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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.:

US 4244226 B1

PDFFull Text
Date of Patent:
Jan. 13, 1981

Filed:

Oct. 04, 1979

Distance measuring apparatus and a differential pressure transmitter

Applicant:
Inventors:

Norman F Green, Warrington, PA (US);

Yoel Keiles, Havertown, PA (US);

William F Newbold, Philadelphia, PA (US);

John L Searle, Camden, NJ (US);

Douglas W Wilda, West Chester, PA (US);

Assignee:

Honeywell Inc., Minneapolis, MN (US);

Attorneys:

Marhoefer; Laurence J.

Burton; Lockwood D.

Halista; Mitchell J.

Primary Examiner:

Donald O Woodiel

Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73703 ; 73717 ; 367 99 ;
Abstract

A distance measuring apparatus and a differential pressure transmitter utilizing the same having an ultrasonic element reflector mounted between a pair of ultrasonic transducers. The alternate operation of the ultrasonic transducers produces a pair of transducer energizing signals which are related to the relative separation of the reflector element from the transducers. In one embodiment, the reflector element is mounted within a closed pressure vessel divided internally by an ultrasonic reflector diaphragm with a pair of fluid inlet lines admitting respective pressurized fluids to corresponding sides of the reflector diaphragm. The ultrasonic transducer elements are mounted on the outside of the pressure vessel on an acoustical signal transmitting interface and are arranged to alternately supply an ultrasonic signal through the pressure vessel wall to the respective side of the diaphragm reflector while an analysis of the frequency of operation of each transducer is used to determine the differential pressure applied to the diaphragm.

Find Patent Forward Citations

Green, Norman. (1981). Distance measuring apparatus and a differential pressure transmitter (U.S. Patent No. 4244226). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4244226

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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