Measuring and testing – Inspecting
Patent
1997-02-04
1997-12-30
Dougherty, Elizabeth L.
Measuring and testing
Inspecting
73826, 73827, G01D 100
Patent
active
057033021
ABSTRACT:
A device for testing the holding force of fastening elements secured in a base material includes an axially extending load application member (5) engageable within an axially extending impact member so that the impact member can be displaceable axially relative to the load application member. The load application member (1) has a coupling region (3) at a front end and a stop surface (4) spaced axially from the coupling region and facing towards the first end of the load application member. The impact member (2) has a central passageway in which at least part of the load application member is displaceable. The impact member (2) has a first stop surface (6) facing a second end of the impact member (2). The coupling region is substantially cylindrically shaped and has projections (14) which extend radially outwardly from the outside surface of the coupling region. The projections (14) can be deflected elastically.
REFERENCES:
patent: 2447992 (1948-08-01), Turek
patent: 2560109 (1951-06-01), Hines
patent: 3224722 (1965-12-01), Flick
patent: 4717107 (1988-01-01), Servadio
patent: 5583288 (1996-12-01), Brenner et al.
Hasler Roland
Miescher Stefan
Biegel Ronald L.
Dougherty Elizabeth L.
Hilti Aktiengesellschaft
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