Title:
【発明の名称】歯車ポンプ
Document Type and Number:
Japanese Patent JPS63501971
Kind Code:
A
Abstract:
A gear pump which includes a pair of intermeshing gears. A housing defines a pumping chamber having peripheral walls surrounding and in sealing contact with the circumference of the gears between an inlet port and a discharge port. Bearing walls are adapted to engage adjacent side faces of the gears in substantially sealing relation. Grooves are provided in the bearing walls for progressively admitting pressure to the gear teeth as the gear teeth move toward the discharge port. The grooves are acruately shaped and diverge toward the discharge port from a point intermediate the inlet and discharge ports and allow compressed air in the liquid to be gradually displaced by liquid under pressure from the pump discharge.
Inventors:
Earlestad, Jerome Kay
Application Number:
JP50030686A
Publication Date:
August 04, 1988
Filing Date:
December 10, 1986
Export Citation:
Assignee:
Sandstrand Collection
International Classes:
F04C2/18; F04C2/08; (IPC1-7): F04C2/18
Attorney, Agent or Firm:
Michiteru Soga