US 4,157,132 A · Lubricator

Abstract

The lubricator, according to the embodiment shown, comprises a lubricant storage chamber, which is connected between a lubricant supply line and lubricant discharge line, in which to receive a stored "charge" of lubricant. The chamber is evacuated by a plunger carried by a piston, the latter being operated by pneumatic pressure when the device to be lubricated is started up or turned "on". By way of example, the lubricator will supply a charge of lubricant to an air motor on motor start up; the plunger-operating piston is translated by a portion of the compressed air which is conducted to the air motor. A further piston-carried closure element is interposed in the lubricant discharge line to insure that, where the lubricant supply is under pressure, lubricant will not be conducted into the lubricant discharge line until the machine to be lubricated is started.

Claims15

Dependent claims

A lubricator, comprising:

first means, for communication with a source of lubricant, for conducting lubricant therealong, in a given direction, for lubricating an apparatus;
second means, movably interposed in said first, conducting means, for preventing lubricant flow counter-current to said given direction;
wherein
said second means includes third means, movable between a first positioning thereof, for closing off said conducting means to lubricant flow, and a second positioning thereof for opening said conducting means to lubricant flow;
said third means comprises a bearing surface reactively responsive to a pressured-fluid force to move said third means from one of said first and second positionings to the other of said postionings;
and
means coupled to said third means operative for supplying pressured lubricant to said bearing surface.

4 more elements

Dependencies are inferred from the claim text.

Lubricator

Life of this patent

Lubricator

Life of this patent

Abstract

Claims15