John R Prybella
Engineers in Denver, CO
License number
Colorado 26780
Issued Date
Jan 24, 1990
Renew Date
Feb 1, 2000
Expiration Date
Feb 1, 2000
Type
Professional Engineer
Address
Address
12880 W M0Ntana Dr, Denver, CO 80228
Professional information
Condition Responsive Pump Control Utilizing Integrated, Commanded, And Sensed Flowrate Signals
US Patent:
4795314, Jan 3, 1989
Filed:
Aug 24, 1987
Appl. No.:
7/088685
Inventors:
John R. Prybella - Lakewood CO
Terry D. Boucher - Littleton CO
Terry D. Boucher - Littleton CO
Assignee:
Cobe Laboratories, Inc. - Lakewood CO
International Classification:
F04B 4906, A61M 3700, B04B 1300
US Classification:
417 43
Abstract:
A pump control apparatus including a variable speed pump controllable in response to a pump drive signal, a signal generator generating a commanded flowrate signal indicating desired flowrate of the pump, a flowrate sensor providing a sensed flowrate signal indicating sensed flowrate of the pump, and an integrator connected to the sensor and generator to receive and integrate the commanded flowrate signal and the sensed flowrate signal and to provide the pump drive signal based on the difference in integrated values of the signals so as to achieve desired commanded volume over time.