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. 19, 1988
Filed:
Jul. 31, 1985
Applicant:
Inventor:
Gottfried Hug, Waldkirch-Siensbach, DE;
Assignee:
Erwin Sick GmbH Optik-Elektronik, Waldkirch, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356 731 ; 324510 ;
Abstract
An apparatus for measuring the transit time of electromagnetic waves has a pulse generator (11) which is arranged in a feedback loop (12) and which can be triggered by pulses. Either the measurement path (13) or a reference path (14) with a reference receiver (16) at the end of it can be selectively included in the feedback loop (12). The pulse generator is also connected to a computing/counting stage (19) which counts the pulse transmitted during the measurement and reference periods separately and computes the transit time therefrom (FIG. 1).