1
Sapir Said: Temperature measuring voltage to current converter. International Telephone and Telegraph Corporation, Stolzy A Donald, June 18, 1974: US3817104 (13 worldwide citation)

A temperature measuring voltage to current converter including a temperature-responsive resistance bridge with an output connected to the input of an amplifier having an output connected to the resistance bridge wherein the resultant change of the output current of the amplifier is directly proporti ...


2
Sapir Said: System for heating or air conditioning. International Telephone and Telegraph Corporation, April 10, 1973: US3726473 (11 worldwide citation)

A system for heating or air conditioning wherein provision is made for controlling fan speed and/or the heating and modulating valve in accordance with thermostat demand. The thermostat puts out a step function followed by a ramp for both on-off and proportional control. One valve may be used in ser ...


3
Sapir Said: Pulse generator. International Telephone and Telegraph Corporation, July 31, 1973: US3750128 (11 worldwide citation)

An electromagnetic pulse generator for use in anti-skid braking systems and in many other applications. A toothed magnetic ring rotates with the wheel of a motor vehicle. A fixed magnetic pickup forms a variable reluctance transformer with the ring. The transformer primary winding is energized with ...


4
Sapir Said: Noise discrimination apparatus. International Telephone and Telegraph Corporation, August 28, 1973: US3755745 (10 worldwide citation)

A system for producing information pulses including, for example, two magnetic pick-ups spaced apart nd, where n is any positive odd integer and d is equal to one-half the spacing between two immediately adjacent teeth of a rotatable ferromagnetic armature. A phase comparison logic circuit is connec ...


5
Sapir Said: Spark generator and components therefor. International Telephone and Telegraph Corporation, May 9, 1972: US3662185 (9 worldwide citation)

A spark igniter for gas fired devices wherein the isolated capacitor of a diode-capacitor voltage tripler is used to store electrical charge for firing the igniter. A timer is used to fire the igniter, whereby peak line current is kept very small. A special circuit is employed to disable the timer w ...


6
Sapir Said: Solid state thermostat. International Telephone and Telegraph Corporation, Stolzy A Donald, June 11, 1974: US3815815 (9 worldwide citation)

Electrical thermostats which require the running of only a minimum number of lead wires for a maximum number of functions. In one case, a capacitor smooths the firing potential of a unijunction to prevent rapid cycling, undue noise and wear. In another case, a differential amplifier with capacitor s ...


7
Sapir Said: System for heating or air conditioning. International Telephone and Telegraph Corporation, May 22, 1973: US3735148 (3 worldwide citation)

A system for heating or air conditioning wherein provision is made for controlling fan speed and/or the heating and modulating valve in accordance with thermostat demand. The thermostat puts out a step function followed by a ramp for both on-off and proportional control. One valve may be used in ser ...


8
Sapir Said: Anti-skid brake control system and failsafe circuit therefor. International Telephone & Telegraph Corporation, Stolzy A Donald, November 4, 1975: US3917359 (2 worldwide citation)

An anti-skid brake control system and a failsafe circuit therefor wherein an open in either one of two wheel velocity pick-up coils is detected by comparing the sum of the coil currents with a constant current, and suppressing, in response thereto, a controller override of the manual operation. The ...


9
Sapir Said: System for heating or air conditioning. April 3, 1973: US3724535 (1 worldwide citation)

A system for heating or air conditioning wherein provision is made for controlling fan speed and/or the heating and modulating valve in accordance with thermostat demand. The thermostat puts out a step function followed by a ramp for both on-off and proportional control. One valve may be used in ser ...


10
Sapir Said: Voltage to current converter. International Telephone and Telegraph Corporation, October 23, 1973: US3766746

A voltage to current converter having an amplifier wherein any change of the output current of the amplifier is directly proportional to any change of its input voltage and independent of its load resistance so long as the amplifier is operating within its capabilities. The converter may be used in ...