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Patent Searching and Data


Title:
TANDEM PUMP
Document Type and Number:
Japanese Patent JPH04265484
Kind Code:
A
Abstract:

PURPOSE: To prevent seizure by making the plate thickness of the first vane which is held by the first rotor, smaller than that of the second vane which is held by the second rotor.

CONSTITUTION: The plate thickness of the first vane 37 on the first rotor 35 side which generates discharge oil to be introduced between intermediate side plates 70 is made smaller than that of the second vane 38 on the second rotor 36 side so that the second vane 38 may always pop out earlier than the first vane 37 so as to generate a pumping action in the pump room where the second rotor 36 rotates, earlier than in the pump room where the first rotor 35 rotates. Therefore, in a low temperature, it is possible to prevent large deformation of the third plate 70c which faces the second rotor 36 toward the second rotor 36, and generate no clearance by excessive deflection, thus preventing seizure.


More Like This:
JPS6170192ROTARY COMPRESSOR
WO/2006/046027ROTARY VANE ENGINE
Inventors:
FUJIWARA EIJU
NARUSE MITSUNORI
Application Number:
JP2458591A
Publication Date:
September 21, 1992
Filing Date:
February 19, 1991
Export Citation:
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Assignee:
TOYODA MACHINE WORKS LTD
International Classes:
F01C21/08; F04C11/00; F04C15/00; (IPC1-7): F04C11/00; F04C15/00