Linear motor having a magnetically biased neutral position

Motors: expansible chamber type – With motive fluid valve – Electrically operated

Reexamination Certificate

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C137S625640, C335S220000

Reexamination Certificate

active

11144713

ABSTRACT:
A linear motor is provided including a stator having at least one electromagnetic coil and a rotor having at least one permanent magnet. The rotor is movable toward at least a first position when least one electromagnetic coil is energized and solely magnetically biased to a neutral position when the at least one electromagnetic coil is de-energized.

REFERENCES:
patent: 2702841 (1955-02-01), Bernstein
patent: 4363980 (1982-12-01), Petersen
patent: 4593719 (1986-06-01), Leonard
patent: 4605197 (1986-08-01), Casey et al.
patent: 4612845 (1986-09-01), Burkel et al.
patent: 4870306 (1989-09-01), Petersen
patent: 4987927 (1991-01-01), Kluczynski
patent: 5249603 (1993-10-01), Byers, Jr.
patent: 5264813 (1993-11-01), Byers, Jr.
patent: 5434549 (1995-07-01), Hirabayashi et al.
patent: 5605178 (1997-02-01), Jennins
patent: 5722460 (1998-03-01), Olsen et al.
patent: 5732678 (1998-03-01), Lindquist et al.
patent: 5787915 (1998-08-01), Byers et al.
patent: 5921279 (1999-07-01), Barber
patent: 6040752 (2000-03-01), Fisher
patent: 6105616 (2000-08-01), Sturman et al.
patent: 6334604 (2002-01-01), Roth
patent: 6473928 (2002-11-01), Veloskey et al.
patent: 6501357 (2002-12-01), Petro
patent: 6526864 (2003-03-01), Lindler et al.
patent: 6615868 (2003-09-01), Ueki
patent: 2002/0008601 (2002-01-01), Hisashi et al.
patent: 774 091 (1997-05-01), None
patent: 1045116 (2000-10-01), None
patent: 1 340 887 (2003-09-01), None
patent: 1 429 035 (2004-06-01), None
patent: 1 324 456 (1973-07-01), None
patent: 9-133106 (1997-05-01), None
patent: 9-133107 (1997-05-01), None
patent: 10-103304 (1998-04-01), None
patent: WO 94/05939 (1994-03-01), None
patent: WO 2005/086326 (2005-09-01), None
English language abstract of JP 9-133106 dated May 20, 1997.
English language abstract of JP 9-133107 dated May 20, 1997.
English language abstract of 10-103304 dated Apr. 21, 1998.
Reitz, V., editor, “Dissecting high-performance electrohydraulic valves”, Machine Design, Apr. 2001.
Schneider, R.T., editor, “The hazy line between servo and proportional valves”, Hydraulics & Penumatics, pp. 34-35, Dec. 2001.
D'Amore, M., “Linear-force motors enhance proportional valves”, Hydraulics & Pneumatics, pp. 14, 16, Jul. 1998.
Jones, J.C., “Developments in Design of Electrohydraulic Control Valves From Their Initial Design Concept to Present Day Design and Applications”, pp. 1-19, Workshop on Proportional and Servovalves, Monash University, Melbourne, Australia, Nov. 1997.
Kenjo, T., “Electronic Motors and Their Controls”, Oxford Science Publications, 1991.
Moog, W.C., “Electrohydraulic Valves . . . A Technical Look”, Moog, no date.
Moog, W.C., “D633 and D634 Series Direct Drive Servo-Proportional Control Valves with Integrated 24 V Electronics ISO 4401 Size 03 and 05”, MOOG, no date.
Moog, W.C., “D634-P Series Direct Drive Proportional Valve with Integrated 24 V Electronics ISO 4401 Size 05”, MOOG, no date.
MOOG, W.C., “Servovalves and Servo-Proportional Valves Product Line Overview”, MOOG, no date.
Patent Abstracts of JA vol. 1999 #3 of Mar. 31, 1999 & JP 10 329926 of Dec. 15, 1998 Sumitomo Special Metals Co., Ltd.
Patent Abstracts of JA vol. 2000 #12 of Jan. 3, 2001 & JP 2000 253640 of Sep. 14, 2000 Sanyo Electric Co., Ltd.

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