Reichl B Haskell

US Patent:

6378370, Apr 30, 2002

Filed:

Mar 8, 2000

Appl. No.:

09/520509

Inventors:

Reichl B. Haskell - Veazie ME
Joshua J. Caron - Old Town ME

Assignee:

Sensor Research Development Corp. - Orono ME

International Classification:

G01N 2902

US Classification:

73579, 73 2406, 73 6149, 310313 B

Abstract:

A method and apparatus for improving temperature stability of surface-launched acoustic wave sensors is described. The system includes a plurality of acoustic wave delay lines or resonators coated with identical films which are physically, chemically, biologically, or otherwise sensitive to one or more target chemical or biological analytes. At least one of the delay lines or resonators, referred to herein as reference channels, is used as a frequency reference to which the oscillation frequencies of the remainder of the delay lines or resonators, referred to as sensing channels, are compared. A thin coating of material that is preferably a passivation layer not sensitive to the analytes, is disposed upon the surface-launched acoustic wave sensor. The passivation layer covers sensing films on the reference channels, blocking or impeding interaction of the sensing films and the analytes thereby. The passivation layer is covered by the sensing films on the sensing channels, allowing interaction between the sensing films and the analytes thereby.

US Patent:

59922150, Nov 30, 1999

Filed:

May 29, 1997

Appl. No.:

8/864616

Inventors:

Joshua J. Caron - Orono ME
Reichl B. Haskell - Veazie ME
Carl J. Freeman - Rockville MD
John F. Vetelino - Orono ME

Assignee:

Sensor Research and Development Corp. - Orono ME

International Classification:

G01N 2900
G01N 2922
H01L 4108

US Classification:

73 2401

Abstract:

A surface acoustic wave (SAW) sensor system and associated method for accurately measuring mercury gas concentrations. The sensor includes a SAW device that may be a SAW delay-line oscillator or a SAW resonator. The surface of the piezoelectric substrate of the SAW device includes a material suitable for amalgamation with mercury. Mercury in the gaseous environment is captured with the amalgamating material so as to cause a change in the mechanical and electrical properties on the surface of the device, thereby causing a change in the frequency output of the device. The piezoelectric substrate of the SAW device is preferably coupled to a heater to permit control of the temperature at the surface of the device. The piezoelectric substrate temperature may be regulated to produce a substantial equilibrium of mercury amalgamation/desorption kinetics. Under the conditions provided by the invention, the mercury concentration in the gaseous environment can be determined.

US Patent:

20190094101, Mar 28, 2019

Filed:

Mar 20, 2017

Appl. No.:

16/087185

Inventors:

- Lisle IL, US
Alexander S. CHERNYSHOV - Naperville IL, US
Wenfeng PENG - North Aurora IL, US
Reichl B. HASKELL - Glen Ellyn IL, US
David R. MASSNER - Joliet IL, US
Dumitru ROSCA - Lisle IL, US

Assignee:

Molex, LLC - Lisle IL

International Classification:

G01M 3/28

Abstract:

The present disclosure provides a leak sensor assembly which is configured to detect the leakage of gas from a component of a piping system. The leak sensor assembly includes a housing and at least one sensor. The housing is configured to be positioned proximate to the component and forms a pocket which allows gas leaked from the component to concentrate within the pocket in a generally uniform dispersion. The at lease one sensor is configured to detect the presence and concentration of gas within the pocket of the housing.

US Patent:

20170363677, Dec 21, 2017

Filed:

Jun 21, 2017

Appl. No.:

15/628894

Inventors:

- Tulsa OK, US
Reichl B. Haskell - Lisle IL, US
Marko Spiegel - Lisle IL, US
Andrew Strong - Tulsa OK, US

Assignee:

John Zink Company, LLC - Tulsa OK

International Classification:

G01R 31/28
G01R 35/00
G01R 1/44

Abstract:

A spark detector indicates the presence of a spark by analyzing sound waves generated when an electrical spark is produced from an electrical spark generator located on an igniter rod. The spark detector includes an acoustic sensor that is in communication with the igniter rod to determine the time for the spark sound wave to travel through the igniter rod to the acoustic sensor. If a spark is not detected, the spark detector may output a signal indicating at least one of (i) the spark was not detected, (ii) to replace the electrical spark generator immediately, or (iii) replace the electrical spark generator soon such as at the next scheduled maintenance. Furthermore, the spark detector may be calibrated based on current temperature of the igniter rod based upon time of propagation of a pulse sound wave, generated by a pulse-echo generator, to reflect off an end of the igniter rod.