Patents by Inventor Martial Andre Robert Rousseau
Martial Andre Robert Rousseau 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: 20240048910Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: ApplicationFiled: July 10, 2023Publication date: February 8, 2024Inventors: Thomas O'Brien, Martial Andre Robert Rousseau
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Patent number: 11743651Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: GrantFiled: June 29, 2022Date of Patent: August 29, 2023Assignee: B&W Group Ltd.Inventors: Thomas O'Brien, Martial Andre Robert Rousseau
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Publication number: 20230117602Abstract: An ironless magnet assembly (128) for a loudspeaker (101) comprising two pairs of magnets (136) is disclosed. Each magnet (136) of each pair having a north pole and a south pole, a first pair of magnets (136c, 136d) are arranged with the north poles of the magnets of that pair facing each other and a second pair of magnets (136a, 136b) are arranged with the south poles of the magnets of that pair facing each other. The first pair of magnets (136c, 136d) are located opposite the second pair of magnets (136a, 136b) to define a voice coil gap (112) therebetween with each north pole of the first pair being located opposite a south pole of the second pair across the voice coil gap (112).Type: ApplicationFiled: March 30, 2021Publication date: April 20, 2023Inventors: Martial Andre Robert Rousseau, Marco Baratelli
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Publication number: 20220329947Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: ApplicationFiled: June 29, 2022Publication date: October 13, 2022Inventors: Thomas O'Brien, Martial Andre Robert Rousseau
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Patent number: 11395069Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: GrantFiled: December 30, 2019Date of Patent: July 19, 2022Assignee: B&W Group Ltd.Inventors: Thomas O'Brien, Martial André Robert Rousseau
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Patent number: 10812909Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: GrantFiled: December 12, 2019Date of Patent: October 20, 2020Assignee: EVA Automation, Inc.Inventors: Thomas O'Brien, Martial André Robert Rousseau
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Publication number: 20200145759Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: ApplicationFiled: December 30, 2019Publication date: May 7, 2020Applicant: EVA Automation, Inc.Inventors: Thomas O'Brien, Martial André Robert Rousseau
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Publication number: 20200120424Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: ApplicationFiled: December 12, 2019Publication date: April 16, 2020Applicant: EVA Automation, Inc.Inventors: Thomas O'Brien, Martial André Robert Rousseau
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Patent number: 10547949Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: GrantFiled: May 30, 2019Date of Patent: January 28, 2020Assignee: EVA Automation, Inc.Inventors: Thomas O'Brien, Martial André Robert Rousseau
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Publication number: 20190297424Abstract: A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).Type: ApplicationFiled: May 30, 2019Publication date: September 26, 2019Applicant: EVA Automation, Inc.Inventors: Thomas O'Brien, Martial Andre Robert Rousseau
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Patent number: 10390141Abstract: A loudspeaker diaphragm (12) comprising a woven fiber body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fiber body may be formed of lengths (14) non-metallic fiber material (for example glass fiber) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be significantly greater than the mass of the woven fiber body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration while providing a flatter frequency-response curve (50).Type: GrantFiled: May 27, 2016Date of Patent: August 20, 2019Assignee: Eva Automation, Inc.Inventors: Thomas O'Brien, Martial André Robert Rousseau
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Patent number: 10244312Abstract: A loudspeaker chassis assembly (2) comprises a loudspeaker chassis (4) and one or more mass damping elements (6), which dampen vibration of the chassis (4). The mass damping elements (6) may be directly attached to the chassis (4) and may be tuned to dampen one or more particular vibrational modes of the chassis (4).Type: GrantFiled: October 23, 2014Date of Patent: March 26, 2019Assignee: EVA Automation, Inc.Inventors: Martial Andre Robert Rousseau, Stuart Michael Nevill
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Patent number: 9866967Abstract: A diaphragm for a loudspeaker drive unit or for a microphone includes a rigid dome-shaped member having a thickness that varies from a first thicker thickness at a first location at the periphery of the dome-shaped member to a second thinner thickness at a second location, which is nearer to the center of the dome-shaped member. There is a step-wise change in thickness at a location between the first location and the second location. Having greater thickness at the periphery of the dome-shaped member may improve stiffness of the diaphragm and may allow for an increased break-up frequency. Having thinner material elsewhere in the dome-shaped member may allow the mass of the diaphragm to be kept low and may result in better acoustic sensitivity.Type: GrantFiled: February 14, 2017Date of Patent: January 9, 2018Assignee: B & W Group Ltd.Inventor: Martial André Robert Rousseau
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Publication number: 20170156007Abstract: A diaphragm for a loudspeaker drive unit or for a microphone includes a rigid dome-shaped member having a thickness that varies from a first thicker thickness at a first location at the periphery of the dome-shaped member to a second thinner thickness at a second location, which is nearer to the centre of the dome-shaped member. There is a step-wise change in thickness at a location between the first location and the second location. Having greater thickness at the periphery of the dome-shaped member may improve stiffness of the diaphragm and may allow for an increased break-up frequency. Having thinner material elsewhere in the dome-shaped member may allow the mass of the diaphragm to be kept low and may result in better acoustic sensitivity.Type: ApplicationFiled: February 14, 2017Publication date: June 1, 2017Applicant: B & W GROUP LTDInventor: Martial André Robert ROUSSEAU
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Patent number: 9609437Abstract: A diaphragm for a loudspeaker drive unit or for a microphone includes a rigid dome-shaped member having a thickness that varies from a first thicker thickness at a first location at the periphery of the dome-shaped member to a second thinner thickness at a second location, which is nearer to the center of the dome-shaped member. There is a step-wise change in thickness at a location between the first location and the second location. Having greater thickness at the periphery of the dome-shaped member may improve stiffness of the diaphragm and may allow for an increased break-up frequency. Having thinner material elsewhere in the dome-shaped member may allow the mass of the diaphragm to be kept low and may result in better acoustic sensitivity.Type: GrantFiled: July 31, 2013Date of Patent: March 28, 2017Assignee: B & W GROUP LTDInventor: Martial Andre Robert Rousseau
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Publication number: 20160269820Abstract: A loudspeaker chassis assembly (2) comprises a loudspeaker chassis (4) and one or more mass damping elements (6), which dampen vibration of the chassis (4). The mass damping elements (6) may be directly attached to the chassis (4) and may be tuned to dampen one or more particular vibrational modes of the chassis (4).Type: ApplicationFiled: October 23, 2014Publication date: September 15, 2016Applicant: B & W GROUP LTDInventors: Martial Andre Robert ROUSSEAU, Stuart Michael NEVILL
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Publication number: 20150256938Abstract: A diaphragm for a loudspeaker drive unit or for a microphone includes a rigid dome-shaped member having a thickness that varies from a first thicker thickness at a first location at the periphery of the dome-shaped member to a second thinner thickness at a second location, which is nearer to the centre of the dome-shaped member. There is a step-wise change in thickness at a location between the first location and the second location. Having greater thickness at the periphery of the dome-shaped member may improve stiffness of the diaphragm and may allow for an increased break-up frequency. Having thinner material elsewhere in the dome-shaped member may allow the mass of the diaphragm to be kept low and may result in better acoustic sensitivity.Type: ApplicationFiled: July 31, 2013Publication date: September 10, 2015Applicant: B&W GROUP LTDInventor: Martial Andre Robert Rousseau