Pneumatic percussion drill with exhaust cooling and...

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

B - Operations, Transporting

25

D

121/10

B25D 9/04 (2006.01) B25D 17/08 (2006.01) B25D 17/12 (2006.01) B25D 17/26 (2006.01)

Patent

CA 1112114

ABSTRACT OF THE DISCLOSURE 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. -9-

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