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1. (WO2001005657) ANTI-FRICTION RELEASE DEVICE

Pub. No.:    WO/2001/005657    International Application No.:    PCT/US2000/019462
Publication Date: Fri Jan 26 00:59:59 CET 2001 International Filing Date: Sat Jul 15 01:59:59 CEST 2000
IPC: B64G 1/22
B64G 1/44
B64G 1/64
F16B 21/16
Applicants: SWALES AEROSPACE
Inventors: HERSH, Michael, J.
DEVINE, Edward, J.
Title: ANTI-FRICTION RELEASE DEVICE
Abstract:
A pin puller (10) combines an actuator (200) with an anti-friction release mechanism (100), according to a bilaterally symmetric geometry. The anti-friction tension release mechanism ensures that only negligible friction forces need to be overcome to operate the tension release mechanism. Thus, the actuator is isolated from the large tension force that bears on the tension release mechanism. The bilateral symmetric aspect of the structure provides for mechanical redundancy, so that, in the event that one half of the pin puller fails, it is sufficient that the other half operate properly for the tension to be successfully released. This pin puller avoids premature release because it is not susceptible to static electricity or electromagnetic radiation. The pin puller also avoids generation of large shock waves due to its slow speed of operation and because of the gradual release interaction of mechanical parts within the anti-friction release mechanism.