Aeronautics and astronautics – Aircraft control
Patent
1980-02-13
1981-08-18
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft control
73147, 74520, 74521, 244 90R, 244213, B64C 1324, B64C 1328
Patent
active
042842549
ABSTRACT:
A precision actuator of minimum thickness which provides high output force with low input torque and includes a single-piece metallic rhombus with a drive assembly made up of a right-hand threaded rod that passes through a right-hand threaded side apex of the rhombus connected by a coupling to a left-hand threaded rod that passes through a left-hand threaded side apex opposite the other threaded apex of the rhombus. The right-hand threaded and left-hand threaded rods are secured to the coupling such that the drive assembly rotates as a unit. Right-hand rotation of the drive assembly increases the distance between the threaded apexes while drawing the end apexes closer together and left-hand rotation of the drive assembly draws the threaded apexes closer together forcing the end apexes further apart.
REFERENCES:
patent: 2448712 (1948-09-01), Hampshire
patent: 2861758 (1958-11-01), Howard
patent: 2973925 (1961-03-01), Wiele
patent: 3689018 (1972-09-01), Pelle et al.
patent: 3894618 (1975-07-01), Enright
Barefoot Galen L.
Singer Donald J.
Tashjian Arsen
The United States of America as represented by the Secretary of
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