Impact tool assembly with bit isolating means

Details Impact tool assembly with bit isolating means Impact tool assembly with bit isolating means

1984-02-15

1986-09-30

Kazenske, E. R.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

173133, B23B 4516

Patent

active

046142410

ABSTRACT:
A foot assembly for an impact tool reduces tool bit rebound shock to the operator and minimizes tool bit bouncing on the work surface by isolating and attenuating energy reflected from the work surface through the tool bit. The unique system comprises a collar support fabricated from a tough elastomeric material, which engages the inserted inner end of the tool bit and is maintained firmly against the collar thereof by a coil spring. Mounted inwardly within the longitudinal passageway of the foot assembly housing is a bushing, which has an outer contact surface against which the collar support will be thrust by the inwardly moving bit, the elastomeric material thereby serving to attentuate the rebound energy.

REFERENCES:
patent: 1470622 (1923-10-01), Jimerson
patent: 1481641 (1929-01-01), Jimerson
patent: 1774905 (1930-09-01), Smrdel
patent: 2185471 (1940-01-01), Mall
patent: 2239090 (1941-04-01), Everett
patent: 2685274 (1954-08-01), Liddicoat
patent: 3179185 (1965-04-01), O'Farrell
patent: 3244241 (1966-04-01), Ferwerda
patent: 3266581 (1966-08-01), Cooley et al.
patent: 4133394 (1979-01-01), Wohlwend
patent: 4168751 (1979-09-01), Deike

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