Patents by Inventor Glenn A. Forrest
Glenn A. Forrest has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220356738Abstract: Apparatus and associated methods relate to a selectively operated safety latch having an active mode and a stowed mode. In an illustrative example, a retractable safety latch may include a tongue element extending in a first plane and a base element extending in a second plane. The tongue element, for example, may include multiple mode selection slots. The base element may include a brace slot. For example, one of the multiple mode selection slots and the brace slot may receive a security pin long a longitudinal axis so that a predetermined mode is selected. In the active mode, the tongue element extends away from the base element to releasably engage a striker element. In the inactive mode, the first plane and the second plane are substantially parallel such that the tongue element is prevented from engaging the striker element. Various embodiments may advantageously provide quick switching security latch operations.Type: ApplicationFiled: May 6, 2022Publication date: November 10, 2022Applicant: ATECH AVIATION CONSULTING, LLC d/b/a NEOVATION DESIGN GROUPInventor: Andre Glenn Forrest
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Patent number: 11428731Abstract: A sensor integrated circuit including a regulator for generating a regulated voltage includes a digital load configured to draw a load current from the regulator in response to a clock signal during in situ operation and a comparator configured to determine the absence or presence of a fault during in situ operation. The load current is less than or equal to a predetermined level in the absence of a fault and is greater than the predetermined level in the presence of a fault. The comparator is responsive to the load current and to a threshold level and is configured to generate a comparator output signal having a level indicative of whether the load current is less than or greater than the threshold level in order to thereby determine the absence or presence of a fault during in situ operation, respectively.Type: GrantFiled: February 10, 2021Date of Patent: August 30, 2022Assignee: Allegro MicroSystems, LLCInventors: Glenn A. Forrest, Thomas J. Kovalcik, Wei Zhang
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Publication number: 20210165038Abstract: A sensor integrated circuit including a regulator for generating a regulated voltage includes a digital load configured to draw a load current from the regulator in response to a clock signal during in situ operation and a comparator configured to determine the absence or presence of a fault during in situ operation. The load current is less than or equal to a predetermined level in the absence of a fault and is greater than the predetermined level in the presence of a fault. The comparator is responsive to the load current and to a threshold level and is configured to generate a comparator output signal having a level indicative of whether the load current is less than or greater than the threshold level in order to thereby determine the absence or presence of a fault during in situ operation, respectively.Type: ApplicationFiled: February 10, 2021Publication date: June 3, 2021Applicant: Allegro MicroSystems, LLCInventors: Glenn A. Forrest, Thomas J. Kovalcik, Wei Zhang
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Patent number: 10948537Abstract: A sensor integrated circuit including a regulator for generating a regulated voltage includes a digital load configured to draw a load current from the regulator in response to a clock signal during in situ operation and a comparator configured to determine the absence or presence of a fault during in situ operation. The load current is less than or equal to a predetermined level in the absence of a fault and is greater than the predetermined level in the presence of a fault. The comparator is responsive to the load current and to a threshold level and is configured to generate a comparator output signal having a level indicative of whether the load current is less than or greater than the threshold level in order to thereby determine the absence or presence of a fault during in situ operation, respectively.Type: GrantFiled: January 18, 2019Date of Patent: March 16, 2021Assignee: Allegro MicroSystems, LLCInventors: Glenn A. Forrest, Thomas J. Kovalcik, Wei Zhang
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Publication number: 20200233028Abstract: A sensor integrated circuit including a regulator for generating a regulated voltage includes a digital load configured to draw a load current from the regulator in response to a clock signal during in situ operation and a comparator configured to determine the absence or presence of a fault during in situ operation. The load current is less than or equal to a predetermined level in the absence of a fault and is greater than the predetermined level in the presence of a fault. The comparator is responsive to the load current and to a threshold level and is configured to generate a comparator output signal having a level indicative of whether the load current is less than or greater than the threshold level in order to thereby determine the absence or presence of a fault during in situ operation, respectively.Type: ApplicationFiled: January 18, 2019Publication date: July 23, 2020Applicant: Allegro MicroSystems, LLCInventors: Glenn A. Forrest, Thomas J. Kovalcik, Wei Zhang
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Patent number: 9575103Abstract: An integrated circuit includes an output circuit having a first terminal adapted to couple to an external power supply, a second terminal adapted to couple to a reference potential, and a third, control terminal. The first and second terminals of the output circuit provide output terminals of the integrated circuit. The integrated circuit further includes an impedance measurement circuit responsive to the external power supply to generate a control signal for coupling to the control terminal of the output circuit. The control signal controls a current level associated with the output circuit. A corresponding method is also described.Type: GrantFiled: May 30, 2014Date of Patent: February 21, 2017Assignee: ALLEGRO MICROSYSTEMS, LLCInventors: Glenn A. Forrest, Wei Zhang
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Patent number: 9513337Abstract: An integrated circuit sensor includes circuitry and methods for generating a high speed delay fault test clock signal. A trimmable oscillator generates a master clock signal for use by an output protocol processor to provide the sensor output signal. A fault test clock signal generator is responsive to the master clock signal and to a test trigger signal for generating the test clock signal having a launch pulse and a capture pulse, each having edges substantially coincident with like edges of pulses of the master clock signal and a spacing between launch and capture pulses established by the trimmable master clock signal.Type: GrantFiled: November 7, 2011Date of Patent: December 6, 2016Assignee: Allegro Microsystems, LLCInventors: Glenn A. Forrest, Aaron Cook, Dana Briere, Devon Fernandez, Naota Nakayama
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Publication number: 20150346252Abstract: An integrated circuit includes an output circuit having a first terminal adapted to couple to an external power supply, a second terminal adapted to couple to a reference potential, and a third, control terminal. The first and second terminals of the output circuit provide output terminals of the integrated circuit. The integrated circuit further includes an impedance measurement circuit responsive to the external power supply to generate a control signal for coupling to the control terminal of the output circuit. The control signal controls a current level associated with the output circuit. A corresponding method is also described.Type: ApplicationFiled: May 30, 2014Publication date: December 3, 2015Applicant: ALLEGRO MICROSYSTEMS, LLCInventors: Glenn A. Forrest, Wei Zhang
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Patent number: 8931403Abstract: An oil filtering system for a storage unit configured to receive and hold oil from a fryer in a main storage space thereof includes a filtering unit and a conveying unit. The filtering unit is removably arranged on an inner bottom surface of the storage unit within the main storage space and configured to filter the oil in the storage unit via lower and upper filtering layers thereof. The conveying unit is removably connected to the filtering unit and has a portion extending upwardly from the filtering unit within the main storage space for conveying the filtered oil from the filtering unit.Type: GrantFiled: August 21, 2008Date of Patent: January 13, 2015Assignee: Illinois Tool Works, Inc.Inventors: Paul Glenn Forrest, Charles Amoss, Darrin P. Furgason
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Publication number: 20140145711Abstract: A circuit to detect a movement of an object includes a magnetic field sensing element for generating a magnetic field signal proportional to a magnetic field associated with the object and a motion detector to generate a motion signal indicative of the movement of the object. The motion detector includes a peak identifying circuit to provide a peak signal and a peak sample selection module that selects a sample associated with one or more prior cycles of a magnetic field signal to generate a selected peak signal. The motion detector further includes a threshold generator to generate a threshold signal as a function of the selected peak signal and a comparator to compare the threshold signal with the magnetic field signal to generate the motion signal. Peak samples from prior magnetic field signal cycles may be averaged for use to establish the threshold signal. A method associated with the circuit is also described.Type: ApplicationFiled: November 26, 2012Publication date: May 29, 2014Inventors: Eric Burdette, James M. Bailey, Daniel S. Dwyer, Jeff Eagen, Glenn A. Forrest, Christine Graham, Eric Shoemaker, P. Karl Scheller
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Patent number: 8723512Abstract: A circuit to detect a movement of an object includes a magnetic field sensing element for generating a magnetic field signal proportional to a magnetic field associated with the object and a motion detector to generate a motion signal indicative of the movement of the object. The motion detector includes a peak identifying circuit to provide a peak signal and a peak sample selection module that selects a sample associated with one or more prior cycles of a magnetic field signal to generate a selected peak signal. The motion detector further includes a threshold generator to generate a threshold signal as a function of the selected peak signal and a comparator to compare the threshold signal with the magnetic field signal to generate the motion signal. Peak samples from prior magnetic field signal cycles may be averaged for use to establish the threshold signal. A method associated with the circuit is also described.Type: GrantFiled: November 26, 2012Date of Patent: May 13, 2014Assignee: Allegro Microsystems, LLCInventors: Eric Burdette, James M. Bailey, Daniel S. Dwyer, Jeff Eagen, Glenn A. Forrest, Christine Graham, Eric Shoemaker, P. Karl Scheller
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Publication number: 20130116945Abstract: An integrated circuit sensor includes circuitry and methods for generating a high speed delay fault test clock signal. A trimmable oscillator generates a master clock signal for use by an output protocol processor to provide the sensor output signal. A fault test clock signal generator is responsive to the master clock signal and to a test trigger signal for generating the test clock signal having a launch pulse and a capture pulse, each having edges substantially coincident with like edges of pulses of the master clock signal and a spacing between launch and capture pulses established by the trimmable master clock signal.Type: ApplicationFiled: November 7, 2011Publication date: May 9, 2013Applicant: Allegro Microsystems, Inc.Inventors: Glenn A. Forrest, Aaron Cook, Dana Briere, Devon Fernandez, Naota Nakayama
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Patent number: 8299783Abstract: A circuit to detect a movement of an object has a calibration time period that ends when peak detectors in the circuit stop updating for a predetermined amount of time. A method associated with the circuit is also described.Type: GrantFiled: August 27, 2009Date of Patent: October 30, 2012Assignee: Allegro Microsystems, Inc.Inventors: Devon Fernandez, Glenn A. Forrest
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Patent number: 8164324Abstract: A rotation sensor includes a detecting portion, a rotational state determining portion and a pulse generating portion. The detecting portion detects a rotation of a rotational member and outputs a detection signal. The rotational state determining portion determines a rotational state of the rotational member on the basis of the detection signal in a predetermined period. The pulse generating portion generates and outputs a first pulse and a second pulse, of which waveforms differ from each other, in response to a rotational direction of the rotational member after the predetermined period. The pulse generating portion further generates and outputs a third pulse regardless of the rotational state of the rotational member in the predetermined period.Type: GrantFiled: July 17, 2009Date of Patent: April 24, 2012Assignees: Aisin Seiki Kabushiki Kaisha, Allegro Microsystems, Inc.Inventors: Takashi Hara, Hidenobu Muramatsu, Glenn A. Forrest, Hitoshi Yabusaki, Naota Nakayama
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Patent number: 7982454Abstract: A proximity detector employs a first peak detector circuit and a second peak detector circuit, both responsive to a magnetic field signal. The second peak detector circuit includes a positive peak detector circuit and a negative peak detector circuit, each of which have a predetermined excursion limit in an outward direction away from a center voltage of the magnetic field signal so as to be less affected by a large signature region in the magnetic field signal. The proximity detector also includes an output control circuit. The output control circuit is configured to provide an output signal, which, during a determined time period, changes state in response to the first peak detector circuit, and which, after the determined time period, changes state in response to the second peak detector circuit.Type: GrantFiled: June 26, 2007Date of Patent: July 19, 2011Assignee: Allegro Microsystems, Inc.Inventors: Devon Fernandez, Jeff Eagen, Glenn A. Forrest, Mathew Drouin
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Publication number: 20110048102Abstract: A circuit to detect a movement of an object has a calibration time period that ends when peak detectors in the circuit stop updating for a predetermined amount of time. A method associated with the circuit is also described.Type: ApplicationFiled: August 27, 2009Publication date: March 3, 2011Inventors: Devon Fernandez, Glenn A. Forrest
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Patent number: 7746056Abstract: An electronic circuit includes a substrate having a surface and a device supported by the surface of the substrate. The electronic circuit also includes a magnetic field transducer disposed over the surface of the substrate and an insulating layer disposed between the substrate and the magnetic field transducer. The electronic circuit also includes a conductor disposed over the magnetic field transducer. The conductor is configured to carry an electrical current to generate a first magnetic field. The electronic circuit is responsive to the first magnetic field.Type: GrantFiled: January 22, 2009Date of Patent: June 29, 2010Assignee: Allegro Microsystems, Inc.Inventors: Jason Stauth, Richard Dickinson, Glenn Forrest, Ravi Vig
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Patent number: 7694200Abstract: An integrated circuit and a method of built-in self test in the integrated circuit employ an offset control node and offset capabilities with the integrated circuit in order to communicate and distribute a built-in self-test signal. The built-in self-test signal can emulate signals internal to the integrated circuit during normal operation, and/or the built-in self-test signal can have other signal characteristics representative of signals other than those signals internal to the integrated circuit during normal operation.Type: GrantFiled: July 18, 2007Date of Patent: April 6, 2010Assignee: Allegro Microsystems, Inc.Inventors: Glenn A. Forrest, Washington Lamar
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Publication number: 20100013467Abstract: A rotation sensor includes a detecting portion, a rotational state determining portion and a pulse generating portion. The detecting portion detects a rotation of a rotational member and outputs a detection signal. The rotational state determining portion determines a rotational state of the rotational member on the basis of the detection signal in a predetermined period. The pulse generating portion generates and outputs a first pulse and a second pulse, of which waveforms differ from each other, in response to a rotational direction of the rotational member after the predetermined period. The pulse generating portion further generates and outputs a third pulse regardless of the rotational state of the rotational member in the predetermined period.Type: ApplicationFiled: July 17, 2009Publication date: January 21, 2010Applicants: AISIN SEIKI KABUSHIKI KAISHA, ALLEGRO MICROSYSTEMS, INC.Inventors: Takashi HARA, Hidenobu MURAMATSU, Glenn A. FORREST, Hitoshi YABUSAKI, Naota NAKAYAMA
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Publication number: 20090128130Abstract: An electronic circuit includes a substrate having a surface and a device supported by the surface of the substrate. The electronic circuit also includes a magnetic field transducer disposed over the surface of the substrate and an insulating layer disposed between the substrate and the magnetic field transducer. The electronic circuit also includes a conductor disposed over the magnetic field transducer. The conductor is configured to carry an electrical current to generate a first magnetic field. The electronic circuit is responsive to the first magnetic field.Type: ApplicationFiled: January 22, 2009Publication date: May 21, 2009Inventors: Jason Stauth, Richard Dickinson, Glenn Forrest, Ravi Vig