Drop tester capable of automatically and repeatedly carrying out

Details Drop tester capable of automatically and repeatedly carrying out Drop tester capable of automatically and repeatedly carrying out

1989-03-29

1990-03-27

Ruehl, Charles A.

Measuring and testing

Testing by impact or shock

Specimen impactor detail

G01N 334

Patent

active

049109952

ABSTRACT:
In a drop tester for repeatedly dropping an article from a predetermined height, the article is vertically suspended by a string which is guided through a guide member to a fixed support post. The string is reciprocally pulled by a drive member on a side of the fixed support post to hoist the article to the predetermined height and is thereafter released to drop the article. A detection member is located at the predetermined height to produce a detection signal when the article reaches the predetermined height. The drive member horizontally pulls the string within a predetermined distance with the string brought into contact with a retractable drive pin. The drive pin is retracted when the detection signal is produced by the member to release the string from the drive pin and to thereby drop the article.

REFERENCES:
patent: 2159036 (1939-05-01), McSwain

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