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:
Nov. 22, 1988
Filed:
Oct. 08, 1987
Applicant:
Inventor:
Karl-Eugen Aubele, Gussenstadt, DE;
Assignee:
Carl-Zeiss-Stiftung, Heidenheim/Brenz, Oberkochen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
33557 ; 33558 ; 33561 ;
Abstract
Plural switch-type probe heads used in a coordinate-measuring machine are electrically connected in parallel, and each probe head contains a resistor (106) which is series-connected to its switch contact (103/110). In addition, each probe head has a measurement resistor (108) which is independent of switch contacts, and the measurement resistors of all probe heads are also connected in parallel. The operative work-contacting switch signal is produced from a comparison of the currents flowing through the measurement resistors (108) and the series resistors (106).