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:
Apr. 15, 1980
Filed:
Dec. 01, 1977
Anthony M Williams, Iver, GB;
EMI Limited, Hayes, GB;
Abstract
In radiographic apparatus of the kind known as computerized tomographic (CT) apparatus, a source of radiation is moved around a patient to irradiate the patients body from a plurality of directions. In certain types of CT apparatus the motion includes a stepped rotation. During each rotational step reaction forces are transferred to the fixed part of the apparatus and for rapid movements the reaction forces can become excessive. To reduce the reaction forces a compensating means is provided to oppose the reaction forces. This may be a resilient member such as a spring and may react against a member, such as a cam, which is shaped to adjust the compensating force to a suitable value.