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. 28, 1978
Filed:
Nov. 17, 1976
Dieter Hassler, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
To compensate the Doppler flow measurement for the angle of the ultrasonic beam relative to the flowing medium, the ultrasonic applicator includes a mechanical electrical angular position sensor for generating a signal as the applicator is shifted from a perpendicular relationship to the flow axis to a desired oblique angular relationship. As a particularly preferred embodiment, a rotary member is held relative to the flow axis as the applicator axis is rotated, placing a strain gauge under a proportional tension to unbalance a bridge circuit. A further development provides a sensor output as a function of the cosine of the angle of interest so that the bridge output is in the form required to compensate the flow measurement signal without a prior trigonometric operation thereon.