Measuring and testing – Testing by impact or shock – Specimen impactor detail
Patent
1997-07-22
1999-07-27
Felber, Joseph L.
Measuring and testing
Testing by impact or shock
Specimen impactor detail
73 82, G01N 340
Patent
active
059293160
ABSTRACT:
An air hammer type impact tester including a machine base having a pressure accumulation chamber with an air inlet, a straight tube vertically suspending in the pressure accumulation chamber, a test platform mounted on the machine base and having a replaceable buffer block adapted to support the sample to be tested, a hammer block moved in the straight tube to strike the buffer block against the test sample, an air pump operated to pump air into the pressure accumulation chamber, a diaphragm moved between the bottom end of the straight tube and the air inlet of the pressure accumulation chamber, the diaphragm being forced upwards by compressed air to close the bottom end of the straight tube when compressed air is pumped from the air pump into the pressure accumulation chamber, the diaphragm being forced downwardly away from the bottom end of the straight tube by air pressure when the inside pressure of the pressure accumulation chamber surpasses a predetermined value, permitting the inside pressure of the pressure accumulation chamber to pass into the straight tube and to force the hammer block upwardly against the buffer block, and a valve connected between the air pump and the air inlet of the pressure accumulation chamber to control the passage of the air inlet of the pressure accumulation chamber.
REFERENCES:
patent: 2474235 (1949-06-01), Dresser et al.
patent: 3352143 (1967-11-01), Bollar
Felber Joseph L.
King Design Industrial Co., Ltd.
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