Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1979-09-19
1981-10-06
Frankfort, Charles E.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
745015R, 244 49, 254411, 474140, 474144, B64C 2704, B64C 2750
Patent
active
042931096
ABSTRACT:
The guard retains the cable on a pulley of a cable control system that indes another pulley mounted on a pivotable radius arm for swingable movement relative to it. Usually, the swingable pulley is linked to a third pulley mounted on a hinged structural member which itself swings with the radius arm to and from `closed` or `open` positions. When the arc is wide, i.e. around 180.degree., conventionally mounted guards engage and bind the swinging cable. The present guard is an elongate member pivotally mounted on the radius arm. In the `closed` position, a retaining flange formed on the guard moves for cable retaining purposes into close proximity with the fixed pulley and the proximity or clearance can be adjustably fixed and locked by an eccentric stop. During the `opening` swing, the cable engages the guard which then pivots sufficiently to prevent the undesired binding. The pivotal range of the guard is restricted by a pin and slot arrangement.
REFERENCES:
patent: 1348240 (1920-08-01), Pieper et al.
patent: 3116896 (1964-01-01), Sigler et al.
patent: 3142459 (1964-07-01), Baetke
patent: 3901464 (1975-08-01), Arnstein et al.
patent: 3921938 (1975-11-01), Jupe et al.
Frankfort Charles E.
Phillips Thomas M.
Sciascia Richard S.
The United States of America as represented by the Secretary of
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