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:
Feb. 24, 2004
Filed:
May. 27, 2003
Deutsches Krebsforschungszentrum Stiftung des Oeffentlichen Rechts, Heidelberg, DE;
Abstract
The invention relates to a displacement-detecting element ( ) comprising a measuring resistance ( ), voltage source ( ) and a displacement-dependent voltage pick off ( ). The measuring resistance ( ) is embodied in the form of a strip. The length of the resistor ( ) corresponds to at least the maximal length of displacement ( ) of the component to be detected. The invention also relates to a multileaf collimator ( ) having such a displacement-detecting element ( ). The aim of the invention is to produce a displacement-detecting element (a) for detecting the position of the leaves ( ) in a multileaf collimator ( ) in a precise and faultless manner. The displacement detecting element ( ) is designed for detecting the displacement ( ′) of the leaves ( ) in a multileaf collimator ( ) in the following manner: the measuring resistance ( ) or the voltage pick off point ( ) are connected in a rigid manner to the leaves ( ) in order to detect the displacement and another functioning element ( or ) is arranged in a fixed manner. At least one of these functioning elements ( ) is disposed in an area ( ″) of the leaves ( ), which is not exposed to main radiation ( ).