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:
Sep. 04, 2001
Filed:
Apr. 07, 2000
Jeffrey John McGill, Roy, UT (US);
L-3 Communications Corporation, Salt Lake City, UT (US);
Abstract
Two-axis positioning apparatus utilizes a yoke including a hub mounted on a base for rotation about a first axis, an integral bight member extending radially away from the hub in opposite directions and a pair of upstanding legs distant from the hub extending away from the bight member at spaced apart locations. A load, such as an antenna, extends between and is mounted on the upstanding legs of the yoke member for rotation about a second axis distant from the bight member. A first drive system rotatably positions the yoke about the first axis and a second drive system intermediate the yoke and the load includes a first drive component rotatable about the first axis for rotatably positioning the load about the second axis as a function of the difference in angular movement of the support member about the first axis and the angular movement of the first drive component about the first axis. A spring mechanism biases the load relative to the yoke thereby biasing the second drive system against the first drive system to minimize lost motion in both drive systems.