Agitating – Having interrelated feed and discharge means – Including means to monitor or control operation
Patent
1991-06-12
1993-11-16
Hornsby, Harvey C.
Agitating
Having interrelated feed and discharge means
Including means to monitor or control operation
366134, 366137, 366159, 366177, 366142, 422133, B01F 1502
Patent
active
052617416
ABSTRACT:
Malfunctions of plunger (15) in the mixhead (10) of a system for mixing a plurality of fluids such as polyol and isocyanate for the manufacture of polyurethane foam, which plunger induces variations in fluid pressures as the mixhead operates, are monitored by a method that includes the steps of measuring the upstream pressure of at least one fluid and generating a signal responsive thereto, and comparing the pressure responsive signal to a preselected pressure responsive signal and generating an alarm if the pressure responsive signal comparison falls outside preselected limits. A device for implementing such a method includes transducers (40, 41) for measuring the pressure of at least one fluid and generating a signal responsive thereto, an alarm (44) for generating a malfunction alarm, and a circuit (43) for receiving the pressure responsive signal and comparing the pressure responsive signal to a preselected pressure responsive signal and generating an alarm signal if the pressure responsive signal comparison falls outside preselected limits.
REFERENCES:
patent: 2724581 (1955-11-01), Pahl et al.
patent: 3050003 (1962-08-01), Edwards
patent: 3223068 (1965-12-01), Van Winkle
patent: 3702619 (1972-11-01), Son
patent: 3730297 (1973-05-01), Colgan et al.
patent: 3750134 (1973-07-01), Weisend
patent: 3901178 (1975-08-01), Bermel
patent: 3999686 (1976-12-01), Kato
patent: 4090695 (1978-05-01), Stone et al.
patent: 4430886 (1984-02-01), Rood
patent: 4440314 (1984-04-01), Vetter et al.
patent: 4592657 (1986-06-01), Taubenmann
patent: 4613059 (1986-09-01), Merkel
patent: 4668948 (1987-05-01), Merkel
patent: 4695433 (1987-09-01), Scrivo et al.
patent: 4800367 (1989-01-01), Klintenstedt et al.
patent: 4835701 (1989-05-01), Ohiwa et al.
patent: 4854713 (1989-08-01), Soechtig
patent: 4944599 (1990-07-01), Soechtig
patent: 4976546 (1990-12-01), Beattie
List of U.S. Patents Assigned to Nordson Corporation.
Alexander Reginald L.
Hornsby Harvey C.
The Dow Chemical Company
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