The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 1992
Filed:
Dec. 19, 1990
Takahiro Yamada, Ichikawa, JP;
Katsuo Suzuki, Tokyo, JP;
Kabushiki Kaisha Shinsangyo Kaihatsu, Tokyo, JP;
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.