Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
INTERNAL GEAR PUMP
Document Type and Number:
WIPO Patent Application WO/2016/056295
Kind Code:
A1
Abstract:
Provided is an internal gear pump. The shape of any one of a plurality of external teeth and a plurality of internal teeth of the pump is formed on the basis of formulae (1)-(5). Formula (1): r=ro-dr∙cosθ. Formula (2): Px=(ro-dr)+1/4dr{1-cos(2θ)}. Formula (3): Py=1/4dr{-2θ+sin(2θ)}. Formula (4): Qx=Px-r∙cosθ. Formula (5): Qy=Py+r∙sinθ.

Inventors:
WATANABE, Noritaka (45, Aza-Kaizan, Hatchi-cho, Okazaki-sh, Aichi 92, 〒4443592, JP)
Application Number:
JP2015/072134
Publication Date:
April 14, 2016
Filing Date:
August 04, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOYOOKI KOGYO CO., LTD. (45 Aza-Kaizan, Hatchi-cho Okazaki-sh, Aichi 92, 〒4443592, JP)
International Classes:
F04C2/10; F04C15/00
Domestic Patent References:
WO2013108553A12013-07-25
Foreign References:
JP2013100762A2013-05-23
JP2013227871A2013-11-07
JPS61201892A1986-09-06
Other References:
See also references of EP 3205881A4
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (Meishin Bldg, 20-19 Nishiki 1-chome, Naka-ku, Nagoya-sh, Aichi 03, 〒4600003, JP)
Download PDF: