Patents by Inventor Thomas A. Froeschle

Thomas A. Froeschle 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: 11095966
    Abstract: An acoustic device with an open audio device structure that is configured to be carried on the head or upper torso of a user, a housing carried by the open audio device structure, the housing having opposed first and second ends, a flat diaphragm in the housing and comprising a front face and a rear face, the diaphragm configured to radiate front acoustic radiation from its front face and rear acoustic radiation from its rear face, wherein the front and rear acoustic radiations are out of phase, structure that supports the diaphragm such that the diaphragm can move relative to the housing, a primary magnet adjacent to the rear face of the diaphragm, a magnetic circuit that defines a path for magnetic flux of the primary magnet, a voice coil that is exposed to the magnetic flux and is configured to move the diaphragm up and down along a radiation axis that is normal to the front face of the diaphragm, and first and second sound-emitting outlets in the housing, wherein the first sound-emitting outlet is in or p
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: August 17, 2021
    Assignee: Bose Corporation
    Inventors: Ray Scott Wakeland, Thomas A. Froeschle
  • Publication number: 20200145745
    Abstract: An acoustic device with an open audio device structure that is configured to be carried on the head or upper torso of a user, a housing carried by the open audio device structure, the housing having opposed first and second ends, a flat diaphragm in the housing and comprising a front face and a rear face, the diaphragm configured to radiate front acoustic radiation from its front face and rear acoustic radiation from its rear face, wherein the front and rear acoustic radiations are out of phase, structure that supports the diaphragm such that the diaphragm can move relative to the housing, a primary magnet adjacent to the rear face of the diaphragm, a magnetic circuit that defines a path for magnetic flux of the primary magnet, a voice coil that is exposed to the magnetic flux and is configured to move the diaphragm up and down along a radiation axis that is normal to the front face of the diaphragm, and first and second sound-emitting outlets in the housing, wherein the first sound-emitting outlet is in or p
    Type: Application
    Filed: January 8, 2020
    Publication date: May 7, 2020
    Inventors: Ray Scott Wakeland, Thomas A. Froeschle
  • Publication number: 20200112783
    Abstract: An acoustic device with an open audio device structure that is configured to be carried on the head or upper torso of a user, a housing carried by the open audio device structure, the housing having opposed first and second ends, a flat diaphragm in the housing and comprising a front face and a rear face, the diaphragm configured to radiate front acoustic radiation from its front face and rear acoustic radiation from its rear face, wherein the front and rear acoustic radiations are out of phase, structure that supports the diaphragm such that the diaphragm can move relative to the housing, a primary magnet adjacent to the rear face of the diaphragm, a magnetic circuit that defines a path for magnetic flux of the primary magnet, a voice coil that is exposed to the magnetic flux and is configured to move the diaphragm up and down along a radiation axis that is normal to the front face of the diaphragm, and first and second sound-emitting outlets in the housing, wherein the first sound-emitting outlet is in or p
    Type: Application
    Filed: October 4, 2018
    Publication date: April 9, 2020
    Inventors: Ray Scott Wakeland, Thomas A. Froeschle
  • Patent number: 10609465
    Abstract: An acoustic device with an open audio device structure that is configured to be carried on the head or upper torso of a user, a housing carried by the open audio device structure, the housing having opposed first and second ends, a flat diaphragm in the housing and comprising a front face and a rear face, the diaphragm configured to radiate front acoustic radiation from its front face and rear acoustic radiation from its rear face, wherein the front and rear acoustic radiations are out of phase, structure that supports the diaphragm such that the diaphragm can move relative to the housing, a primary magnet adjacent to the rear face of the diaphragm, a magnetic circuit that defines a path for magnetic flux of the primary magnet, a voice coil that is exposed to the magnetic flux and is configured to move the diaphragm up and down along a radiation axis that is normal to the front face of the diaphragm, and first and second sound-emitting outlets in the housing, wherein the first sound-emitting outlet is in or p
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: March 31, 2020
    Assignee: Bose Corporation
    Inventors: Ray Scott Wakeland, Thomas A. Froeschle
  • Patent number: 10154347
    Abstract: A loudspeaker includes an acoustic diaphragm, an oscillatory force source, a lever coupling the oscillatory force source to the acoustic diaphragm, and a pivot coupled to the lever such that the lever moves in an arcuate path about the pivot when the oscillatory force source applies a force to the lever. The pivot includes at least one torsion bushing. The at least one torsion bushing includes a first member, a second member coupled to the lever and movable relative to the first member, and an elastomeric member coupling the first member to the second member. Either the first member or the second member is coupled to and moves with the lever. An outer surface of the elastomeric member is coupled to the second member via mechanical compression.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: December 11, 2018
    Assignee: Bose Corporation
    Inventors: Brian M. Lucas, Weidong Zhu, Binu K. Oommen, Brock N. Jacobites, Thomas A. Froeschle, Joseph A. Stabile, Christopher A. Pare, Wit Bushko
  • Patent number: 10104721
    Abstract: An induction cooking utensil is constructed such that it cooks food within its chamber while maintaining a relatively cool outer surface (e.g., preferably an outer surface that is cool enough to pick up with one's bare hands). The cooking utensil includes an inner wall that is made at least in part of an electrically conductive material and an outer wall that is made at least in part of the electrically non-conductive material. A reflective layer, a vacuum-sealed thermal insulator and/or a gas more resistant to conducting heat than air is disposed between the inner and outer walls to resist the transfer of heat from the inner wall to the outer wall.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: October 16, 2018
    Assignee: Bose Corporation
    Inventors: Raymond O. England, Thomas A. Froeschle, David W. Beverly
  • Publication number: 20170118560
    Abstract: A loudspeaker includes an acoustic diaphragm, an oscillatory force source, a lever coupling the oscillatory force source to the acoustic diaphragm, and a pivot coupled to the lever such that the lever moves in an arcuate path about the pivot when the oscillatory force source applies a force to the lever. The pivot includes at least one torsion bushing. The at least one torsion bushing includes a first member, a second member coupled to the lever and movable relative to the first member, and an elastomeric member coupling the first member to the second member. Either the first member or the second member is coupled to and moves with the lever. An outer surface of the elastomeric member is coupled to the second member via mechanical compression.
    Type: Application
    Filed: October 23, 2015
    Publication date: April 27, 2017
    Applicant: BOSE CORPORATION
    Inventors: Brian M. Lucas, Weidong Zhu, Binu K. Oommen, Brock N. Jacobites, Thomas A. Froeschle, Joseph A. Stabile, Christopher A. Pare, Wit Bushko
  • Patent number: 9049501
    Abstract: An electrical apparatus to sense current through a load includes a first input terminal having a first input voltage relative to a reference, a second input terminal having a second input voltage relative to the reference, a first load terminal of the load having a first load voltage relative to the reference, a second load terminal of the load having a second load voltage relative to the reference, a first current sensing element connected between the first input terminal and the first load terminal and a second current sensing element connected between the second input terminal and the second load terminal. A first sense voltage is determined by a relationship between the first input voltage and the second load voltage and a second sense voltage is determined by a relationship between the second input voltage and the first load voltage.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: June 2, 2015
    Assignee: Bose Corporation
    Inventors: Kenneth B. Delpapa, Michael B. Nussbaum, Jay N. Teixeira, George Nichols, Thomas A. Froeschle
  • Publication number: 20140291316
    Abstract: An induction cooking utensil is constructed such that it cooks food within its chamber while maintaining a relatively cool outer surface (e.g., preferably an outer surface that is cool enough to pick up with one's bare hands). The cooking utensil includes an inner wall that is made at least in part of an electrically conductive material and an outer wall that is made at least in part of the electrically non-conductive material. A reflective layer, a vacuum-sealed thermal insulator and/or a gas more resistant to conducting heat than air is disposed between the inner and outer walls to resist the transfer of heat from the inner wall to the outer wall.
    Type: Application
    Filed: June 12, 2014
    Publication date: October 2, 2014
    Applicant: Bose Corporation
    Inventors: Raymond O. England, Thomas A. Froeschle, David W. Beverly
  • Patent number: 8796598
    Abstract: An induction cooking utensil is constructed such that it cooks food within its chamber while maintaining a relatively cool outer surface (e.g., preferably an outer surface that is cool enough to pick up with one's bare hands). The cooking utensil includes an inner wall that is made at least in part of an electrically conductive material and an outer wall that is made at least in part of the electrically non-conductive material. A reflective layer, a vacuum-sealed thermal insulator and/or a gas more resistant to conducting heat than air is disposed between the inner and outer walls to resist the transfer of heat from the inner wall to the outer wall.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: August 5, 2014
    Assignee: Bose Corporation
    Inventors: Raymond O. England, Thomas A. Froeschle, David W. Beverly
  • Publication number: 20130182859
    Abstract: An electrical apparatus to sense current through a load includes a first input terminal having a first input voltage relative to a reference, a second input terminal having a second input voltage relative to the reference, a first load terminal of the load having a first load voltage relative to the reference, a second load terminal of the load having a second load voltage relative to the reference, a first current sensing element connected between the first input terminal and the first load terminal and a second current sensing element connected between the second input terminal and the second load terminal. A first sense voltage is determined by a relationship between the first input voltage and the second load voltage and a second sense voltage is determined by a relationship between the second input voltage and the first load voltage.
    Type: Application
    Filed: July 17, 2012
    Publication date: July 18, 2013
    Inventors: Kenneth B. DelPapa, Michael Nussbaum, Jay N. Teixeira, George Nichols, Thomas A. Froeschle
  • Patent number: 8224009
    Abstract: An audio system including an audio power amplifier, a transducer electrically connected to the audio power amplifier, an enclosure coupled to the transducer, and a secondary resonant element coupled to the enclosure. An electrical feedback signal representative of the transducer current is negatively fed back to the audio power amplifier to synthesize a positive output impedance.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: July 17, 2012
    Assignee: Bose Corporation
    Inventors: Kenneth B. Delpapa, Michael B. Nussbaum, Jay N. Teixeira, George Nichols, Thomas A. Froeschle
  • Patent number: 8139804
    Abstract: An electro-acoustic transducer has an electro-magnetically driven moving dome and a phase plug having a body and a dome-interface surface, with a compression cavity formed between the dome and the dome-interface surface. The phase plug includes at least first and second annular slots beginning at the dome-interface surface and extending a first depth into the body of the phase plug. The first and second slots are separated by a bridge element at the dome-interface surface and joined by a first bridge passage at the first depth beneath the dome-interface surface. The phase plug also includes an exit slot coupling the bridge passage to a throat at a second depth in the body of the phase plug.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: March 20, 2012
    Assignee: Bose Corporation
    Inventors: John H. Wendell, Thomas A. Froeschle, Christopher B. Ickler
  • Patent number: 7965010
    Abstract: An armature for a linear motor is described. The armature includes a first of a pair of magnetic structures comprising a first plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the first plurality of maglettes having a first magnitude; and a second of the pair of magnetic structures comprising a second plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the second plurality of maglettes having a second magnitude, the first plurality of maglettes including a first outer maglette that is adjacent to a second outer maglette of the second plurality of maglettes, an angle between the magnetic polarity vectors of the first and second outer maglettes having a third magnitude that is different than at least one of the first and the second magnitudes.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: June 21, 2011
    Assignee: Bose Corporation
    Inventors: Thomas A. Froeschle, Stephen J. Maguire, Mark A. Hayner, Richard Tucker Carlmark, Rajiv Suri
  • Publication number: 20100329495
    Abstract: An electro-acoustic transducer has an electro-magnetically driven moving dome and a phase plug having a body and a dome-interface surface, with a compression cavity formed between the dome and the dome-interface surface. The phase plug includes at least first and second annular slots beginning at the dome-interface surface and extending a first depth into the body of the phase plug. The first and second slots are separated by a bridge element at the dome-interface surface and joined by a first bridge passage at the first depth beneath the dome-interface surface. The phase plug also includes an exit slot coupling the bridge passage to a throat at a second depth in the body of the phase plug.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Inventors: John H. Wendell, Thomas A. Froeschle, Christopher B. Ickler
  • Publication number: 20100147832
    Abstract: An induction cooking system including one or more methods or apparatus for identifying items of cookware. The identifying may include identifying whether in use, the temperature of the outside surface of the element of cookware is significantly lower than the temperature of the inside surface. The methods may include one or more of measuring impedance, communicating information by RF radiation, or measuring reactance.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Inventors: Charles R. Barker, III, Carolyn E. Modiano, Adam Christopher Broders, Raymond O. England, Anthony G. Esposito, Thomas A. Froeschle, Alfred G. Giombetti, John Michael Kitchura, JR., Michael Nussbaum, Laura J. Schroeder
  • Publication number: 20100092019
    Abstract: A waveguide system for radiating sound waves. The system includes a low loss waveguide for transmitting sound waves, having walls are tapered so that said cross-sectional area of the exit end is less than the cross-sectional area of the inlet end. In a second aspect of the invention, a waveguide for radiating sound waves, has segments of length approximately equal to A ? ( y ) = A inlet ? [ 1 - 2 ? Y B + ( y B ) 2 ] where l is the effective length of said waveguide and n is a positive integer. The product of a first set of alternating segments is greater than the product of a second set of alternating segments, in one embodiment, by a factor of three. In a third aspect of the invention, the first two aspects are combined.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 15, 2010
    Inventors: Jeffrey Hoefler, John H. Wendell, Robert P. Parker, Thomas A. Froeschle, William P. Schreiber
  • Publication number: 20100052437
    Abstract: An armature for a linear motor is described. The armature includes a first of a pair of magnetic structures comprising a first plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the first plurality of maglettes having a first magnitude; and a second of the pair of magnetic structures comprising a second plurality of maglettes each having a magnetic polarity vector; an angle between two adjacent magnetic polarity vectors in the second plurality of maglettes having a second magnitude, the first plurality of maglettes including a first outer maglette that is adjacent to a second outer maglette of the second plurality of maglettes, an angle between the magnetic polarity vectors of the first and second outer maglettes having a third magnitude that is different than at least one of the first and the second magnitudes.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 4, 2010
    Inventors: Thomas A. Froeschle, Stephen J. Maguire, Mark A. Hayner, Richard Tucker Carlmark, Rajiv Suri
  • Patent number: 7623670
    Abstract: A waveguide system for radiating sound waves. The system includes a low loss waveguide for transmitting sound waves, having walls are tapered so that said cross-sectional area of the exit end is less than the cross-sectional area of the inlet end. In a second aspect of the invention, a waveguide for radiating sound waves, has segments of length approximately equal to A ? ( y ) = A inlet ? [ 1 - 2 ? Y B + ( y B ) 2 ] where l is the effective length of said waveguide and n is a positive integer. The product of a first set of alternating segments is greater than the product of a second set of alternating segments, in one embodiment, by a factor of three. In a third aspect of the invention, the first two aspects are combined.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: November 24, 2009
    Inventors: Jeffrey Hoefler, John H. Wendell, Robert P. Parker, Thomas A. Froeschle, William P. Schreiber
  • Publication number: 20090065500
    Abstract: An induction cooking utensil is constructed such that it cooks food within its chamber while maintaining a relatively cool outer surface (e.g., preferably an outer surface that is cool enough to pick up with one's bare hands). The cooking utensil includes an inner wall that is made at least in part of an electrically conductive material and an outer wall that is made at least in part of the electrically non-conductive material. A reflective layer, a vacuum-sealed thermal insulator and/or a gas more resistant to conducting heat than air is disposed between the inner and outer walls to resist the transfer of heat from the inner wall to the outer wall.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 12, 2009
    Inventors: Raymond O. England, Thomas A. Froeschle, David W. Beverly