Low pressure system lubrication for a jackhammer

Details Low pressure system lubrication for a jackhammer Low pressure system lubrication for a jackhammer

1992-09-21

1994-03-15

Denion, Thomas E.

Lubrication

Systems

Machine tools

184 74, 184 551, 173 71, 173 78, 173DIG3, F01M 900

Patent

active

052939596

ABSTRACT:
A percussive, fluid-activated jackhammer includes a low pressure lubrication system having a liquid lubrication reservoir chamber formed in a bore of the jackhammer, the lubrication chamber being subject to low percussive fluid pressure in a front piston chamber but not to high percussive fluid pressure in a drive or return chamber of the device. An inlet passageway is provided for adding lubricant to the lubricant chamber. An outlet passageway is provided, with a metering device therein, for flow of lubricant into the bore of the device during reciprocation of a piston in the bore.

REFERENCES:
patent: 1248966 (1917-12-01), Wilhelm
patent: 1574016 (1926-02-01), Bayles
patent: 1778937 (1930-10-01), Gartin
patent: 1968901 (1934-08-01), Nell
patent: 2318063 (1943-05-01), Davey et al.
patent: 2784701 (1957-03-01), O'Farrell
patent: 3977496 (1976-08-01), Black

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