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. 25, 1989
Filed:
Nov. 20, 1987
Applicant:
Inventor:
Charles A Reynolds, West Haven, CT (US);
Assignee:
American Home Products Corporation, , NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307601 ; 307602 ; 307596 ; 307606 ; 328 55 ;
Abstract
For controlling the firing of an electroacoustic transducer used in providing an ultrasound image of a fetus under examination, a programmable digital delay circuit includes a clock generator whose output is supplied to a delay line so as to provide a plurality of waveforms shifted in time from one another and from the waveform generated by the clock generator. Depending on the delay desired prior to firing the transducer, one of the five waveforms may be not be inverted and thereafter used for triggering a counter whose output switches logic gates for enabling a buffer and pulse shaper to fire the transducer.