GEAR PUMP OR MOTOR - SHIMADZU CORP

Title:

GEAR PUMP OR MOTOR

Document Type and Number:

Japanese Patent JP2000205145

Kind Code:

A

Abstract:

To reduce pulsation and noises by lessening the backlash of a gear pump or a motor.

Because the surface hardness of teeth 61 of a follower gear 6 is made higher than the hardness of teeth 51 of a driving gear 5, those surfaces of the teeth 51 of driving gear 5 to serve meshing are worn by the teeth 61 of the follower gear 6, to cause its shift toward the driving gear 5, which accomplishes non-backlash operation. No unreasonable pressing force acts on the meshing parts, and there is no risk that a large frictional force is generated, which allows avoiding the drop of the torque efficiency.

Inventors:

SUGANO TADASHI
SERA YASUSHI
KOMATSU KOJI
NISHIGUCHI HIROMI
MUKAI NOBUO

Application Number:

JP454499A

Publication Date:

July 25, 2000

Filing Date:

January 11, 1999

Export Citation:

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Assignee:

SHIMADZU CORP

International Classes:

F04C2/18; F03C2/08; (IPC1-7): F04C2/18; F03C2/08

Attorney, Agent or Firm:

Kazuhiro Akazawa

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