Harry E Betsill

7422723, Sep 9, 2008

Oct 24, 2003

10/693114

Harry Edwards Betsill - Parkton MD, US

Alcohol Detection Systems, Inc. - Baltimore MD

G01N 33/00

422 84, 422 83, 422 90, 422 91, 422 92, 422104

A breath alcohol detection device includes a one-piece multi-passage block with attached sensors, a valve and a fuel cell. The cell accurately determines the BrAC of a prospective vehicle operator. In the event the BrAC is less than the legal maximum for a territory, the device unlocks an ignition interlock to permit starting of the engine and operation of the vehicle.

7763208, Jul 27, 2010

Nov 1, 2004

10/978773

John Carl Steichen - Landenberg PA, US
Harry Edwards Betsill - Parkton MD, US

E.I. du Pont de Nemours and Company - Wilmington DE

G01N 30/96

422 88

Disclosed herein is a device and method for converting the resistances of an array of metal oxide sensors into digital signals, wherein the sensors respond to the concentration of gases surrounding the sensor array. The device includes an electronic excitation device that provides an excitation voltage to the sensors; analog-to-digital signal conversion devices that convert the resistances of the sensors to digital signals; and means for calculating gas concentrations from the digital signals.

8236246, Aug 7, 2012

Sep 29, 2005

11/241452

Harry Edwards Betsill - Parkton MD, US

E I du Pont de Nemours and Company - Wilmington DE

G01N 31/12

422 94, 73 232, 7386108, 204600, 25037001

Disclosed herein is a gas sensitive apparatus that is useful in view of its applicability to the detection or quantitative determination of individual gases present in a gas mixture, and is advantageous in view of its compact size, and its low power consumption.

51638185, Nov 17, 1992

Feb 5, 1990

7/476131

Harry E. Betsill - Cockeysville MD
William A. Cook - Wilmington DE

Ametek, Inc. - New York NY

F04B 2500
F04B 4900

417 18

An air sampling device comprises a pump assembly including a pump and a motor operably associated with the pump, the air flow rate of the assembly being substantially characterized by a function having a plurality of measurable variables; sensors for periodically automatically monitoring the variables; a programmable computer operably associated with the sensors for periodically estimating the instantaneous air flow rate of the pump from the function and the monitored variables and for camparing the calculated instantaneous air flow rate with a previously programmed desired air flow rate; and a DC-DC converter responsive to the computer and operably associated with the motor for modulating the motor speed in response to the computer to thereby cause the instantaneous air flow rate of the pump to approach the desired air flow rate.

59719826, Oct 26, 1999

Jun 13, 1997

8/873893

Harry Edwards Betsill - Parkton MD
Michael Joseph Kovacevich - White Marsh MD

LP Systems Corporation - Richmond Hill NY

A61B 1741

606 36

Method and apparatus for controlling an epilation procedure in which a removal process is adaptively controlled for optimum removal prevention of scarring and minimizing sensation, and profiling RF power supplied as an inverse square of measured impedance based on a normalizing impedance.

40114996, Mar 8, 1977

Feb 11, 1976

5/657339

Harry E. Betsill - Baltimore MD
Charles J. Levin - Baltimore MD
Guilfred L. Vogt - Baltimore MD

The Bendix Corporation - Southfield MI

G05F 116

323 435S

A high speed a. c. voltage regulator comprises a transformer having a plurality of switchable primary windings across which an unregulated voltage is impressed and which control the regulated voltage, and a secondary winding across which the regulated voltage is generated. During a regulation period, which comprises one cycle of the unregulated voltage frequency, peak unregulated input voltage is compared against an upward ramping reference voltage to control a source of clock pulses, where the instantaneous level of the reference voltage is related to the number of clock pulses generated during a regulation period. The number of clock pulses generated during a regulation period controls the switchable windings.

59975350, Dec 7, 1999

Aug 18, 1997

8/912543

Harry Edwards Betsill - Parkton MD
Michael Joseph Kovacevich - White Marsh MD

LP Systems Corporation - Richmond Hill NY

A61B 1741

606 43

A control system to establish consistency in carrying out an epilation procedure, in which a main microcomputer is associated with an RF amplifier chain for producing RF energy to be transmitted to a hair follicle of a patient by means of an epilator probe, and a slave microcomputer is associated with the main microcomputer and the RF amplifier chain to protect the patient from a misapplication of RF power, the slave microcomputer independently monitors pulse timing and cooperates with the main microcomputer to enable the RF amplifier chain.

44700466, Sep 4, 1984

Feb 2, 1982

6/345192

Harry E. Betsill - Timonium MD

E. I. Du Pont de Nemours and Company - Wilmington DE

H04Q 900
G08B 1326

34082523

A machine tool safety system having a signal induced in a capacitive receptor antenna by the action of an electric field capacitively coupled thereto includes a receiver having an array of linear amplifiers with fast response times, a network connected to the output of each amplifier and responsive to a first command to sample the amplifier output signal, an analog-to-digital converter associated with the sampling network to quantize the signal from the first amplifier in the array that is not saturated, and a network responsive to a second command to dump the sampled signal value prior to the occurrence of the next sample time.