One-main pipe type centralized lubrication apparatus

Lubrication – Systems – With measuring or metering value system

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Details

184 271, 184 32, 417 28, F16N 2700

Patent

active

051655020

ABSTRACT:
A one-main pipe type centralized lubrication apparatus having a pump device, one main oil feed pipe and a plurality of distributors, wherein the pump device is provided with a depressurization passage for opening a discharge passage connected to the main pipe into a tank and a depressurization valve. The direction of rotation of a motor for driving a pump element of the pump device is reversible so that the depressurization valve is operated in association with the motor and, when the motor normally rotates, the depressurization valve is controlled to be closed and, when the motor rotates in reverse, the depressurization valve is controlled to be open, thereby enabling forcible depressurization.

REFERENCES:
patent: 1950158 (1934-03-01), Barks
patent: 2766848 (1956-10-01), Bystricky et al.
patent: 3145803 (1964-08-01), Cobert
patent: 3317002 (1967-05-01), McKenzie
patent: 4143995 (1979-03-01), Divisi
patent: 4463559 (1984-08-01), Holdenried

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