Patents by Inventor Perry D Lithgow

Perry D Lithgow 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: 9592359
    Abstract: A respiratory mask assembly includes a respiratory mask including a mask shell and a mask cushion, a forehead support adjustably coupled to the mask, and an angular adjustment member. The forehead support includes a joining member provided to the mask shell and a cushion frame pivotally mounted to the joining member. The cushion frame is adapted to be selectively locked against pivotal movement in at least three predetermined angular positions relative to the joining member by a tongue and slot arrangement. The angular adjustment member allows relative angular adjustment between the cushion frame and the joining member. The angular adjustment member includes a pair of flexible arms that are adapted to be flexed towards one another to disengage the tongue from a respective one of the slots, and releasing the flexible arms allows the flexible arms to resiliently flex away from one another to engage the tongue and the respective slot.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: March 14, 2017
    Assignee: ResMed Limited
    Inventors: Philip R. Kwok, Michael K. Gunaratnam, Perry D. Lithgow, Jonathan P. Harrison, Jonathan L. Liston, Robert S. Matchett, Robert E. Styles
  • Patent number: 9168349
    Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly removably attachable to the frame. The headgear assembly includes a pair of side portions and a rear portion that interconnects the pair of side portions. The pair of side portions includes at least one strap. The rear portion has at least one strap constructed of at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of side straps in the first direction.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: October 27, 2015
    Assignee: RESMED LIMITED
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney
  • Patent number: 8985117
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 24, 2015
    Assignee: ResMed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
  • Patent number: 8826908
    Abstract: An elbow assembly for use in a respiratory mask, which includes an elbow, an inlet port, an exhaust port, and a baffle separating the inlet port from the exhaust port. A mask assembly includes a cushion comprising at least one gusset and an aperture for connection to the elbow assembly.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: September 9, 2014
    Assignee: ResMed Limited
    Inventors: Joanne E. Drew, Memduh Guney, Amal S. Amarasinghe, Perry D. Lithgow, Anthony M Ging, Borivoje Ljubojevic, Donald Darkin, Grahame B. Aston
  • Publication number: 20130233320
    Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly removably attachable to the frame. The headgear assembly includes a pair of side portions and a rear portion that interconnects the pair of side portions. The pair of side portions includes at least one strap. The rear portion has at least one strap constructed of at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of side straps in the first direction.
    Type: Application
    Filed: April 18, 2013
    Publication date: September 12, 2013
    Applicant: RESMED LIMITED
    Inventors: Amal S. AMARASINGHE, Perry D. LITHGOW, Memduh GUNEY
  • Patent number: 8443805
    Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly removably attachable to the frame. The headgear assembly includes a pair of side portions and a rear portion that interconnects the pair of side portions. The pair of side portions includes at least one strap. The rear portion has at least one strap constructed of at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of side straps in the first direction.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: May 21, 2013
    Assignee: ResMed Limited
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney
  • Patent number: 8424530
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: April 23, 2013
    Assignee: ResMed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
  • Publication number: 20130008447
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicant: ResMed Limited
    Inventors: Michael K. GUNARATNAM, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
  • Patent number: 8312881
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: November 20, 2012
    Assignee: Resmed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
  • Patent number: 8312883
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: November 20, 2012
    Assignee: Resmed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
  • Patent number: 8286636
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: October 16, 2012
    Assignee: Resmed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
  • Publication number: 20120222681
    Abstract: A respiratory mask assembly includes a respiratory mask including a mask shell and a mask cushion, a forehead support adjustably coupled to the mask, and an angular adjustment member. The forehead support includes a joining member provided to the mask shell and a cushion frame pivotally mounted to the joining member. The cushion frame is adapted to be selectively locked against pivotal movement in at least three predetermined angular positions relative to the joining member by a tongue and slot arrangement. The angular adjustment member allows relative angular adjustment between the cushion frame and the joining member. The angular adjustment member includes a pair of flexible arms that are adapted to be flexed towards one another to disengage the tongue from a respective one of the slots, and releasing the flexible arms allows the flexible arms to resiliently flex away from one another to engage the tongue and the respective slot.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Applicant: ResMed Limited
    Inventors: Philip R. KWOK, Michael K. Gunaratnam, Perry D. Lithgow, Jonathan P. Harrison, Jonathan L. Liston, Robert S. Matchett, Robert E. Styles
  • Patent number: 8186352
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: May 29, 2012
    Assignee: ResMed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch
  • Publication number: 20120024290
    Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly removably attachable to the frame. The headgear assembly includes a pair of side portions and a rear portion that interconnects the pair of side portions. The pair of side portions includes at least one strap. The rear portion has at least one strap constructed of at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of side straps in the first direction.
    Type: Application
    Filed: October 5, 2011
    Publication date: February 2, 2012
    Applicant: ResMed Limited
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney
  • Patent number: D651303
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: December 27, 2011
    Assignee: ResMed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch, Rachael E. Moore
  • Patent number: D652912
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: January 24, 2012
    Assignee: ResMed Limited
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney
  • Patent number: D656607
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: March 27, 2012
    Assignee: ResMed Limited
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch, Rachael E. Moore
  • Patent number: D671205
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: November 20, 2012
    Assignee: ResMed Limited
    Inventors: Memduh Guney, Timothy Tsun-Fai Fu, Perry D. Lithgow, Amal S. Amarasinghe, Joanne E. Drew, Jim Saada, Borivoje Ljubojevic, Anthony Ging, Susan R. Lynch, Gary C. Robinson, Robert H. Frater
  • Patent number: D740931
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: October 13, 2015
    Assignee: RESMED LIMITED
    Inventors: Timothy Tsun-Fai Fu, Memduh Guney, Perry D. Lithgow
  • Patent number: D800299
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: October 17, 2017
    Assignee: RESMED LIMITED
    Inventors: Michael K. Gunaratnam, Philip R. Kwok, Robin G. Hitchcock, Lee J. Veliss, Memduh Guney, Richard Sokolov, Perry D. Lithgow, Donald Darkin, Susan R. Lynch, Rachael E. Moore