Patent ID: 11859762
Assignee: LINCOLN INDUSTRIES, INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 18:
19. 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 an inlet at 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 an inlet at the central bore and the vent chamber inlet, the inlet of the vent inlet passage being separate from the inlet of the outlet passage such that the vent inlet passage is fluidly distinct from the outlet passage, 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.