Wiper assembly for a pump
AssigneeWeatherford/Lamb, Inc.
InventorJohn Edward Stachowiak, JR.
Life of this patent
Estimating the term…
Abstract
A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.
Claims23
A wiper assembly for a pump having an operating member, comprising:
- a housing for receiving the operating member;
- and
- a wiper member disposed in the housing and forced into engagement with the operating member to prevent debris from entering into an operating region of the pump.
A pump assembly, comprising:
- a pump having an operating member axially movable within a housing;
- and
- a wiper assembly having a wiper member forced into engagement with the operating member to prevent debris from entering into the housing.
Dependencies are inferred from the claim text.