Patents by Inventor David J. Hoffmann

David J. Hoffmann 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).

  • Patent number: 9672713
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example method includes sending an interrogation signal generated by a vehicle within a first area, detecting the interrogation signal from the first area, in response to detection of the interrogation signal from the first area, receiving a first responsive signal from a first transponder in the first area, and determining a directional resolution of the first responsive signal.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: June 6, 2017
    Assignee: Rite-Hite Holding Corporation
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Patent number: 9633537
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example method includes determining threat levels for hazards in a plurality of different zones within a building, classifying the threat levels into at least one of a first threat level and a second threat level, designating a first zone of the plurality of different zones having the first threat level with a first detectable indicator, and designating a second zone having the second threat level with a second detectable indicator.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: April 25, 2017
    Assignee: Rite-Hite Holding Corporation
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Patent number: 9607496
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example hazard warning system for a forktruck includes a controllable light source to project light onto a floor adjacent the forktruck. A hazard discriminator determines when the forktruck poses a hazard to an entity of interest in a vicinity of the forktruck, and responsively generates a hazard output. A controller receives the hazard output and controls the light source such that the light source is in a first state when the hazard output is not received and a second state when the hazard output is received, where the first state is different than the second state.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: March 28, 2017
    Assignee: Rite-Hite Holding Corporation
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Patent number: 9547969
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example method for assessing a possibility of a collision between entities of interest, each having their own characteristics of movement, includes sampling movement of each entity at least two points in time, generating a trajectory vector for each entity based on the movement sampling, expanding the trajectory vector of each entity based on at least one characteristic of movement of that entity, and analyzing the expanded trajectory vector of each entity for overlap to assess a possibility of a collision between the entities of interest.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 17, 2017
    Assignee: Right-Hite Holding Corporation
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Patent number: 9542824
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example detection system includes a light source attachable to a forktruck, where the light source projects an illuminated warning field on a floor on which the forktruck is to traverse. The light source projects the illuminated warning field at a distance from a front end of the forktruck. The light source is separate from a headlight of the forktruck.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 10, 2017
    Assignee: Rite-Hite Holding Corporation
    Inventors: Ryan P Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Patent number: 9230419
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example signal generation system for a vehicle capable of different modes of movement includes a detector to determine at least one property of vehicle movement and an output representative of that at least one property and a selectively variable signal generator includes an input to receive the at least one output representative of the at least one property of vehicle movement and, responsively, generates a selected signal based on the received output. In some examples, a detector on a pedestrian detects the selected signal from the signal generator and, responsively, provides an output indicative of a vehicle in proximity to the pedestrian. In some examples, a trajectory vector is generated for at least two entities of interest based on at least one characteristic of movement of each entity.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: January 5, 2016
    Assignee: RITE-HITE HOLDING CORPORATION
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Patent number: 9170044
    Abstract: Example panel assemblies with frost inhibiting seal members are disclosed herein. Some example panel assemblies disclosed herein are particularly suited for creating a blast freezer (for food and other products) by using the panels in cordoning off a relatively small quick-freeze area within a larger freezer room. In some examples disclosed herein, a touch-and-hold fastener (e.g., VELCRO) connects two or more insulated flexible panels along their adjoining vertical edges to span the width of a supporting frame that is wider than a width of a single panel. To seal the joint and/or inhibit frost from developing along the joint, some example panel assemblies disclosed herein include a seal member with touch-and-hold elements plus sealing edges extending laterally in opposite directions. In some examples disclosed herein, the touch-and-hold elements couple two panels together while the sealing edges (e.g., foam strip or double looped sheet of material) block air from flowing through the touch-and-hold elements.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 27, 2015
    Assignee: RITE-HITE HOLDING CORPORATION
    Inventor: David J. Hoffmann
  • Publication number: 20150170498
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example method includes determining threat levels for hazards in a plurality of different zones within a building, classifying the threat levels into at least one of a first threat level and a second threat level, designating a first zone of the plurality of different zones having the first threat level with a first detectable indicator, and designating a second zone having the second threat level with a second detectable indicator.
    Type: Application
    Filed: January 30, 2015
    Publication date: June 18, 2015
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Publication number: 20150170493
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example warning device for conveying warning signals to a person includes a wearable device to be worn by the person, where the wearable device provides a non-visual warning to the person when the wearable device is activated. A controller receives hazard-indicative input signals to activate the wearable device.
    Type: Application
    Filed: January 30, 2015
    Publication date: June 18, 2015
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Publication number: 20150158428
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example method includes sending an interrogation signal generated by a vehicle within a first area, detecting the interrogation signal from the first area, in response to detection of the interrogation signal from the first area, receiving a first responsive signal from a first transponder in the first area, and determining a directional resolution of the first responsive signal.
    Type: Application
    Filed: January 30, 2015
    Publication date: June 11, 2015
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Publication number: 20150145701
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example detection system includes a light source attachable to a forktruck, where the light source projects an illuminated warning field on a floor on which the forktruck is to traverse. The light source projects the illuminated warning field at a distance from a front end of the forktruck. The light source is separate from a headlight of the forktruck.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Publication number: 20150145700
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example hazard warning system for a forktruck includes a controllable light source to project light onto a floor adjacent the forktruck. A hazard discriminator determines when the forktruck poses a hazard to an entity of interest in a vicinity of the forktruck, and responsively generates a hazard output. A controller receives the hazard output and controls the light source such that the light source is in a first state when the hazard output is not received and a second state when the hazard output is received, where the first state is different than the second state.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Publication number: 20150145661
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example method for assessing a possibility of a collision between entities of interest, each having their own characteristics of movement, includes sampling movement of each entity at least two points in time, generating a trajectory vector for each entity based on the movement sampling, expanding the trajectory vector of each entity based on at least one characteristic of movement of that entity, and analyzing the expanded trajectory vector of each entity for overlap to assess a possibility of a collision between the entities of interest.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Publication number: 20150138002
    Abstract: Systems and methods to detect and warn proximate entities of interest are described herein. An example device for conveying audible warning signals to a person includes a memory to store a plurality of audible warnings and a user interface to present for selection an audible warning from the plurality of audible warnings.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: Ryan P. Beggs, James C. Boerger, David J. Hoffmann, Ken Markham, Matthew McNeill, Timothy Muhl, Kyle Nelson, James Oates, Jason Senfleben
  • Patent number: 9010039
    Abstract: Example weather barrier apparatuses for sealing or sheltering vehicles at loading docks are disclosed herein. An example apparatus includes a side seal member to be vertically elongate and having a front surface facing away from a doorway when the apparatus is in a relaxed configuration, the side seal member extending laterally farther into a cargo passageway when the apparatus is in the relaxed configuration than when in an activated configuration, the front surface engages a vehicle as the vehicle moves between a departed position and a parked position. The apparatus also includes an upper seal member to hang in front of the side seal member when the apparatus is in the relaxed configuration, the upper seal member being horizontally elongate and having a lower corner point proximate the side seal member, the front surface facing away from the lower corner point when the apparatus is in the activated configuration.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 21, 2015
    Assignee: Rite-Hite Holding Corporation
    Inventors: Charles Digmann, David J. Hoffmann, Gary Borgerding
  • Patent number: 9003724
    Abstract: Example weather barrier apparatuses for sealing or sheltering vehicles at loading docks are disclosed herein. An example apparatus includes a side support member attachable to a wall proximate a doorway. A side seal member extends from the side support member and a rear edge seal is supported by the side seal member. The rear edge seal engages a first rear edge of a vehicle. The rear edge seal has a seal core and a seal cover, where the core has a gap defined by a first portion and a second portion.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: April 14, 2015
    Assignee: Rite-Hite Holding Corporation
    Inventors: Charles Digmann, David J. Hoffmann, Gary Borgerding
  • Patent number: 9003725
    Abstract: Example weather barrier apparatuses for sealing or sheltering vehicles at loading docks are disclosed herein. An example apparatus includes a first seal to be engaged by a vehicle as the vehicle moves between a departed position and a parked position relative to the first seal. The first seal has a penetration portion movable between a relaxed condition when the vehicle releases the first seal and an activated condition when the vehicle engages the first seal. A second seal is coupled adjacent the first seal. The second seal has an opening to be positioned adjacent the penetration portion of the first seal such that at least a portion of the penetration portion extends across at least a portion of the opening when the first seal is in the relaxed condition, and the opening of the second seal receives at least the penetration portion of the first seal when the first seal is in the activated condition.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: April 14, 2015
    Assignee: Rite-Hite Holding Corporation
    Inventors: Charles Digmann, David J. Hoffmann, Gary Borgerding
  • Patent number: 8991467
    Abstract: Example room dividers are described herein. The example room dividers include a flexible curtain with features pertaining to security, impactability, insulation, sound absorption, configurability, and/or flame resistance. In some examples, the curtain comprises an inorganic carbon fiber pad sandwiched between two sheets of fiberglass fabric coated with silicone rubber. A tongue-and-groove joint, in some examples, enables the interconnection of a series of curtains to create room dividers of various lengths. In some examples, the curtain comprises a full-width wire mesh sandwiched between two sheets of vinyl coated polyester fabric, wherein a touch-and-hold fastener at the outer perimeter of the curtain and overlapping the wire mesh holds the two sheets together and holds the wire mesh in place. In some examples, the flexibility of the curtain allows the curtain to respond to impacts and/or air pressure differentials.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: March 31, 2015
    Assignee: Rite-Hite Holding Corporation
    Inventors: Charles J. Ashelin, David J. Hoffmann, Matt Fleckenstein, Gregory J. Thill
  • Publication number: 20150007512
    Abstract: Example weather barrier apparatuses for sealing or sheltering vehicles at loading docks are disclosed herein. An example apparatus includes a side support member attachable to a wall proximate a doorway. A side seal member extends from the side support member and a rear edge seal is supported by the side seal member. The rear edge seal engages a first rear edge of a vehicle. The rear edge seal has a seal core and a seal cover, where the core has a gap defined by a first portion and a second portion.
    Type: Application
    Filed: September 11, 2014
    Publication date: January 8, 2015
    Inventors: Charles Digmann, David J. Hoffmann, Gary Borgerding
  • Publication number: 20150007513
    Abstract: Example weather barrier apparatuses for sealing or sheltering vehicles at loading docks are disclosed herein. An example apparatus includes a first seal to be engaged by a vehicle as the vehicle moves between a departed position and a parked position relative to the first seal. The first seal has a penetration portion movable between a relaxed condition when the vehicle releases the first seal and an activated condition when the vehicle engages the first seal. A second seal is coupled adjacent the first seal. The second seal has an opening to be positioned adjacent the penetration portion of the first seal such that at least a portion of the penetration portion extends across at least a portion of the opening when the first seal is in the relaxed condition, and the opening of the second seal receives at least the penetration portion of the first seal when the first seal is in the activated condition.
    Type: Application
    Filed: September 11, 2014
    Publication date: January 8, 2015
    Inventors: Charles Digmann, David J. Hoffmann, Gary Borgerding