Title:
OIL PUMP AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JPH04350373
Kind Code:
A
Abstract:
PURPOSE: To make the whole pump lightweight while preventing inconvenience such as oil leak.
CONSTITUTION: A liner 4 made of material with a thermal expansion coefficient approximately equal to that of rotors 1, 2 is interposed in the state of being fitted with play to a housing 3. A collar part 43 is formed at the opening side end part of the liner 4, and a step part 303, into which the collar part 43 is fitted, is formed at housing 3. The thickness measure t2 of this collar part 43 is set larger than the depth measure t1 of the step part 303, and the collar part 43 is pressed to the step part 303 by a cover 5.
Inventors:
KUBO TATSURO
SAGARA MASAO
SAGARA MASAO
Application Number:
JP12597191A
Publication Date:
December 04, 1992
Filing Date:
May 29, 1991
Export Citation:
Assignee:
TOYO A TEC KK
International Classes:
F04C2/10; F04C2/18; (IPC1-7): F04C2/10
Attorney, Agent or Firm:
Etsushi Kotani (2 outside)