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Title:
INTERNAL TOOTH GEAR PUMP
Document Type and Number:
Japanese Patent JPH06272672
Kind Code:
A
Abstract:

PURPOSE: To keep a tooth form theoretically free from abrasion, even when liquid having a wide range of viscosity is handled at high speed rotation and pressure.

CONSTITUTION: A driven internal tooth gear 4 having external surface rotatably supported on a casing 1 is made to have whole addendum tooth forms 4a, and the tooth forms 3a of an external tooth drive gear 3 are kept in contact with the tooth forms 4a only at projection points 9 for the reduction of torque acting on the gear 4 due to liquid pressure to zero, thereby keeping a tooth form theoretically free from abrasion.


Inventors:
HOTTA KOJI
Application Number:
JP1993000085302
Publication Date:
September 27, 1994
Filing Date:
March 19, 1993
Export Citation:
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Assignee:
OVAL CORP
International Classes:
F04C2/10; F04C2/08; F04C13/00; (IPC1-7): F04C2/10
Attorney, Agent or Firm:
高野 明近 (外1名)



 
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