Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Reexamination Certificate
2008-07-29
2008-07-29
Sherry, Michael J (Department: 2836)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
C324S418000, C324S422000, C324S423000, C324S546000
Reexamination Certificate
active
07405917
ABSTRACT:
The present invention provides a method and apparatus for determining the functional status of an electromagnetic valve having a solenoid and plunger including determining the electro-mechanical switching time of a valve based on characteristics of an electrical characteristic responsive to the solenoid; comparing the valve electro-mechanical switching time to a predetermined value; and generating a valve status signal dependant on the results of the comparison.
REFERENCES:
patent: 2828068 (1958-03-01), Sperry
patent: 4734869 (1988-03-01), Mickowski
patent: 4856278 (1989-08-01), Widmann et al.
patent: 4862385 (1989-08-01), Fujita et al.
patent: 4873606 (1989-10-01), Pannier
patent: 4976144 (1990-12-01), Fitzgerald
patent: 4985857 (1991-01-01), Bajpai et al.
patent: 5067099 (1991-11-01), McCown et al.
patent: 5081599 (1992-01-01), Saito
patent: 5153522 (1992-10-01), Sano
patent: 5197439 (1993-03-01), Gronenberg et al.
patent: 5218968 (1993-06-01), Apple et al.
patent: RE34559 (1994-03-01), Mickowski
patent: 5329465 (1994-07-01), Arcella et al.
patent: 5343737 (1994-09-01), Baumoel
patent: 5453944 (1995-09-01), Baumoel
patent: 5471400 (1995-11-01), Smalley et al.
patent: 5477149 (1995-12-01), Spencer et al.
patent: 5493512 (1996-02-01), Peube et al.
patent: 5550498 (1996-08-01), Kwan et al.
patent: 5594663 (1997-01-01), Messaros et al.
patent: 5608845 (1997-03-01), Ohtsuka et al.
patent: 5628229 (1997-05-01), Krone et al.
patent: 5642278 (1997-06-01), Wang et al.
patent: 5801964 (1998-09-01), McCarthy
patent: 5893047 (1999-04-01), Gimblett et al.
patent: 6131609 (2000-10-01), Metso et al.
patent: 6246972 (2001-06-01), Klimasauskas
patent: 6282463 (2001-08-01), Oneyama et al.
patent: 6292757 (2001-09-01), Flanagan et al.
patent: 6308138 (2001-10-01), Jones et al.
patent: 6405108 (2002-06-01), Patel et al.
patent: 6425247 (2002-07-01), Schmid
patent: 6542853 (2003-04-01), Murakami et al.
patent: 6678584 (2004-01-01), Junk et al.
patent: 6711507 (2004-03-01), Koshinaka et al.
patent: 6847854 (2005-01-01), Discenzo
patent: 6874480 (2005-04-01), Ismailov
patent: 7031850 (2006-04-01), Kambli et al.
patent: 2003/0125841 (2003-07-01), Schlosser
patent: 2005/0043923 (2005-02-01), Forster et al.
patent: 100 52 664 (2002-05-01), None
patent: 0534 506 (1993-03-01), None
patent: 0 587 902 (1994-03-01), None
patent: 0 850 363 (1998-07-01), None
patent: WO 95/19589 (1995-07-01), None
patent: WO98/02664 (1998-01-01), None
Ahrens Oliver
Forster Karl-Heinz
Missal Wjatscheslaw
Szenn Otto
Festo AG & Co.
Hoffmann & Baron , LLP
Mai Tien
Sherry Michael J
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