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. 04, 2000
Filed:
Oct. 22, 1997
Applicant:
Inventors:
Francis Lowell, Falmouth, MA (US);
Allen Griswold, North Falmouth, MA (US);
William Calder, North Falmouth, MA (US);
Assignee:
Accusonic Technologies Inc., Falmouth, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
7386128 ;
Abstract
A pulse generator (48) in a flowmeter system (10) transmits an excitation pulse to a transducer assembly (12) by way of a signal-conduction medium (20) located in a region subject to an explosion hazard. The amplitude of the excitation pulse is great enough that it would ordinarily trigger an explosion in the hazardous region if one of its cables (22, 23) were to break. But a saturable-core transformer (T1) so limits the excitation pulse's duration as to prevent the explosion.