Hydraulic impact hammer

Details Hydraulic impact hammer Hydraulic impact hammer

1994-01-25

1994-12-06

Smith, Scott A.

Tool driving or impacting

Impacting devices

With impact cushioning means

1731621, B25D 1724

Patent

active

053701933

ABSTRACT:
A hydraulic impact hammer comprises a protective casing, a hydraulically operated piston and a member for guiding the piston, and an impact member and a member for guiding the impact member. The piston-guiding member and the member guiding the impact member are made separate with respect to each other in order to prevent propagation of the tension wave reflected from the impact member. However, the piston-guiding member and the member guiding the impact member are each connected to the protective housing through at least one attenuating element.

REFERENCES:
patent: 1774905 (1930-09-01), Smrdel
patent: 2024684 (1935-12-01), Erfass
patent: 3168324 (1965-02-01), Kennell
patent: 3511127 (1970-05-01), Smith
patent: 4592431 (1986-06-01), Tornqvist
patent: 4681172 (1987-07-01), Mikiya et al.
patent: 4723610 (1988-02-01), Dummermuth et al.
patent: 4776408 (1988-10-01), Elkin et al.
patent: 5082067 (1992-01-01), Tornquist

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