Patents Assigned to Technology Properties Limited
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Publication number: 20130156254Abstract: A transducer utilizes a sound-producing member positioned in the area of magnetic flux concentration between magnetic poles of opposite polarity. The sound-producing member is variably vibratable in a magnetic structure between the poles to generate acoustic waves, and an acoustic conduit carries the acoustic waves through the magnetic poles e to a location outside the magnetic structure.Type: ApplicationFiled: August 14, 2012Publication date: June 20, 2013Applicant: Technology Properties Limited LLCInventor: Roger A. Adelman
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Patent number: 8428297Abstract: An acoustic transducer includes a sound-producing member at least partially disposed within the first magnetic flux gap region between the magnetic poles, the sound-producing assemblage is magnetically excited through a magnetic circuit that passes from a location outside the magnetic flux gap region to inside the magnetic flux region through an air gap.Type: GrantFiled: February 26, 2010Date of Patent: April 23, 2013Assignee: Technology Properties LimitedInventor: Roger A. Adelman
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Patent number: 8243978Abstract: A transducer utilizes a sound-producing member positioned in the area of magnetic flux concentration between magnetic poles of opposite polarity. The sound-producing member is variably vibratable in a magnetic structure between the poles to generate acoustic waves, and an acoustic conduit carries the acoustic waves through the magnetic poles e to a location outside the magnetic structure.Type: GrantFiled: February 27, 2009Date of Patent: August 14, 2012Assignee: Technology Properties LimitedInventor: Roger A. Adelman
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Patent number: 7810224Abstract: A method for manufacturing a stator (24) for an electrostatic loudspeaker in which at least a part of a structure (28) for forming the stator (24) is moulded from an electrically insulating material. This structure (28) may be a frame of the stator. To complete the stator (24), electrically conductive portions (30) are combined with the moulded structure to form a complete structure that includes an electrically conductive grid (29). The electrically conductive portions (30) may be a preformed grid (29). The frame (28) and the grid (29) may be press-fitted together. Alternatively the moulded structure may be electrically conductive, and electrically insulating portions may be combined with it to form a complete stator. Manufacture of electrostatic loudspeaker stators using a moulding process allows for relatively low cost production methods that can repeatedly achieve a required high degree of accuracy.Type: GrantFiled: August 4, 2006Date of Patent: October 12, 2010Assignee: Immersion Technology Property LimitedInventors: Charles Corneles Van Dongen, Lindsay Alfred Champion, Evan Douglas Evans, Craig Evans, Grover Latham Howard, Robert Neil MacKinlay
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Patent number: 7577269Abstract: A transducer utilizes a sound-producing member positioned in the area of magnetic flux concentration between magnetic poles of opposite polarity. The sound-producing member is variably vibratable in a magnetic structure between the poles to generate acoustic waves, and an acoustic conduit carries the acoustic waves through the magnetic poles e to a location outside the magnetic structure.Type: GrantFiled: August 28, 2006Date of Patent: August 18, 2009Assignee: Technology Properties LimitedInventor: Roger A. Adelman
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Publication number: 20080307632Abstract: A method for manufacturing a stator (24) for an electrostatic loudspeaker in which at least a part of a structure (28) for forming the stator (24) is moulded from an electrically insulating material. This structure (28) may be a frame of the stator. To complete the stator (24), electrically conductive portions (30) are combined with the moulded structure to form a complete stricture that includes an electrically conductive grid (29). The electrically conductive portions (30) may be a preformed grid (29). The frame (28) and the grid (29) may be press-fitted together. Alternatively the moulded structure may be electrically conductive, and electrically insulating portions may be combined with it to form a complete stator. Manufacture of electrostatic loudspeaker stators using a moulding process allows for relatively low cost production methods that can repeatedly achieve a required high degree of accuracy.Type: ApplicationFiled: August 4, 2006Publication date: December 18, 2008Applicant: Immersion Technology Property LimitedInventors: Charles Corneles Van Dongen, Lindsay Alfred Champion, Evan Douglas Evans, Craig Evans, Grover Latham Howard, Robert Neil MacKinlay
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Publication number: 20080270751Abstract: A series of computers to process data including a first and a last computer. Each of the computers except the first is preceded by a prior computer and each except the last is followed by a subsequent computer. A logic reads new data via a first data path and a logic writes old data via a second data path. A logic process the new data to produce the old data and, except for the last computer, a storage element stores the old data. The logic to write operates after the logic to read and the logic to write operates before the logic to process.Type: ApplicationFiled: April 27, 2007Publication date: October 30, 2008Applicant: Technology Properties LimitedInventors: Michael B. Montvelishsky, John W. Rible
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Publication number: 20080170430Abstract: A memory cell including a bit and bitnot sense lines as well as a random access memory (RAM) word line and a read only memory (ROM) word line. The memory cell particularly includes a static RAM (SRAM) bit cell and a ROM bit cell. The SRAM bit cell is coupled between the bit and bitnot sense lines, and is responsive to a signal on the RAM word line. The ROM bit cell is also coupled between the bit and bitnot sense lines, and is responsive to a signal on the ROM word line. The ROM bit cell includes first and second ROM pass transistors, a first node for permanently programming connection of the first ROM pass transistor to either a voltage line or a ground line, and a second node for permanently programming connection of the second ROM pass transistor to either the voltage line or the ground line.Type: ApplicationFiled: January 12, 2007Publication date: July 17, 2008Applicant: Technology Properties LimitedInventors: Dennis Ray Miller, Mohammad Hafijur Rahman, Mohammad Ehsanul Kabir