F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 25/04 (2006.01) F04B 25/00 (2006.01) F04B 37/14 (2006.01) F04B 39/04 (2006.01) F04B 39/12 (2006.01)
Patent
CA 2042288
A reciprocating vacuum pump characterized in that each sliding part of a crank moving portion and piston moving portions is made oilless, two pistons in the piston moving portions being formed so that their load working lines are aligned, a suction exhaust valve being provided on each of the two pistons. This pump may have a multistage structure in which two pistons extend in a horizontally opposed state. The reciprocating vacuum pump thus constructed is small in size and light in weight, and is substantially free from vibration.
Okuyama Nobuhisa
Shinoto Hiroshi
Mikuni Jukogyo Co. Ltd.
Smart & Biggar
Toyo Engineering Corporation
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