Gerald L Schlatter

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:

46799478, Jul 14, 1987

Filed:

Jul 16, 1985

Appl. No.:

6/755493

Inventors:

Charles E. Miller - Boulder CO
Gerald L. Schlatter - Boulder CO
Louis T. Yoshida - Longmont CO

Assignee:

Engineering Measurements Co. - Longmont CO

International Classification:

G01N 936
G01K 1706

US Classification:

374 42

Abstract:

A method and apparatus for measuring steam quality of wet or two-phase flowing steam includes a flow-through densitometer comprised of two parallel tubes connected to two common nodes, a vibrator for causing the tubes to vibrate, and a transducer for detecting the frequency and amplitude of the vibrations. A temperature probe detects the temperature of the steam, and a computer is used to monitor the vibrations and temperature and to calculate steam quality. The computer can also be used to control the vibrator. An intake sampler is positioned in a flowing steam line to divert a representative sample of the wet steam into the densitometer. The bulk density of the steam is determined as a function of the fundamental frequency of the densitometer with the steam flowing therethrough, and the steam quality is determined as a function of the bulk density and vapor density, which is a function of temperature.

US Patent:

47852453, Nov 15, 1988

Filed:

Sep 12, 1986

Appl. No.:

6/906749

Inventors:

Hyok S. Lew - Arvada CO
Gerald L. Schlatter - Boulder CO

Assignee:

Engineering Measurement Company - Longmont CO

International Classification:

G01R 3320

US Classification:

324308

Abstract:

The invention relates to a method and an apparatus for determining the cut (percentage) of one component of a multiphase fluid flowing in a pipeline, for example, oil or other hydrocarbon in a fluid flow that comprises oil, water, gas, and soil components, by use of NMR analysis. The fluid is flowed through an apparatus specifically designed to perform the analysis on the flowing fluid. Carefully sequenced 90. degree. pulse series are used to take advantage of the different spin relaxation times of the selected atomic species when they are constituent parts of molecules having inherently different levels of random molecular motion. The timing between pulses in a series and between series of pulses is chosen so that NMR emissions from unwanted matter do not occur, and FID peaks from the desired matter are registered. The FID peak amplitude of the measured component of the flowing fluid is then compared to the FID peak amplitude of a 100% sample of the component, with the resulting ratio being directly related to the percentage of the component in the flowing fluid. In this way, a direct and highly accurate measure of the desired component, oil for example, is achieved on a real-time basis in the field, without the need to interrupt operations.

US Patent:

40055990, Feb 1, 1977

Filed:

Aug 5, 1975

Appl. No.:

5/602384

Inventors:

Gerald L. Schlatter - Boulder CO
Charles E. Miller - Boulder CO

Assignee:

International Telephone and Telegraph Corporation - New York NY

International Classification:

G01N 1116

US Classification:

73 59

Abstract:

Apparatus for detecting the magnitude of a property of a fluid including a body mounted on a torsion spring that is oscillated by a feedback of alternately an in-phase and an out-of-phase signal from an amplifier having a gain adequate to sustain the oscillations. If the in-phase signal has a frequency directly proportional to f. sub. n and the out-of-phase signal has a frequency directly proportional to f. sub. h, then the magnitude of the property p is determined by the digital computation of ##EQU1## where K and B are constants. The property p may be any one of several properties including but not limited to viscosity.

US Patent:

40374599, Jul 26, 1977

Filed:

Jun 28, 1976

Appl. No.:

5/700401

Inventors:

Gerald L. Schlatter - Boulder CO

Assignee:

International Telephone and Telegraph Corporation - New York NY

International Classification:

G01N 900

US Classification:

73 32A

Abstract:

A vibration densitometer including an electromechanical oscillator having an automatic phase control.

US Patent:

40889874, May 9, 1978

Filed:

Jun 24, 1976

Appl. No.:

5/699485

Inventors:

Glen L. Resler - Longmont CO
Gerald L. Schlatter - Boulder CO

International Classification:

G08B 2100

US Classification:

340242

Abstract:

A fluid leak alarm system for detecting leaks in the fluid delivery lines located for example in a fuel filling or bulk station or other pressure lines is designed to have a detector with a pressure sensor mounted into each fuel delivery line of the different product lines and a transmitter for transmitting over conventional electrical power lines a unique code identifying the fuel line in the event of a leak. The fuel leak alarm system is further designed to have a remotely located receiver which is responsive to the uniquely coded signal transmitted over the electrical power line for extracting the signal from the power line and sounding an alarm which identifies the leaking fuel delivery line. A plurality of unique codes identify the delivery lines for the different product lines so that any electrical interference which may be picked up by the power lines is ignored by the receiver which responds only to the unique codes. The pressure detector is further designed to incorporate a bellows driven piston which interacts with a photo switch to minimize the danger of fuel explosion.

US Patent:

39525929, Apr 27, 1976

Filed:

Nov 24, 1972

Appl. No.:

5/309250

Inventors:

Gerald Lance Schlatter - Boulder CO
Charles Eveleigh Miller - Boulder CO

Assignee:

International Telephone and Telegraph Corporation - New York NY

International Classification:

G01F 1115

US Classification:

73194R

Abstract:

A net oil computer including a vibration densitometer and a turbine flowmeter. The flowmeter produces output pulses at a frequency directly proportional to the rate of volume flow through a pipeline. The output of the flowmeter is impressed upon the pole of a single pole, double throw electronic switch. One switch contact is connected to an indicator through a divider, a driver amplifier and a counter. The other contact is also connected to an indicator through a divider, a driver amplifier and a counter. The switch is operated by a gate generator connected from the densitometer. The gate generator produces an output pulse of a pulse width directly proportional to the percent of oil or water in the pipeline. A temperature probe is inserted in the line to vary the pulse width in accordance with oil temperature. The densitometer has an improved magnetostrictive drive which is controlled to have a phase proper for maximum resonance.

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.