Auxiliary Lubrication Unit for Lubricant Introduction Devices

• US 20090288916A1
• Filed: 04/07/2006
• Published: 11/26/2009
• Est. Priority Date: 07/07/2005
• Status: Active Grant

• Current Assignee: Lincoln GmbH (Lincoln Holdings Enterprises, Inc.)
• Original Assignee: Lincoln GmbH (Lincoln Holdings Enterprises, Inc.)
• Inventors: Trinkel, Ralf
• Granted Patent: US 8,215,456 B2
• Time in Patent Office: Days
• US Class Current: 184/45.100
• CPC Class Codes: F16N 25/02 with reciprocating distributing slide valve
• CPC Class Codes: F16N 7/38 with a separate pump; Central lubrication systems

Abstract

The invention relates to an auxiliary lubrication unit for lubricant introduction devices. Said unit comprises a base body (2), in whose longitudinal bore (10) a control piston (6) is displaced axially by a spring (4) towards a seal (9) and also comprises lateral connections (1a, 1p) of a chamber (11) that is delimited by the control piston (6) in the longitudinal bore (10), said connections running from a lubricant pump and to an installation that is to be supplied with lubricant and allowing lubricant to be transported, in the sealing position of the control piston (6), through the chamber (11) from the lubricant pump the the installation. If the pump fails, the control piston (6) can be displaced by remains if auxiliary lubricant from its sealing position, in opposition to the action of the spring (4), into a position in which the connection (1a) to the installation is open and the connection (1p) to the lubricant pump is closed, enabling the installation to be filled with the auxiliary lubricant.

Claims

1. Auxiliary lubrication unit for lubricant introduction devices, said unit comprising a body, in whose longitudinal borehole a control piston is pressed by a spring so that it can move axially in the direction of a seal, with lateral connections of a chamber held open by the control piston in the longitudinal borehole from a lubricant pump and to an installation to be supplied with lubricant, so that in the sealed position of the control piston lubricant can be fed through the chamber from the lubricant pump to the installation, wherein, if the pump fails, the control piston can be moved out of its sealed position against the effect of the spring by means of auxiliary lubricant into a position in which the connection to the installation is opened and the connection to the lubricant pump is closed, so that the installation can be filled with auxiliary lubricant.

2. Auxiliary lubrication unit according to claim 1, characterized in that the lubrication piston has a reduced diameter portion defining said chamber for the lubricant return from the chamber to the lubricant pump when the control piston is displaced against the force of the spring.

3. Auxiliary lubrication unit according to claim 1 or 2, wherein the spring is held in a screw plug of the longitudinal borehole.

4. Auxiliary lubrication unit according to claim 3, further comprising a stop pin in the screw plug for the control piston.

5. Auxiliary lubrication unit according to claim 3, wherein in one end of the longitudinal borehole there is a filling screw with a lubricating nipple without a non-return valve.

6. Auxiliary lubrication unit according to claim 5, wherein the seal contacts the filling screw.

7. Auxiliary lubrication unit according to claim 6, wherein the connections are formed with straight, threaded pipe connections.

8. Auxiliary lubrication unit according to claim 1, wherein in one end of the longitudinal borehole there is a filling screw with a lubricating nipple without a non-return valve.

9. Auxiliary lubrication unit according to claim 1, wherein the connections are formed with straight, threaded pipe connections.