Impact device

Details Impact device Impact device

1987-09-09

1988-11-15

Yost, Frank T.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

91290, 91300, 91321, B25D 918

Patent

active

047842288

ABSTRACT:
An impact device that consists of a housing having a bore, a piston, and a change-over valve for control of the reciprocal movement of the piston is presented in the present invention. In the present invention, it is not necessary to employ a long-size piston and a high piston speed is obtained and, further, a compact device in which the fluctruation of the pressure in the low pressure path is small can be obtained.

REFERENCES:
patent: 4230019 (1980-10-01), Castan
patent: 4646854 (1987-03-01), Arndt et al.

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