Dispensing – Automatic control – Constant weight – volume or pressure control by output
Reexamination Certificate
2011-06-28
2011-06-28
Shaver, Kevin P (Department: 3754)
Dispensing
Automatic control
Constant weight, volume or pressure control by output
C222S001000, C222S063000, C901S043000
Reexamination Certificate
active
07967168
ABSTRACT:
A dosing apparatus includes a feed device for a liquid or pasty medium, which supplies the medium at a given preliminary pressure. A pressure control valve communicates with the feed device, a dosing pump is fluidically connected to the pressure control valve, a driving motor that drives the dosing pump, a discharge valve discharges the medium as a volume flow modifiable over time. A control and regulation device feeds a control signal to the pressure control valve in accordance with a predefined setpoint volume flow value. A comparator of the control and regulation device compares the input and output pressure values, and a control unit modifies the control signal fed to the pressure control valve in order to drive the difference between the input and output pressure values to a given value.
REFERENCES:
patent: 5046666 (1991-09-01), Ono
patent: 5319568 (1994-06-01), Bezaire
patent: 5376062 (1994-12-01), Zeichner
patent: 5429682 (1995-07-01), Harlow et al.
patent: 5521477 (1996-05-01), Sasaki
patent: 5658615 (1997-08-01), Hasebe et al.
patent: 6015066 (2000-01-01), Kimura et al.
patent: 6056998 (2000-05-01), Fujimoto
patent: 6089469 (2000-07-01), Fusama et al.
patent: 6256597 (2001-07-01), Wang et al.
patent: 6283461 (2001-09-01), Joshi et al.
patent: 6540104 (2003-04-01), Yanagita et al.
patent: 7066352 (2006-06-01), Ono et al.
patent: 4123219 (1993-01-01), None
patent: 4318844 (1994-12-01), None
patent: 29606710 (1996-06-01), None
patent: 69814710 (2004-03-01), None
patent: 69814532 (2004-04-01), None
patent: 102004010774 (2004-09-01), None
patent: 0116879 (1984-08-01), None
patent: 2185785 (1987-07-01), None
International Search Report, dated Mar. 29, 2007.
German Patent and Trademark Search Report, dated Aug. 25, 2006.
Ehrle Klaus
Geier Daniel
Greenberg Laurence A.
Hilger u. Kern GmbH
Locher Ralph E.
Shaver Kevin P
Stemer Werner H.
LandOfFree
Process for controlling a dosing device for liquid or pasty... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for controlling a dosing device for liquid or pasty..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for controlling a dosing device for liquid or pasty... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2688816