Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Reexamination Certificate
2006-04-25
2006-04-25
Yu, Justine R. (Department: 3751)
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
C137S554000, C137S556000, C137S614180, C251S284000
Reexamination Certificate
active
07032878
ABSTRACT:
A method for the control of the switching operation of a valve by the fact that the two end positions and the intermediate position(s) of the valve are clearly determined each by the valve rod(s) bearing directly or indirectly on fixed position limiters, the fixed position limiters each are moved to in the course of the first switching operations of the valve, and the respective fixed position messages resulting therefrom are stored.
REFERENCES:
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patent: 5771926 (1998-06-01), Medal et al.
patent: 6360773 (2002-03-01), Rhodes
patent: 2 194 648 (1988-03-01), None
patent: 90/15948 (1990-12-01), None
patent: 96/10731 (1996-04-01), None
Journal dei Jan.-Feb. 2001, p. 14.
Journal Cit/plus/Apr. 2001, pp. 42 through 46.
Journal Brauwelt No. 46/47 (2000), pp. 2018 through 2023.
Coura Herbert
Gesikiewicz Martin
Porath Bernd
deVore Peter
Tuchenhagen GmbH
Vidas Arrett & Steinkraus P.A.
Yu Justine R.
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