Patents by Inventor Thomas P. Schregardus

Thomas P. Schregardus 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).

  • Publication number: 20220000325
    Abstract: An autonomous cleaning robot includes a drive configured to move the robot across a floor surface, a brush proximate a lateral side of the robot, and a motor configured to rotate the brush about an axis of rotation. The brush includes a hub configured to engage the motor of the robot and arms each extending outwardly from the hub away from the axis of rotation and each being angled relative to a plane normal to the axis of rotation of the brush. Each of the arms include a first portion extending outwardly from the hub away from the axis of rotation and a second portion extending outwardly from the first portion away from the axis of rotation. An angle between the first portion of each of the arms and the plane is larger than an angle between the second portion of the each of the arms and the plane.
    Type: Application
    Filed: August 27, 2021
    Publication date: January 6, 2022
    Inventors: Thomas P. Schregardus, Travis James Gschrey
  • Patent number: 11103113
    Abstract: An autonomous cleaning robot includes a drive configured to move the robot across a floor surface, a brush proximate a lateral side of the robot, and a motor configured to rotate the brush about an axis of rotation. The brush includes a hub configured to engage the motor of the robot and arms each extending outwardly from the hub away from the axis of rotation and each being angled relative to a plane normal to the axis of rotation of the brush. Each of the arms include a first portion extending outwardly from the hub away from the axis of rotation and a second portion extending outwardly from the first portion away from the axis of rotation. An angle between the first portion of each of the arms and the plane is larger than an angle between the second portion of the each of the arms and the plane.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: August 31, 2021
    Assignee: iRobot Corporation
    Inventors: Thomas P. Schregardus, Travis James Gschrey
  • Patent number: 10966587
    Abstract: This document describes a mobile cleaning robot that includes a chassis that supports a drive system, a debris collection volume; and a cleaning head formed to complete a bottom of the robot. The cleaning head includes a frame for affixing the cleaning head to the chassis, a monolithic housing having an interior cavity, a suspension linkage movably suspending the monolithic housing from the frame, the suspension linkage being configured to lift the monolithic housing, a diaphragm formed of a flexible material and mated to the monolithic housing, a rigid duct mated the frame to form a pneumatic path between the monolithic housing and the rigid duct through the diaphragm, and cleaning extractors disposed in the interior cavity of the monolithic housing.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: April 6, 2021
    Assignee: iRobot Corporation
    Inventors: William Farmer, Thomas P. Schregardus, Eric Burbank
  • Publication number: 20200121155
    Abstract: This document describes a mobile cleaning robot that includes a chassis that supports a drive system, a debris collection volume; and a cleaning head formed to complete a bottom of the robot. The cleaning head includes a frame for affixing the cleaning head to the chassis, a monolithic housing having an interior cavity, a suspension linkage movably suspending the monolithic housing from the frame, the suspension linkage being configured to lift the monolithic housing, a diaphragm formed of a flexible material and mated to the monolithic housing, a rigid duct mated the frame to form a pneumatic path between the monolithic housing and the rigid duct through the diaphragm, and cleaning extractors disposed in the interior cavity of the monolithic housing.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 23, 2020
    Inventors: William Farmer, Thomas P. Schregardus, Eric Burbank
  • Patent number: 10470636
    Abstract: This document describes a mobile cleaning robot that includes a chassis that supports a drive system, a debris collection volume; and a cleaning head formed to complete a bottom of the robot. The cleaning head includes a frame for affixing the cleaning head to the chassis, a monolithic housing having an interior cavity, a suspension linkage movably suspending the monolithic housing from the frame, the suspension linkage being configured to lift the monolithic housing, a diaphragm formed of a flexible material and mated to the monolithic housing, a rigid duct mated the frame to form a pneumatic path between the monolithic housing and the rigid duct through the diaphragm, and cleaning extractors disposed in the interior cavity of the monolithic housing.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: November 12, 2019
    Assignee: iRobot Corporation
    Inventors: William Farmer, Thomas P. Schregardus, Eric Burbank
  • Publication number: 20180338655
    Abstract: An autonomous cleaning robot includes a drive configured to move the robot across a floor surface, a brush proximate a lateral side of the robot, and a motor configured to rotate the brush about an axis of rotation. The brush includes a hub configured to engage the motor of the robot and arms each extending outwardly from the hub away from the axis of rotation and each being angled relative to a plane normal to the axis of rotation of the brush. Each of the arms include a first portion extending outwardly from the hub away from the axis of rotation and a second portion extending outwardly from the first portion away from the axis of rotation. An angle between the first portion of each of the arms and the plane is larger than an angle between the second portion of the each of the arms and the plane.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 29, 2018
    Inventors: Thomas P. Schregardus, Travis James Gschrey
  • Publication number: 20180199785
    Abstract: This document describes a mobile cleaning robot that includes a chassis that supports a drive system, a debris collection volume; and a cleaning head formed to complete a bottom of the robot. The cleaning head includes a frame for affixing the cleaning head to the chassis, a monolithic housing having an interior cavity, a suspension linkage movably suspending the monolithic housing from the frame, the suspension linkage being configured to lift the monolithic housing, a diaphragm formed of a flexible material and mated to the monolithic housing, a rigid duct mated the frame to form a pneumatic path between the monolithic housing and the rigid duct through the diaphragm, and cleaning extractors disposed in the interior cavity of the monolithic housing.
    Type: Application
    Filed: December 1, 2017
    Publication date: July 19, 2018
    Inventors: William Farmer, Thomas P. Schregardus, Eric Burbank
  • Publication number: 20140182627
    Abstract: A mobile surface cleaning robot including a robot body having a forward drive direction, a drive system supporting the robot body above a floor surface for maneuvering the robot across the floor surface, and a robot controller in communication with the drive system. The robot also includes a collection volume supported by the robot body and a cleaning module releasably supported by the robot body and arranged to clean the floor surface. The cleaning module includes a first vacuum squeegee having a first duct, a driven roller brush rotatably supported rearward of the first vacuum squeegee, a second vacuum squeegee disposed rearward of the roller brush and having a second duct, and a third duct in fluid communication with the first and second ducts. The third duct is connectable to the collection volume at a fluid-tight interface formed by selectively engaging the cartridge with the robot body.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Applicant: iRobot Corporation
    Inventors: Marcus Williams, Joseph Johnson, Andrew Sweezey, Thomas P. Schregardus, John Reimels
  • Publication number: 20130145572
    Abstract: A mobile robot that includes a body, a drive system movably supporting the body above a cleaning surface, and a cleaning system arranged to clean the cleaning surface. The robot further includes a controller in communication with at least one of the drive system and the cleaning system and a super-hydrophobic coating applied to at least one of the drive system, the cleaning system, and the controller.
    Type: Application
    Filed: July 23, 2012
    Publication date: June 13, 2013
    Applicant: iRobot Corporation
    Inventors: Thomas P. Schregardus, Michael G. Rider
  • Patent number: 8156839
    Abstract: A vehicle gear box shift actuator and apparatus including the same. The actuator includes a lead screw; a drive nut threaded on the lead screw; a plunger; a first spring disposed between the drive nut and a first end of the plunger; a second spring disposed between the drive nut and a second end of the plunger opposite from the first end. Non-contact position sensing of the actuator output is also provided.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: April 17, 2012
    Assignee: Stoneridge Control Devices, Inc.
    Inventors: Todd Meaney, Thomas P. Schregardus, Robert Cicerchia, David Medina
  • Publication number: 20090158868
    Abstract: A crank-type linear actuator may be used to provide linear actuation, for example, in a vehicle system. In general, the actuator may use a crank assembly to convert a unidirectional rotary drive motion into a reciprocating linear actuation motion. The actuator may also use magnetic elements and magnetic sensors for non-contact position control of the actuator.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 25, 2009
    Applicant: STONERIDGE CONTROL DEVICES, INC.
    Inventors: William Farmer, Nathaniel Hockenberry, Thomas P. Schregardus, Michael Baker
  • Patent number: 7464627
    Abstract: An actuator and door latch system incorporating the same. The actuator moves a door latch between locked and unlocked positions with rapidity using a gear train directly coupled to an actuator motor or energy stored in an energy storage element such as a spring.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: December 16, 2008
    Assignee: Stoneridge Control Devices, Inc.
    Inventors: Knight Ko, Brian Ganter, Thomas P Schregardus, Eric Beishline, William H. Fort
  • Patent number: 7021415
    Abstract: An electrically actuated parking brake system and actuator therefor. The actuator includes a motor having a drive shaft, and a gear train coupled to the drive shaft, wherein the gear train provides at least one mechanical output from the actuator. The gear train may include a drive gear coupled to the drive shaft, a driven gear coupled to the drive gear, and a planetary gear set coupled to the driven gear. Various configurations are provided for isolating actuator components for controlling audible noise, including sub-frame isolation configurations, motor isolation configurations, and gear train isolation configurations.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: April 4, 2006
    Assignee: Stoneridge Control Devices, Inc.
    Inventors: William Farmer, Gary Kinnear, Thomas P. Schregardus, Yuly Yanishevsky
  • Publication number: 20040178028
    Abstract: An electrically actuated parking brake system and actuator therefor. The actuator includes a motor having a drive shaft, and a gear train coupled to the drive shaft, wherein the gear train provides at least one mechanical output from the actuator. The gear train may include a drive gear coupled to the drive shaft, a driven gear coupled to the drive gear, and a planetary gear set coupled to the driven gear. Various configurations are provided for isolating actuator components for controlling audible noise, including sub-frame isolation configurations, motor isolation configurations, and gear train isolation configurations.
    Type: Application
    Filed: November 13, 2003
    Publication date: September 16, 2004
    Inventors: William Farmer, Gary Kinnear, Thomas P. Schregardus, Yuly Yanishevsky
  • Patent number: 6739633
    Abstract: A fuel filler door actuator including a motor, a gear train coupled to the motor and to a latch arm, and a locking cam coupled to the gear train. The locking cam resists movement of the latch arm from an unlocked condition to a locked condition. A manual override cable is disclosed for manually moving the latch arm from the locked condition to an unlocked condition. A push—push mechanism is disclosed for allowing facile opening of a fuel filler door, and a quick connect/disconnect feature is disclosed for allowing facile assembly of the actuator to a fuel filler door housing.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: May 25, 2004
    Assignee: Stoneridge Control Devices, Inc.
    Inventors: John C. Holloway, Thomas P. Schregardus, Henry C. Ruff, Eric C. Beishline
  • Publication number: 20020089187
    Abstract: A fuel filler door actuator including a motor, a gear train coupled to the motor and to a latch arm, and a locking cam coupled to the gear train. The locking cam resists movement of the latch arm from an unlocked condition to a locked condition. A manual override cable is disclosed for manually moving the latch arm from the locked condition to an unlocked condition. A push-push mechanism is disclosed for allowing facile opening of a fuel filler door, and a quick connect/disconnect feature is disclosed for allowing facile assembly of the actuator to a fuel filler door housing.
    Type: Application
    Filed: July 3, 2001
    Publication date: July 11, 2002
    Inventors: John C. Holloway, Thomas P. Schregardus, Henry C. Ruff, Eric C. Beishline
  • Patent number: 6408901
    Abstract: An electromechanical actuator including an output shaft structure coupled to an output gear to allow relative motion therebetween upon application of a predetermined level of force to the output shaft structure. The relative motion opens a normally closed conductive path between a motor for driving the output gear and a power supply input terminal. Integrated position control is provided whereby the conductive path is opened at limits to the range of motion for the output shaft established by location of the ends of stationary contacts. A fuel filler valve system and a method of providing pinch protection are also provided.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: June 25, 2002
    Assignee: Stoneridge Control Devices, Inc.
    Inventors: John C. Holloway, Thomas P. Schregardus
  • Publication number: 20010045243
    Abstract: An electromechanical actuator including an output shaft structure coupled to an output gear to allow relative motion therebetween upon application of a predetermined level of force to the output shaft structure. The relative motion opens a normally closed conductive path between a motor for driving the output gear and a power supply input terminal. Integrated position control is provided whereby the conductive path is opened at limits to the range of motion for the output shaft established by location of the ends of stationary contacts. A fuel filler valve system and a method of providing pinch protection are also provided.
    Type: Application
    Filed: March 13, 2001
    Publication date: November 29, 2001
    Inventors: John C. Holloway, Thomas P. Schregardus
  • Patent number: 6067826
    Abstract: A door lock actuator including a single non-reversible drive motor for generating step-wise rotation of an output shaft through an indexing assembly which is decoupled from the motor during periods of operation. The indexing assembly includes an index pin plate coupled to a drive gear for rotation therewith. The plate includes a plurality of spaced pins which are positioned to contact a rotating paddle driven by the drive motor. The paddle successively contacts the pins in a portion of its rotation to cause corresponding rotation of the drive gear and the output gear which is meshingly engaged therewith. The output gear is coupled to an output shaft having twin cams positioned thereon for manipulating door latch pawls to control the door lock state. An override mechanism is provided which includes top and bottom override arms driven by rotation of a key in the key cylinder.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: May 30, 2000
    Assignee: Stoneridge, Inc.
    Inventors: John C. Holloway, Thomas P. Schregardus, Thomas L. Rorabacher, Francis Hlavaty
  • Patent number: 5185126
    Abstract: A system for safely disposing of pathogenic waste materials. The waste material is disposed in a chamber and heated by forced hot air to temperatures above approximately 450.degree. F. to destroy harmful bacteria within several minutes. The high temperatures melt plastic waste materials. The harmless waste is cooled providing a solid block in which syringes and other sharp items are generally encased. The temperature within the chamber is continuously sensed and the operation of the apparatus is microprocessor controlled to adjust the process time in accordance with the load size. The microprocessor further stores the sensed temperature to provide verification that the waste has been exposed to sufficient temperatures and for a sufficient time to render such waste harmless.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: February 9, 1993
    Assignee: Raytheon Company
    Inventors: Joseph R. Adamski, Robert F. Bowen, Robin C. Hossfield, Thomas P. Schregardus, John S. Skienak