Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2011-08-30
2011-08-30
Freay, Charles G (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
C417S417000, C417S401000, C417S404000, C417S534000
Reexamination Certificate
active
08007256
ABSTRACT:
An electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, resists a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets facing each other, and permanent magnets disposed in a space between the opposed electromagnets and held by a movable member. When an alternating current is applied to coils formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston of a first piston-cylinder assembly, while the other end is connected to a piston of a second piston-cylinder assembly. The first and second piston-cylinder assemblies are arranged such that an axis line of the first piston-cylinder assembly and an axis line of the second piston-cylinder assembly are non-coaxial and vertically offset from an axis of the movable member.
REFERENCES:
patent: 3936245 (1976-02-01), Hilgert
patent: 4538964 (1985-09-01), Brown
patent: 4854833 (1989-08-01), Kikuchi et al.
patent: 4867656 (1989-09-01), Hirose
patent: 5011379 (1991-04-01), Hashimoto
patent: 6326706 (2001-12-01), Zhang
patent: 6540491 (2003-04-01), Tanabe
patent: 6572348 (2003-06-01), Sakurai et al.
patent: 7665510 (2010-02-01), Nara et al.
patent: 2001/0051099 (2001-12-01), Yatsuzuka et al.
patent: 2241287 (1991-08-01), None
patent: 52-141607 (1977-10-01), None
patent: 57-30984 (1982-07-01), None
patent: 62-116185 (1987-07-01), None
patent: 63-63586 (1988-04-01), None
patent: 3-104188 (1991-10-01), None
patent: 10-169550 (1998-06-01), None
patent: 2002-213354 (2002-07-01), None
patent: 2003-056466 (2003-02-01), None
Supplementary European Search Report issued Apr. 14, 2011 in corresponding European Application No. 06768060.3.
Hirose Fuminori
Ishibashi Shigemitsu
Nakao Haruki
Bobish Christopher
Freay Charles G
Nitto Kohki Co. Ltd.
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
Electromagnetic reciprocating fluid device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electromagnetic reciprocating fluid device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic reciprocating fluid device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2668021