Locking control and overtravel safety stop system for variable l

Details Locking control and overtravel safety stop system for variable l Locking control and overtravel safety stop system for variable l

1976-06-28

1978-03-21

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Radially extensible or retractible rotor working member

416 89, B64C 1128

Patent

active

040800970

ABSTRACT:
A locking control system and an overtravel safety top system are presented for a variable length rotor blade system. The lock system has linkage and pawl apparatus operated by a pilot actuated lock shaft to lock and unlock the blade adjustment system. A traveling nut on the lock shaft actuates the lock linkage, either directly or through the lock shaft to lock the blade adjustment system to prevent overretraction or overextension in the event of malfunction of the extension control system.

REFERENCES:
patent: 1145388 (1915-07-01), Rochon
patent: 2852207 (1958-09-01), Jovanovich
patent: 3768923 (1973-10-01), Fradenburgh
patent: 3814351 (1974-06-01), Bielawa
patent: 4007997 (1977-02-01), Yarm et al.

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