Pneumatic impact tool

Details Pneumatic impact tool Pneumatic impact tool

1987-03-17

1988-10-11

Kazenske, E. R.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

1731621, 92 85A, 92 85B, B25D 1700

Patent

active

047764082

ABSTRACT:
A pneumatic impact tool having a special cushioning assembly for cushioning the repeated recoil of a hammer piston and thereby providing substantially reduced tool vibration during use. The cushioning assembly includes an energy-dissipating damping sub-assembly and an energy-storing coil spring sub-assembly arranged in series with each other such that they operate simultaneously, yet independently, to cushion the hammer piston's rearward movement over a wide range of operating speeds.

REFERENCES:
patent: 2888679 (1959-06-01), Peterssen et al.
patent: 2899934 (1959-08-01), Salengro
patent: 3727700 (1973-04-01), Amtsberg
patent: 3788404 (1974-01-01), Koudelka et al.
patent: 3920086 (1975-11-01), Goppen et al.
patent: 4237987 (1980-12-01), Sherman
patent: 4308926 (1982-01-01), Montabert
patent: 4388972 (1983-06-01), Gidlund

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