Pneumatic percussion tool having a vibration dampened handle

Details Pneumatic percussion tool having a vibration dampened handle Pneumatic percussion tool having a vibration dampened handle

1975-02-21

1976-07-13

Purser, Ernest R.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

173162, 267137, B25D 904

Patent

active

039688437

ABSTRACT:
A pneumatic hammer is provided with a handle which is isolated from the body of the tool so that vibrations of a reciprocating hammer are dampened. This is accomplished by a shock absorbing insert located between the handle and reciprocating hammer. The insert includes a rubber cushion member bonded to two steel coupling members, one of which is bolted to the handle and the other which is bolted to the body of the tool. An air passageway extends through the handle and cushion member to reciprocate the hammer. To protect the rubber from deterioration from the oil transported with the pressurized air, a neoprene liner is provided which extends through all of the members and which also as a flange at the remote face of each of the coupling members to provide sealing gaskets thereat.

REFERENCES:
patent: 2019964 (1935-11-01), Hamerly
patent: 2058583 (1936-10-01), Forss
patent: 2500036 (1950-03-01), Horvath
patent: 3542095 (1970-11-01), Frederickson

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