Multi range impulse hammer

Details Multi range impulse hammer Multi range impulse hammer

1985-01-03

1986-10-07

Ruehl, Charles A.

Measuring and testing

Testing by impact or shock

Specimen impactor detail

73DIG4, G01N 330, G01M 700, G01P 1509

Patent

active

046152091

ABSTRACT:
An impulse hammer of a variable sensitivity type permitting the user to instantly select from at least three different full scale operational ranges which includes an elongated handle having a plastic grip at one end and a head carried at its other end normal thereto. A head extender is detachable carried on one end of the head while a force sensor terminating in an impact tip is fixedly carried on the opposite end. An electrical circuit couples to a transducer in the force sensor and communicates through the head and handle with a coaxial connector located at the end of the handle. An impedance converter is included in the circuit transforming the high impedance signal from the transducer to a low impedance output voltage. A manual selector switch changes the voltage gain of the sensor to avoid amplification of noise level.

REFERENCES:
patent: 3421364 (1969-01-01), Moneypenny et al.
patent: 4030339 (1977-06-01), Yakshin et al.
patent: 4422320 (1983-12-01), Moorby et al.
patent: 4505153 (1985-03-01), Lilley et al.

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