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:
Jul. 08, 1986
Filed:
Dec. 03, 1984
Applicant:
Inventor:
Ronald E Hileman, King, NC (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128663 ; 7386125 ;
Abstract
A method and apparatus for determining fluid motion of a fluid through a conduit whereby the signal pulse repetition frequency of a pulsed Doppler is increased significantly over known systems and the receiving means for the reflected signals is kept activated for essentially the entire time that the transmitting means is inactive so that a Doppler shift of less than one-half the signal repetition frequency is produced and frequency aliasing is avoided. The same transducer can be utilized to transmit and receive signals and detect high Doppler shifts, thus functioning similarly to continuous wave Doppler systems using separate transmit and receive transducers.