on a guide rail which engages with the launcher and which conveys an escapee or a load whose weight upsets the equilibrium of the two opposing forces and while the ride unit disengages from the launcher when the launcher has descended through the retracted floor, the launcher returns to the launch station to maintain the equilibrium of the weight balance, leaving the descending ride unit to continue its motion down the shaft with its human cargo/es until brought to rest by a brake system of arresting cables with or without brake linings and drums; before safely ejecting the escapee/s from the ride unit away from the shaft.

An emergency escape system for high-rise building includes a launcher installed in a launch room/station of a given floor in a skyscraper and suspended by a spring-loaded reel of cable which is counterbalanced by the weights of the launcher which has mechanisms for floor retraction and movement control incorporated to it, and a descending ride unit on a guide rail which engages with the launcher and which conveys an escapee or a load whose weight upsets the equilibrium of the two opposing forces and while the ride unit disengages from the launcher when the launcher has descended through the retracted floor, the launcher returns to the launch station to maintain the equilibrium of the weight balance, leaving the descending ride unit to continue its motion down the shaft with its human cargo/es until brought to rest by a brake system of arresting cables with or without brake linings and drums; before safely ejecting the escapee/s from the ride unit away from the shaft.

Described herein is a system, method of use and Self Retracting Lifeline (SRL) apparatus using a system that governs a dynamic response between members causing a halt in relative motion between the members. Magnetic interactions, eddy current drag forces and centrifugal and/or inertial forces may provide various mechanisms of governing movement.

Described herein is a system, method of use and Self Retracting Lifeline (SRL) apparatus using a system that governs a dynamic response between members causing a halt in relative motion between the members. Magnetic interactions, eddy current drag forces and centrifugal and/or inertial forces may provide various mechanisms of governing movement.

A hoist is disclosed. In various embodiments, the hoist includes a torque tube defining a longitudinal axis and having a radially outer surface; a cable drum having a radially inner surface; and a bar spline disposed radially outward of the torque tube and radially inward of the cable drum and configured to transfer a torque from the torque tube to the cable drum.

A hoist is disclosed. In various embodiments, the hoist includes a torque tube defining a longitudinal axis and having a radially outer surface; a cable drum having a radially inner surface; and a bar spline disposed radially outward of the torque tube and radially inward of the cable drum and configured to transfer a torque from the torque tube to the cable drum.

A lever device for climbers includes an elongated body having a first end opposite a second end, a length running from the first end to the second end, a first carabiner opening defined at the first end and a second carabiner opening defined at the second end. A cord slot runs along the length from the first end to the second end and terminating at the first end. A cord connector is configured to releasably couple a cord to the second end.

A self-retracting lanyard system includes a self-retracting lanyard having a main body and a retractable line, a harness connected to the retractable line and wearable by the user of the self-retracting lanyard, and an electronic device disposable on the harness. The electronic device includes an accelerometer, a processor or programmable circuit, and a non-transitory program storage medium on which are stored instructions executable by the processor or programmable circuit to perform operations including receiving a measurement from the accelerometer, comparing the measurement to a threshold, detecting that the user of the self-retracting lanyard has fallen based on a result of the comparing, and instructing a wireless transmitter to transmit a wireless signal in response to the detection that the user has fallen.

A self-retracting lanyard system includes a self-retracting lanyard having a main body and a retractable line, a harness connected to the retractable line and wearable by the user of the self-retracting lanyard, and an electronic device disposable on the harness. The electronic device includes an accelerometer, a processor or programmable circuit, and a non-transitory program storage medium on which are stored instructions executable by the processor or programmable circuit to perform operations including receiving a measurement from the accelerometer, comparing the measurement to a threshold, detecting that the user of the self-retracting lanyard has fallen based on a result of the comparing, and instructing a wireless transmitter to transmit a wireless signal in response to the detection that the user has fallen.