Biaxial rotary drive unit

Details Biaxial rotary drive unit Biaxial rotary drive unit

1990-12-19

1992-10-06

Shoop, Jr., William M.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Motors with diverse motions

318 51, 318625, 342359, 343713, 343766, H02P 154

Patent

active

051534851

ABSTRACT:
A biaxial rotary drive unit drives an antenna Ant on a vehicle for rotation in both azimuthal and elevational directions. A first axis Y represents a vertical axis, and an azimuth turntable 120 is rotatable about the first axis. The second axis X represents a horizontal axis, and the antenna Ant is mounted on the turntable so as to be rotatable about the second axis in the elevational direction. The turntable 120 represents a gear of an increased diameter, which is meshed by a gear 144 of a reduced diameter to be driven thereby for rotation. A cylindrical shaft 116 extends through the center of the larger diameter gear 120. The cylindrical shaft 116 carries a ring gear meshing with a pinion gear 154, which serves driving the cylindrical shaft 116 up and down. The vertical movement of the cylindrical shaft 116 is transmitted through a link 115 to drive the antenna Ant for rotation in the elevational direction. The cylindrical shaft 116 is formed with a flute 116r extending parallel to the first axis Y and in which a rib 120r on the azimuth turntable 120 is fitted, whereby the cylindrical shaft 116 and the link 115 rotates with the azimuth turntable 120.

REFERENCES:
patent: 3707721 (1972-12-01), McCartney
patent: 4035805 (1977-07-01), Mobley
patent: 4156241 (1979-05-01), Mobley et al.
patent: 4266179 (1981-05-01), Hamm, Jr.
patent: 4691207 (1987-09-01), Timineri
patent: 4725843 (1988-02-01), Suzuki et al.
patent: 4873526 (1989-10-01), Katsuo
patent: 4888539 (1989-12-01), Estabrook et al.
patent: 5009115 (1991-04-01), Ringot et al.

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