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:
Jul. 05, 1983
Filed:
Oct. 15, 1981
John P Grajewski, Palmyra, WI (US);
Robert J Loyzim, Hiwassee, VA (US);
General Electric Company, Schenectady, NY (US);
Abstract
An X-ray table base, an intermediate support mounted on the base for moving bidirectionally, and a carriage with a patient cradle on it mounted for moving bidirectionally on the support. There are individual servomotors for driving the support and cradle, respectively. Each servomotor drives an analog tachometer. The tachometer signals are compared with ramp signals. When, for example, the intermediate support nears the limit of its forward travel, its servo amplifier receives a decreasing ramp signal and the servo amplifier for the cradle motor receives a concurrent increasing ramp signal such that the support decelerates to zero velocity at a predetermined rate and the cradle accelerates to the previous constant velocity of the support at a rate that results in the cradle moving at a constant rate relative to the base.