Grease gun and pressure relief valve therefor

Details Grease gun and pressure relief valve therefor Grease gun and pressure relief valve therefor

1976-12-13

1977-12-20

Brown, David H.

Lubrication

Lubricators

Nipple or fitting

222397, 222507, 251340, F16N 312

Patent

active

040636186

ABSTRACT:
A flow control handle for supplying lubricant to a grease fitting. The handle includes a flow control valve interiorly thereof, a handle extension and a manual trigger for controlling the flow control valve. A pressure relief valve is operable to relieve high pressure grease in the handle extension. This valve is automatically closed and is opened by movement of the trigger in a direction opposite to that required to open the flow control valve whereby high pressure grease cannot enter the extension when the relief valve is open.

REFERENCES:
patent: 1628733 (1927-05-01), Morris
patent: 2520398 (1950-08-01), Hanks
patent: 2615598 (1952-10-01), Watkins et al.
patent: 2715512 (1955-08-01), Miller et al.
patent: 3788427 (1974-01-01), Fox et al.

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