1
Edgar A Hirzel: Method and apparatus for measuring the state-of-charge of a battery system. January 10, 1995: US05381096 (164 worldwide citation)

A method and apparatus for measuring the state-of-charge of a battery is provided, which includes a metering system to communicate the state-of-charge to an operator of a device powered by the battery. A digital electronic model is provided to compute the instantaneous charge in a storage battery th ...


2
Edgar A Hirzel, Douglas M Longyear Jr: Apparatus and method for determining aircraft position and velocity. Crane Co, Willian Brinks Olds Hofer Gilson & Lione, June 9, 1987: US04671650 (55 worldwide citation)

An apparatus and method for determining aircraft position and velocity is disclosed. The system includes two CCD sensors which take overlapping front and back radiant energy images of front and back overlapping areas of the earth's surface. A signal processing unit digitizers and deblurs the data th ...


3
Edgar A Hirzel: Aircraft ground velocity determination system. Crane Co, Willian Brinks Olds Hofer Gilson & Lione, January 22, 1985: US04495589 (39 worldwide citation)

A system for determining the ground velocity of an aircraft is disclosed. The system includes a CCD linear optical image sensor carried by the aircraft for forming a first and second substantially instantaneous light intensity contour of the optical image of the surface of the earth lying below the ...


4
Arnold L Betton, Edgar A Hirzel: Battery protection system. Baton Labs, Willian Brinks Olds Hofer Gilson & Lione, April 6, 1993: US05200877 (37 worldwide citation)

A vehicle storage battery protection system that senses a drop in battery voltage to a level at which the battery still retains sufficient power to start the vehicle. If the sensed voltage remains at or below this level for a time greater than the time normally required to start the vehicle, the bat ...


5
Arnold L Betton, Edgar A Hirzel: System for protecting a battery. Baton Labs, Willian Brinks Hofer Gilson & Lione, March 22, 1994: US05296997 (22 worldwide citation)

A vehicle storage battery protection system that senses a drop in battery voltage to a level at which the battery still retains sufficient power to start the vehicle. If the sensed voltage remains at or below this level for a time greater than the time normally required to start the vehicle, the bat ...


6
Edgar A Hirzel, Robert D Cook: Selective deceleration brake control system. Crane Co Hydro Aire Division, Henry L Brinks, Jack C Berenzweig, May 10, 1977: US04022513 (22 worldwide citation)

A selective deceleration brake control system which enables the operator of an aircraft or other vehicle to preselect a rate of deceleration for the vehicle. The system produces a velocity reference signal which decreases in value at a rate indicative of the rate of vehicle deceleration selected by ...


7
Arnold L Betton, Edgar A Hirzel: Battery cable assembly with in-line switch. Baton Labs, Willian Brinks Olds Hofer Gilson & Lione, November 19, 1991: US05066905 (10 worldwide citation)

A battery cable assembly having an in-line captive switch device, in which the battery cable conductor is divided into two parts, with a conductive contact pad electrically attached to the end of each part, the pads being axially aligned within the bore of a housing having a threaded sleeve member f ...


8
Edgar A Hirzel: Electronic control brake and skid control system. Crane Co, Hume Clement Brinks Willian & Olds, October 6, 1981: US04293165 (8 worldwide citation)

An electronically controlled braking system is disclosed and includes a brake servo valve for controlling brake pressure in response to an electrical brake actuating signal having a value which is controlled by a brake command circuit and a skid control circuit. The brake command circuit provides a ...


9
Edgar A Hirzel: Motor driven switch. Baton Labs, Brinks Hofer Gilson & Lione, September 7, 1999: US05949157 (7 worldwide citation)

An improved motor driven switch is provided. A control system employs the improved motor-driven switch in series with a battery to disconnect the battery from a load when the energy level of the battery drops to a predetermined level. The system comprises an overdrive circuit to ensure that the moto ...


10
Arnold L Betton, Edgar A Hirzel: System for controlling a motor driven switch. Baton Labs, Willian Brinks Hofer Gilson & Lione, March 22, 1994: US05296788 (7 worldwide citation)

A motor driven switch for use in operation between high current electrical systems and low current electrical systems. The motor driven switch includes a control circuit for operating the switch, which includes at least one switch contact movable between electrically open and closed positions. The s ...