Pneumatic percussion drill with exhaust cooling and lubrication

Details Pneumatic percussion drill with exhaust cooling and lubrication Pneumatic percussion drill with exhaust cooling and lubrication

1979-02-08

1981-01-06

Schroeder, Werner H.

Tool driving or impacting

Impacting devices

With means for rotating tool

173 76, 173DIG2, 181230, B25D 1500, B25D 1722

Patent

active

042431107

ABSTRACT:
A pneumatic percussion rock drill includes a muffler casing surrounding the drill cylinder part and sealingly engaged with the drill housing so that exhaust air from the percussion motor flows forward through ports in a forward housing member into a chamber containing the drill chuck, the chuck rotation gearing, and the drill stem shank. Exhaust air is used to cool and lubricate the chuck parts before exiting from the drill onto the feed mechanism located below the drill housing.

REFERENCES:
patent: 2452268 (1948-10-01), Schumann
patent: 3376939 (1968-04-01), Holzapfel
patent: 3635299 (1972-01-01), Hayes
patent: 3785248 (1974-01-01), Bailey

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