Pit depth gauge

Details Pit depth gauge Pit depth gauge

1981-09-28

1983-05-31

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73105, 73627, 33169B, G01B 528, G01N 2900

Patent

active

043855229

ABSTRACT:
A pit depth gauge for use as an accessory to an underwater ultrasonic probe omprises two resiliently biased, freely flooded telescoping members a first of which has a first end wall adapted to ride on a surface to be inspected and a second of which has a second end wall adapted to be connected to the probe with the probe transducer in registration with an acoustic energy port. A stylus is fixed to the second member for axial movement with the transducer toward the first end wall as the stylus enters a pit, whereby the length of an acoustic water path is related to the pit depth.

REFERENCES:
patent: 3209582 (1965-10-01), Greenberg
patent: 3237446 (1966-03-01), Wood
patent: 3808878 (1974-05-01), Dini
patent: 3821854 (1974-07-01), Koch
patent: 3936945 (1976-02-01), Jevremov
patent: 4107244 (1978-08-01), Ochiai et al.
patent: 4161885 (1979-07-01), Sack et al.
patent: 4280354 (1981-07-01), Wheeler et al.

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