1
Mark Baer, James M Robitaille: Ground fault interruptor circuit with electronic latch. Felchar Manufacturing Corporation, Marshall O Toole Gerstein Murray & Bicknell, January 5, 1993: US05177657 (37 worldwide citation)

A ground fault interruptor circuit interrupts the flow of current to a pair of lines extending between a source of power and a load. The ground fault interruptor circuit includes a circuit breaker comprising a normally open switch located in one or both of the lines, a relay circuit for selectively ...


2
James M Robitaille, Robert L Crevling Jr, Mark E Baer: Current regulating switch circuit. Shop Vac Corporation, Marshall O Toole Gerstein Murray & Borun, May 5, 1998: US05747973 (33 worldwide citation)

A regulating switch circuit for conditioning operation of a first load upon operation of a second load wherein the first load and the second load consume electrical energy from a power source includes a detecting means for detecting the operation of the second load and a sensing means for sensing an ...


3
James M Robitaille, Robert W Wilson: Electrical outlet monitor. Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Jack V Musgrove, May 29, 1990: US04929887 (29 worldwide citation)

A monitor for detecting miswiring in standard 3-spade AC electrical outlets. The monitor includes a housing, prongs for insertion into the outlet to be tested, outlet ports for an external plug, and a banana jack for a wrist strap or other anti-static device. If the outlet is properly wired, a lamp ...


4
James M Robitaille: Power outlet ground integrity and wriststrap monitor circuit. Ericson Manufacturing Company, Jones Day Reavis & Pogue, September 24, 1991: US05051732 (24 worldwide citation)

A plug-mounted wriststrap detector and ground monitor includes hot, neutral and ground input terminals which are connected to corresponding terminals of a power outlet when the circuit is plugged in. A jack is provided to plug a wriststrap into the circuit to provide electrostatic protection to the ...


5
Edward M Haley, James M Robitaille, Robert L Crevling Jr, Mark E Baer: Intelligent switch control circuit. Shop Vac Corporation, Marshall O&apos Toole Gerstein Murray & Borun, April 24, 2001: US06222285 (21 worldwide citation)

A sensing circuit is useful with a power outlet and a power tool having power supplied thereto via the power outlet. The sensing circuit includes a generator, a transmitter, and a detector. A first signal having a high frequency is developed by the generator and supplied to a first terminal of the p ...


6
Mark Baer, James M Robitaille: Combined ground fault interrupter circuit and remote control on/off device. Felchar Manufacturing Corporation, Marshall O Toole Gerstein Murray & Borun, May 3, 1994: US05309310 (19 worldwide citation)

Apparatus for remotely controlling electrical equipment includes a ground fault interrupter circuit having a selectively operable circuit breaker for connecting and disconnecting power to the electrical equipment, a transmitter for generating amplitude modulated electromagnetic radiation when it is ...


7
James M Robitaille: Resettable ground fault circuit interrupter. Ericson Manufacturing Company, Regan J Fay, January 9, 1990: US04893101 (12 worldwide citation)

A resettable circuit interrupter in a ground fault detector circuit utilizes a housing which slideably retains a solenoid coil wound on a bobbin. A contact carrier is attached to the bobbin and one or more moveable contacts are provided on the carrier opposite a corresponding set of fixed contacts. ...


8
Neil N Norell, James M Robitaille: System and method of ensuring legitimacy of a sensor signal received from a rotor position sensor in a motor. Shop Vac, Marshall Gerstein & Borun, May 23, 2006: US07050929 (10 worldwide citation)

A system and method of ensuring legitimacy of a sensor signal received from a rotor position sensor in a motor is provided that includes polling the sensor to determine a first state of the sensor signal, determining a first time delay by summing a first plurality of time constants, and initiating a ...


9
James M Robitaille: Control circuit for a liquid collecting device. Shop Vac Corporation, Marshall O Toole Gerstein Murray & Borun, April 18, 2000: US06049940 (8 worldwide citation)

A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump impeller which is located in the tank and draws liquid material from the bottom of the tank and expels it from the tank. The vacuum cleaner may have an electrical or mechanical shut-off apparatus which tur ...


10
Neil N Norell, James M Robitaille: Method and apparatus for preventing overheating in an electronically commutated motor assembly. Shop Vac Corporation, Marshall Gerstein & Borun, October 28, 2008: US07443123 (6 worldwide citation)

A control circuit for a motor includes a voltage regulator having a thermal shutdown apparatus that turns off the voltage regulator when the temperature of the control circuit rises above a pre-determined threshold level, wherein the voltage regulator is used to provide power to a plurality of insul ...