Measuring and testing – Vibration – By mechanical waves
Patent
1977-10-27
1978-12-05
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
73620, 128 2V, G01N 2900
Patent
active
041280121
ABSTRACT:
In an illustrated embodiment, a selective receiver receives a first echo impulse produced at the interface between the precursor water path and the subject under examination, as a measure of the precursor transit time (T.sub.v). Thereafter, each transmit pulse is synchronized with the receipt of such echo impulse so that multiple echoes resulting from such echo impulse coincide in time with desired echo signals, and thus do not disturb the accuracy of the display. By way of example, a trigger stage may respond to the interface echo to directly trigger transmission of the next ultrasonic pulse. The trigger stage may also actuate a first monostable with a time interval corresponding to the nominal precursor transit time (T.sub.v), a second monostable being triggered by the first monostable to establish the actual gating interval for receipt of the resultant interface echo signal. The gated interface echo signal may be compared with a standard level and any deviation used to control amplification of the receiver.
REFERENCES:
patent: 2682766 (1954-07-01), van Valkenburg
patent: 3914987 (1975-10-01), Bickel et al.
patent: 3974682 (1976-08-01), Soldner et al.
Kreitman Stephen A.
Siemens Aktiengesellschaft
LandOfFree
Ultrasonic examination apparatus operating according to the impu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic examination apparatus operating according to the impu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic examination apparatus operating according to the impu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-281748