Robert A Poland

US Patent:

40009726, Jan 4, 1977

Filed:

Jan 16, 1976

Appl. No.:

5/649648

Inventors:

Walter Jacob Braun - Englewood CO
John Henry Altshuler - Englewood CO
Gerald Lance Schlatter - Boulder CO
Robert LeRoy Poland - Boulder CO

Assignee:

Hemotec, Inc. - Englewood CA

International Classification:

G01N 3316

US Classification:

23230B

Abstract:

A system for determining the coagulation time of blood and components thereof, the amount of anticoagulant to be injected before and during surgery, and the amount of additive required to neutralize the anticoagulated blood during and after surgery. With collected samples of anticoagulated blood inserted into the system coagulation of the blood is accelerated through the controlled injection of a neutralizing additive by a corresponding injection of regulated gas. Failsafe means determine if gas is being injected into the sample and detection means detect the event of coagulation and indicate the elapsed time for coagulation. Before surgery, an anticoagulant is added to the patient's blood in a quantity necessary to avoid coagulation during surgery. The system responsive to the parameters of the patient's sex, height, and weight and/or pump volume and blood volume determines the amount of anticoagulant to be injected. During operation, samples of blood are periodically taken and analyzed to determine additional amounts of anticoagulant or neutralizing additive to inject.

US Patent:

47052120, Nov 10, 1987

Filed:

Dec 27, 1983

Appl. No.:

6/565362

Inventors:

Charles E. Miller - Boulder CO
Robert L. Poland - Boulder CO
Louis T. Yoshida - Longmont CO

Assignee:

Engineering Measurements Co. - Longmont CO

International Classification:

F16T 102

US Classification:

236 54

Abstract:

A steam system management method and apparatus includes a condensate collection reservoir with a pilot operated, pressure actuated dump valve that has a quick, snap action fully open/fully closed mode of operation. The pilot operation of the dump valve is actuated by a very low voltage solenoid actuator powered by a thermal-electric generator which thermionically converts heat from the steam system directly to electricity. Condensate dumps are controlled by liquid level sensing switches positioned near the top and bottom of the reservoir and electrically connected to a relay logic that turns the solenoid on and off. Temperature sensors positioned in the steam system and adjacent the thermal-electric generator are utilized in combination with the thermal electric generator and a microprocessor to monitor the air content in the steam system and to open the dump valve to purge excess air from the steam system. A voltage converter and voltage regulator are provided to convert very low voltage output from the thermal-electric generator to a higher voltage necessary to operate the microprocessor, and management information output displays are provided to indicate valve status, modes of operation, quantities of condensate dumped, and failure alarm.

US Patent:

49055224, Mar 6, 1990

Filed:

Aug 19, 1987

Appl. No.:

7/087558

Inventors:

Gerald L. Schlatter - Boulder CO
Robert L. Poland - Boulder CO

Assignee:

Engineering Measurements Company - Longmont CO

International Classification:

G01F 110

US Classification:

7386177

Abstract:

A flowmeter has an elongated probe with a rotor positioned at the distal end of the probe for insertion into a fluid flow and an elongated conductor in the probe that terminates adjacent the rotor. A signal generator induces a standing wave on the conductor, and rotation of the rotor, which acts as a capacitor, induces a reciprocating phase shift in the standing wave. The rate of reciprocation of the phase shift, as well as the change in amplitude at a point on the conductor, is proportional to, and indicative of, the flow rate of the fluid and is detected and measured as an instrumentation signal. The probe, rotor, circuit insulation, and seal components are all fabricated of materials that withstand extreme temperatures.