1
Halbert Fischel, Robert L Anderson: Low leakage current medical instrument. Halbert Fischel, Fraser and Bogucki, May 22, 1979: US04155852 (49 worldwide citation)

A medical instrument, specifically shown as a dialysis machine, incorporates an electrically isolated and hermetically sealed high thermal flux heater in conjunction with means for vectorially cancelling alternating current signal components generated in the operation of the machine. Because of elec ...


2
Robert L Anderson: Liquid degasifier system and method. Halbert Fischel, Fraser and Bogucki, August 16, 1977: US04042351 (9 worldwide citation)

A system for continuously removing gases from a liquid initially subjects the liquid to a pressure drop and then injects the liquid into a toroidal chamber in which it is impelled into a hollow annular flow path of high surface area and velocity. The liquid is forced helically about the annulus to c ...


3
Robert L Anderson: Conductivity cell. Halbert Fischel, Fraser and Bogucki, July 12, 1977: US04035719 (6 worldwide citation)

The conductivity of an electrolytic solution is determined with accuracy and sensitivity by measuring the conductance along extended paths of small cross-sectional areas between large area electrodes. Current flow is thereby measured with minimization of distortion effects created by electrolytic de ...


4
Robert L Anderson: Proportioning pumping system for dialysis machines. Halbert Fischel, Fraser and Bogucki, November 23, 1982: US04360323 (5 worldwide citation)

A compact and highly reliable proportioning pumping system for supplying a precise and controllable mixture of concentrate and water in a kidney dialysis machine comprises a central body and a pair of oppositely mounted pivotable linkages coupled to the body. A first pivotable linkage is coupled by ...


5