Hammer drill or chipping hammer

Details Hammer drill or chipping hammer Hammer drill or chipping hammer

1982-06-02

1984-10-23

Yost, Frank T.

Tool driving or impacting

Including means to vibrationally isolate a drive means from...

173162H, 408143, B25D 1700

Patent

active

044782934

ABSTRACT:
A hammer drill or chipping hammer includes a housing, a striking mechanism movably displaceably mounted within the housing, and a handle spring supported on the housing. To absorb vibrations generated during operation of the drill or hammer, piston-like weighted members are slidably mounted in the housing for movement parallel to the axial direction of the striking mechanism. The weighted members are supported by springs. Each weighted member is located within a separate cylinder and divides the cylinder into separate spaces. The spaces in the cylinders are interconnected by a fluid medium communicating between them for effecting balanced operation of the weighted members.

REFERENCES:
patent: 1597245 (1926-08-01), Prellwitz
patent: 1711688 (1929-05-01), O'Farrell
patent: 2152427 (1939-03-01), Wolf
patent: 2400650 (1946-05-01), Leavell et al.
patent: 2875731 (1959-03-01), Settles et al.
patent: 3788804 (1974-01-01), Koudelka et al.

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