Tool driving or impacting – Impacting devices – Impact transmitting anvil
Patent
1991-10-09
1993-02-23
Rosenbaum, Mark
Tool driving or impacting
Impacting devices
Impact transmitting anvil
173132, B25D 100, B25D 102
Patent
active
051881870
ABSTRACT:
The present invention comprises an electrical grounding rod driving tool for use with an externally powered hammer comprising a shaft portion for insertion into a tool receiving chuck of the hammer and a base portion extending outwardly from said shaft portion which receives and retains the end of a grounding rod to which the powered hammer is applied. The base portion comprising an inwardly extending elongated tapering bore from the exterior end of said base portion which bore is identified as a conical bore, the interior terminus of said bore being truncated and terminating in a concave cap, the outer circumference of which is in tangential relationship with the walls of said inwardly extending conical bore. The diameter of said bore at said exterior is greater than the original exterior diameter of the rod to be driven, the diameter of said bore at the truncated terminus being less than the original diameter of said rod. The bore in the base portion having an inwardly extending length of approximately one-half the length of the base portion of the tool.
REFERENCES:
patent: D261098 (1981-10-01), Hendon et al.
patent: 2147829 (1939-02-01), Daniels
patent: 4315551 (1982-02-01), Iannone
patent: 4460050 (1984-07-01), Schmidt
patent: 4557409 (1985-12-01), Hecock et al.
E & J Demark, Inc.
Husar John M.
Rosenbaum Mark
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