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:
May. 04, 1993
Filed:
Jul. 03, 1991
Tommy D Wright, Irving, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
There is disclosed a system and method for rotationally controlling a circular structure, such as a dome, from the outer circumference of the dome. The system uses a linear stepping motor having a circular fixed section and a movable section. The movable section is attached to the rim of the dome and is in magnetic coupled contact with the fixed section. Controllable magnetic fields induced between the movable and stationary sections cause the movable section, and hence the dome, to drive around the circular fixed section. The dome speed is controlled by the magnetic fields and the position of the dome is monitored by monitoring the position of the active magnetic fields.