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

Claim 16:
17. 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;
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; and
a valve actuator configured to bias the valve element toward the first position, the housing further having an actuator chamber spaced axially from and connected with the vent chamber and sized to receive the actuator, the valve actuator being disposed within the actuator chamber.