Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB16645/52A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sperry Products Inc
Original Assignee
Sperry Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sperry Products IncfiledCriticalSperry Products Inc
Publication of GB723158ApublicationCriticalpatent/GB723158A/en
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
G01N29/40—Detecting the response signal, e.g. electronic circuits specially adapted therefor by amplitude filtering, e.g. by applying a threshold or by gain control
Abstract
723,158. Ultrasonic inspection devices. SPERRY PRODUCTS, Inc. July 2, 1952 [July 7, 1951], No. 16645/52. Class 118 (2) [Also in Group XL (c)] The transmitted pulse from the generator 10 and the received echoes from the crystal 11 are fed to a circuit 15 (see Group XL(c)) which produces no output for an input of predetermined amplitude so that the transmitter pulse may be suppressed while echo signals 22, 23 are passed.
GB16645/52A1951-07-071952-07-02Improvements in or relating to non-linear amplifiers
ExpiredGB723158A
(en)