1
Michael T McMahon: Device including light emitting diode as light sensor and light source. Overhead Door Corporation, Gardere Wynne Sewell, Kenneth R Glaser, July 7, 2009: US07557690 (17 worldwide citation)


A battery operated controller for a door operator includes a keypad backlit by a light emitting diode operably connected to a microcontroller which also controls operation of the controller. The microcontroller periodically measures ambient light as sensed by the light emitting diode and when a volt ...


2
Stephen C Pyke, Donald L Boos, Michael T McMahon: Lightweight, compact detector of sudden changes in concentration of a gas. The Standard Oil Company, Jeffrey A Wyand, Joseph G Curatolo, Larry W Evans, August 2, 1988: US04761639 (16 worldwide citation)


Lightweight, compact apparatus for detecting sudden changes in the concentration of at least one selected gas provides a warning when said gas concentration increases suddenly. In one embodiment, a chemically sensitive field effect transistor provides a sensing signal two amplifiers having different ...


3
Michael T McMahon: Barrier operator controller with user adjustable force setpoint. Overhead Door Corporation, Gardere Wynne Sewell, November 20, 2007: US07298107 (14 worldwide citation)


A control unit for a moveable barrier, such as a garage door, includes a microcontroller connected to a motor speed detector, motor current sensor or a sensor for determining forces exerted on or by the barrier. A user interface includes user actuatable switches for setting a first maximum force val ...


4
Michael T McMahon: Barrier operator controller with user adjustable force setpoint. Overhead Door Corporation, Gardere Wynne Sewell, April 25, 2006: US07034486 (10 worldwide citation)


A control unit for a moveable barrier, such as a garage door, includes a microcontroller connected to a motor speed detector, motor current sensor or a sensor for determining forces exerted on or by the barrier. A user interface includes user actuatable switches for setting a first maximum force val ...


5
Robert L Vivenzio, Michael T McMahon, Steven R Slawson, Dominick Danna, Allan I Krauter, Dale C Saddlemire: Welch Allyn, March 27, 2012: US08142352 (9 worldwide citation)


A portable illuminator includes a contained power source and an integrally contained light source that is selectively inserted into the handle portion of a vaginal speculum. The portable illuminator includes at least one feature to protect the illuminator from contamination and to prevent users from ...


6
Dominick Danna, Allan I Krauter, Robert L Vivenzio, Dale C Saddlemire, Michael T McMahon, Ervin Goldfain: Welch Allyn, Hiscock & Barclay, April 17, 2012: US08157728 (8 worldwide citation)


A vaginal speculum includes an upper blade member and a lower blade member that is movably connected with respect to the upper blade. The lower blade member includes an integrated handle portion having a receiving cavity configured for interchangeably receiving one of a first illumination assembly a ...


7
Michael T McMahon, Steven R Slawson, David C Woods, Andrew J Kugler: Acoustic measurement tip. Welch Allyn, Roger P Bonenfant, February 8, 2011: US07882928 (8 worldwide citation)


A tip for coupling sound between a medical instrument and an ear includes a sealing surface configured to substantially conform the tip to an auditory canal of the ear. The tip includes an acoustic tube acoustically coupled to at least one of the plurality of openings and defining a first acoustic p ...


8
Michael T McMahon: Device including light emitting diode as light sensor and light source. Overhead Door Corporation, Gardere Wynne Sewell, May 9, 2006: US07042341 (7 worldwide citation)


A battery operated controller for a door operator includes a keypad backlit by a light emitting diode operably connected to a microcontroller which also controls operation of the controller. The microcontroller periodically measures ambient light as sensed by the light emitting diode and when a volt ...


9
Michael T McMahon: Portable hay bale moisture tester. Farmex, Vytas R Matas, July 11, 2000: US06088657 (7 worldwide citation)


A hay bale moisture measuring device comprising a bimetalic, probe forming a single cell battery uses the hay and the moisture therein as the electrolytes to provide an internal cell resistance measurement which is calculated in an electronic circuit according to a predetermined algorithm into a hay ...


10
Michael T McMahon, Allan I Krauter, Robert L Vivenzio, Dale C Saddlemire, Dominick Danna, Stephen W Burnett, Daniel C Briggs, Scott G Spanfelner, Jon R Salvati: Welch Allyn, May 7, 2013: US08435175 (6 worldwide citation)


A vaginal speculum apparatus includes a portable illumination assembly that is releasably attached to one of the upper blade and lower blade of a disposable vaginal speculum. The portable illumination assembly is defined by a housing that retains at least one LED and a portable power supply. The por ...



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