Patents by Inventor Ewald Frasl
Ewald Frasl 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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Patent number: 9769583Abstract: The present invention discloses a vibration membrane assembly for a speaker, a method for producing a vibration membrane assembly and a speaker. The assembly comprises a vibration membrane and a vibration membrane carrier ring.Type: GrantFiled: January 13, 2016Date of Patent: September 19, 2017Assignee: Sound Solutions International Co., Ltd.Inventors: Gary Hsieh, Christian Lembacher, Armin Timmerer, Ewald Frasl, Bernhard Seiwald, Peter Fischer
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Publication number: 20160205487Abstract: The present invention discloses a vibration membrane assembly for a speaker, a method for producing a vibration membrane assembly and a speaker. The assembly comprises a vibration membrane and a vibration membrane carrier ring.Type: ApplicationFiled: January 13, 2016Publication date: July 14, 2016Inventors: Gary Hsieh, Christian Lembacher, Armin Timmerer, Ewald Frasl, Bernhard Seiwald, Peter Fischer
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Patent number: 8892174Abstract: A loudspeaker comprises a voice coil and a diaphragm attached to the voice coil. The diaphragm has a generally rectangular outer shape, and comprises an outer rim (A1) having an outer edge at which the diaphragm is fixed in position and an inner section (A0) within the outer rim. The inner section (A0) comprises: an outermost area (A00) which is coupled to the voice coil and having the same generally rectangular outer shape; and an inner area (A01) comprising a periodic rib structure (A01p), with the ribs running parallel to the shorter side of the rectangular outer shape, and two lateral transition areas (A01c) between the edges of the periodic rib structure (A01p) and the shorter side edges of outermost area (A00).Type: GrantFiled: November 23, 2011Date of Patent: November 18, 2014Assignee: Knowles IPC (M) Sdn. Bhd.Inventors: Mathias Weber, Ewald Frasl
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Patent number: 8628830Abstract: In a method of and a device for producing a membrane (1) for an electroacoustic transducer, the procedure is such that a membrane (1), which has been produced for example by deep-drawing, is at least partially coated on at least one surface with a liquid plastic (7), in particular a plastic adhesive, and this liquid plastic is cured.Type: GrantFiled: February 8, 2005Date of Patent: January 14, 2014Assignee: Knowles Electronics Asia Pte. Ltd.Inventors: Stefan Amon, Ewald Frasl
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Publication number: 20130237291Abstract: A loudspeaker comprises a voice coil and a diaphragm attached to the voice coil. The diaphragm has a generally rectangular outer shape, and comprises an outer rim (A1) having an outer edge at which the diaphragm is fixed in position and an inner section (A0) within the outer rim. The inner section (A0) comprises: an outermost area (A00) which is coupled to the voice coil and having the same generally rectangular outer shape; and an inner area (A01) comprising a periodic rib structure (A01p), with the ribs running parallel to the shorter side of the rectangular outer shape, and two lateral transition areas (A01c) between the edges of the periodic rib structure (A01p) and the shorter side edges of outermost area (A00).Type: ApplicationFiled: November 23, 2011Publication date: September 12, 2013Applicant: KNOWLES ELECTRONICS ASIA PTE. LTD.Inventors: Mathias Weber, Ewald Frasl
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Patent number: 8437496Abstract: A membrane 103 for an acoustic device 100 is provided, the membrane 103, wherein the membrane 103 comprises a central portion 212, an annular portion 105, and a corrugation 107, wherein the annular portion 105 is arranged around the central portion 212, wherein the annular portion 105 is adapted to be fixed to a coil 106, and wherein the corrugation 107 is arranged between the central portion 212 and the annular portion 105. Thus, the corrugation 107 may form an inner corrugation compared to an outer corrugation 104 which would be arranged farther away from the central portion 212 than the annular portion 105.Type: GrantFiled: June 20, 2008Date of Patent: May 7, 2013Assignee: Knowles Electronics Asia PTE. Ltd.Inventor: Ewald Frasl
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Patent number: 8284964Abstract: A compound membrane (100) for an acoustic device (200), the compound membrane (100) comprising a first layer (101) and a second layer (102), wherein a value of Young's modulus of the second layer (102) does not vary more than essentially 30% in a temperature range between essentially ?20° C. and essentially +85° C.Type: GrantFiled: October 16, 2007Date of Patent: October 9, 2012Assignee: Knowles Electronics Asia PTE. Ltd.Inventors: Susanne Windischberger, Josef Lutz, Ewald Frasl
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Patent number: 7895727Abstract: In an electroacoustic transducer (21) with a stationary transducer part (23) and with a membrane configuration (17) comprising a membrane (15) and a handling ring (1) for the membrane (15) connected with the membrane (15), the membrane configuration (17) is connected with the stationary transducer part (23) via the handling ring (1), and the handling ring (1) and membrane (15) are connected together via an interlocking connection.Type: GrantFiled: March 10, 2006Date of Patent: March 1, 2011Assignee: NXP B.V.Inventor: Ewald Frasl
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Publication number: 20100215209Abstract: A membrane 103 for an acoustic device 100 is provided, the membrane 103, wherein the membrane 103 comprises a central portion 212, an annular portion 105, and a corrugation 107, wherein the annular portion 105 is arranged around the central portion 212, wherein the annular portion 105 is adapted to be fixed to a coil 106, and wherein the corrugation 107 is arranged between the central portion 212 and the annular portion 105. Thus, the corrugation 107 may form an inner corrugation compared to an outer corrugation 104 which would be arranged farther away from the central portion 212 than the annular portion 105.Type: ApplicationFiled: June 20, 2008Publication date: August 26, 2010Applicant: NXP B.V.Inventor: Ewald Frasl
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Publication number: 20100046773Abstract: An acoustic device (200, 300) comprising an oscillatory compound membrane (201) comprising a plurality of layers (202, 203, 205), wherein one of the plurality of layers (202, 203, 205) is a thermoplastic layer (203, 205), wherein the thermoplastic layer (203, 205) is joined to at least one further component (204, 206, 207) of the acoustic device (200).Type: ApplicationFiled: October 16, 2007Publication date: February 25, 2010Applicant: NXP, B.V.Inventors: Susanne Windischberger, Ewald Frasl
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Publication number: 20100040246Abstract: A compound membrane (100) for an acoustic device (200), the compound membrane (100) comprising a first layer (101) and a second layer (102), wherein a value of Young's modulus of the second layer (102) does not vary more than essentially 30% in a temperature range between essentially ?20° C. and essentially +85° C.Type: ApplicationFiled: October 6, 2007Publication date: February 18, 2010Applicant: NXP, B.V.Inventors: Susanne Windischberger, Josef Lutz, Ewald Frasl
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Patent number: 7644801Abstract: A membrane (2) for an electroacoustic transducer (1) is disclosed, wherein a thickness (d) of said membrane (2) and an average Young's modulus (Eavg) of said membrane (2) are chosen in such a way that the critical load (Fbc), which causes the membrane (2) to buckle and/or crinkle, is increased compared to a reference membrane. The reference membrane made of Polycarbonate has the same shape, dimension, and stiffness in its direction of movement (MOV) as said membrane (2). According to the result of investigations on buckling and/or crinkling, said effect occurs with different critical buckling/crinkling loads for membranes of the same shape and dimension, but made of different materials, even when the stiffness of the membranes in their direction of movement—and hence their resonant frequency—is identical.Type: GrantFiled: March 1, 2006Date of Patent: January 12, 2010Assignee: NXP B.V.Inventors: Erich Klein, Ewald Frasl, Susanne Windischberger
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Publication number: 20080202845Abstract: A membrane (2) for an electroacoustic transducer (1) is disclosed, wherein a thickness (d) of said membrane (2) and an average Young's modulus (Eavg) of said membrane (2) are chosen in such a way that the critical load (Fbc), which causes the membrane (2) to buckle and/or crinkle, is increased compared to a reference membrane. The reference membrane made of Polycarbonate has the same shape, dimension, and stiffness in its direction of movement (MOV) as said membrane (2). According to the result of investigations on buckling and/or crinkling, said effect occurs with different critical buckling/crinkling loads for membranes of the same shape and dimension, but made of different materials, even when the stiffness of the membranes in their direction of movement—and hence their resonant frequency—is identical.Type: ApplicationFiled: March 1, 2006Publication date: August 28, 2008Applicant: NXP B.V.Inventors: Erich Klein, Ewald Frasl, Susanne Windischberger
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Patent number: 7416047Abstract: A preferably elongated loudspeaker (LS), which preferably comprises a cylindrical moving coil (SP) and an elongated diaphragm (M) with an elongated fastening part (B) and an annular retaining part (H) lying within the fastening part (B), and with corrugations (S1) extending in radial directions, wherein the diaphragm (M) comprises an arrangement for reducing its stiffness in at least one narrow region (SM1, SM2), which arrangement is present between the fastening part (B) and the retaining part (H). In a preferred embodiment comprising an arrangement of the corrugations (S1) in the at least one narrow region (SM1, SM2) the corrugation density is smaller than the corrugation density in at least one wide region (BM1, BM2). Preferably, the diaphragm (M) furthermore comprises an additional corrugation (S2) in the at least one narrow region (SM1, SM2), which additional corrugation (S2) extends transversely to radial directions.Type: GrantFiled: April 19, 2005Date of Patent: August 26, 2008Inventors: Ewald Frasl, Helmut Wasinger
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Patent number: 7306073Abstract: A membrane (20) has a membrane axis (5) and a middle area (50), a central cup-shaped depression (52) being provided around said membrane axis (5), which depression (52) preferably has a connecting channel (53), wherein the middle area (50) comprises groups of stiffening grooves (54, 55, 56, 57) which extend parallel to radial directions and of which a first group of long stiffening grooves (54, 55, 56) extends up to the depression (52), said connecting channel (53) issuing into two of the long stiffening grooves (55, 56), thus interconnecting these two long stiffening grooves (55, 56).Type: GrantFiled: October 31, 2003Date of Patent: December 11, 2007Assignee: NXP B.V.Inventor: Ewald Frasl
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Publication number: 20070209866Abstract: A preferably elongated loudspeaker (LS), which preferably comprises a cylindrical moving coil (SP) and an elongated diaphragm (M) with an elongated fastening part (B) and an annular retaining part (H) lying within the fastening part (B), and with corrugations (S1) extending in radial directions, wherein the diaphragm (M) comprises an arrangement for reducing its stiffness in at least one narrow region (SM1, SM2), which arrangement is present between the fastening part (B) and the retaining part (H). In a preferred embodiment comprising an arrangement of the corrugations (S1) in the at least one narrow region (SM1, SM2) the corrugation density is smaller than the corrugation density in at least one wide region (BM1, BM2). Preferably, the diaphragm (M) furthermore comprises an additional corrugation (S2) in the at least one narrow region (SM1, SM2), which additional corrugation (S2) extends transversely to radial directions.Type: ApplicationFiled: April 19, 2005Publication date: September 13, 2007Applicant: Koninkljke Philips Electronics N.V.Inventors: Ewald Frasl, Helmut Wasinger
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Publication number: 20070178242Abstract: In a method of and a device for producing a membrane (1) for an electroacoustic transducer, the procedure is such that a membrane (1), which has been produced for example by deep-drawing, is at least partially coated on at least one surface with a liquid plastic (7), in particular a plastic adhesive, and this liquid plastic is cured.Type: ApplicationFiled: February 8, 2005Publication date: August 2, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Stefan Amon, Ewald Frasl
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Publication number: 20060150395Abstract: In an electroacoustic transducer (21) with a stationary transducer part (23) and with a membrane configuration (17) comprising a membrane (15) and a handling ring (1) for the membrane (15) connected with the membrane (15), the membrane configuration (17) is connected with the stationary transducer part (23) via the handling ring (1), and the handling ring (1) and membrane (15) are connected together via an interlocking connection.Type: ApplicationFiled: March 10, 2006Publication date: July 13, 2006Inventor: Ewald Frasl
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Patent number: 7043046Abstract: In an electroacoustic transducer (21) with a stationary transducer part (23) and with a membrane configuration (17) comprising a membrane (15) and a handling ring (1) for the membrane (15) connected with the membrane (15), the membrane configuration (17) is connected with the stationary transducer part (23) via the handling ring (1), and the handling ring (1) and membrane (15) are connected together via an interlocking connection.Type: GrantFiled: August 30, 2004Date of Patent: May 9, 2006Assignee: Koninklijke Philips Electronics N.V.Inventor: Ewald Frasl
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Publication number: 20060070796Abstract: A membrane (20) has a membrane axis (5) and a middle area (50), a central cup-shaped depression (52) being provided around said membrane axis (5), which depression (52) preferably has a connecting channel (53), wherein the middle area (50) comprises groups of stiffening grooves (54, 55, 56, 57) which extend parallel to radial directions and of which a first group of long stiffening grooves (54, 55, 56) extends up to the depression (52), said connecting channel (53) issuing into two of the long stiffening grooves (55, 56), thus interconnecting these two long stiffening grooves (55, 56).Type: ApplicationFiled: October 31, 2003Publication date: April 6, 2006Applicant: Koninklijke Philips Electronics N.V.Inventor: Ewald Frasl