CPC F16N 13/06 (2013.01) [F04B 15/02 (2013.01); F04B 53/16 (2013.01); F16N 7/38 (2013.01); F16N 13/16 (2013.01); F16N 19/00 (2013.01); F16N 2013/063 (2013.01); F16N 2280/00 (2013.01)] | 19 Claims |
1. A lubricant pump for driving lubricant from a container to at least one lubricant distributor, the container having upper and lower ends and an interior storage cavity for retaining a quantity of lubricant, the pump comprising:
a housing mountable to the upper end of the container and having a vertically-extending, central bore, an outlet passage extending between the central bore and an outlet port fluidly connectable with the lubricant distributor, a vent chamber having an inlet and an outlet, a vent inlet passage extending between the central bore and the vent chamber inlet, and a vent outlet passage extending between the vent chamber outlet and a vent outlet port fluidly connectable with the container cavity; and
a movable valve element disposed within the vent chamber and displaceable along an axis between a first position in which the valve element obstructs at least one of the chamber inlet and the chamber outlet and a second position in which the chamber inlet is fluidly connected with the chamber outlet to provide an internal flow path from the central bore to the vent outlet port;
wherein the housing includes a monobloc providing the central bore, the outlet passage, the vent chamber, the vent inlet passage, and the vent outlet passage.
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