B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/151
B23P 15/00 (2006.01) F01C 21/08 (2006.01)
Patent
CA 1227019
ABSTRACT OF THE DISCLOSURE A method of forming a rotor for a vane-type rotary pump. The rotor is generally cylindrical with a plurality of vane slots. A tubular member having generally flat sections separated one from the other by corner portions is formed into the rotor by forming the flat sections into slots by deforming the tubular member. The slots are thereafter formed into the vane slots with a die and the corner portions are formed into the outer peripher- al surface of the rotor, also using a die.
458897
Horikoshi Yukio
Sakamaki Hiroshi
Sugishita Susumu
Nippon Piston Ring Co. Ltd.
Riches Mckenzie & Herbert Llp
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