Manually operable tool for drilling and/or removing material in

Details Manually operable tool for drilling and/or removing material in Manually operable tool for drilling and/or removing material in

1996-03-25

1998-09-15

Smith, Scott A.

Tool driving or impacting

Impacting devices

Hammer head driven by relatively moving motion transmitting...

173 11, 173128, 173201, 173217, B25D 1600

Patent

active

058066098

ABSTRACT:
A manually operable tool, such as a hammer drill, for drilling and/or removing material in at least one of brittle material and low ductile material, has a continuously rotatable chuck (8) and a motor driven striking mechanism (1) for transmitting impulse-like blows to a tool bit (9) held in the chuck (8). The tool includes members (5) for transmitting impulse-like blows composed of superimposed axially-directed blows and torsional blows to the tool bit (9) in the chuck for forming drilling blows. Further, an adaptor can be provided for attachment to the hammer drill containing the members (5) for affording the superimposed blows.

REFERENCES:
patent: 3114421 (1963-12-01), McCloud
patent: 3269466 (1966-08-01), Mitchell
patent: 3430709 (1969-03-01), Miller
patent: 3685594 (1972-08-01), Koehler
patent: 4567951 (1986-02-01), Fehrle et al.
patent: 4895212 (1990-01-01), Wache
patent: 5277259 (1994-01-01), Schmid et al.

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