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. 15, 1980
Filed:
May. 12, 1978
Applicant:
Inventor:
Gerrit J Meek, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H05G / ;
U.S. Cl.
CPC ...
2504 / ; 250402 ;
Abstract
Apparatus for plan-parallel tomography comprises an X-ray tube and detector which are mechanically connected to each other by means of an extendable column consisting of two portions. Linear movement of the X-ray tube is obtained by sliding the two portions during the swiveling of the column. The use of customary servo control arrangements for sliding in or out, however, involves a position error which is approximately proportional to the sliding speed of the column portions. This position error is eliminated by the adding of a correction signals which is proportional to the sliding speed into the servo control signal.