Patents by Inventor Donald W. Carow
Donald W. Carow 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: 7406866Abstract: A micromachined device has a body suspended over a substrate and movable in a plane relative to the substrate. The body has a perimeter portion, a first cross-piece portion extending from one part of the perimeter portion to another part of the perimeter portion to define at least first and second apertures, a first plurality of fingers extending along parallel axes from the perimeter portion into the first aperture, and a second plurality of fingers extending along parallel axes from the perimeter portion into the second aperture.Type: GrantFiled: July 29, 2005Date of Patent: August 5, 2008Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Patent number: 6925877Abstract: A micromachined device has a body suspended over a substrate and movable in a plane relative to the substrate. The body has a perimeter portion, a first cross-piece portion extending from one part of the perimeter portion to another part of the perimeter portion to define at least first and second apertures, a first plurality of fingers extending along parallel axes from the perimeter portion into the first aperture, and a second plurality of fingers extending along parallel axes from the perimeter portion into the second aperture.Type: GrantFiled: April 1, 2003Date of Patent: August 9, 2005Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Patent number: 6684698Abstract: A micromachined device has a body suspended over a substrate and movable in a plane relative to the substrate. The body has a perimeter portion, a first cross-piece portion extending from one part of the perimeter portion to another part of the perimeter portion to define at least first and second apertures, a first plurality of fingers extending along parallel axes from the perimeter portion into the first aperture, and a second plurality of fingers extending along parallel axes from the perimeter portion into the second aperture.Type: GrantFiled: November 14, 2002Date of Patent: February 3, 2004Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Publication number: 20030200806Abstract: A micromachined device has a body suspended over a substrate and movable in a plane relative to the substrate. The body has a perimeter portion, a first cross-piece portion extending from one part of the perimeter portion to another part of the perimeter portion to define at least first and second apertures, a first plurality of fingers extending along parallel axes from the perimeter portion into the first aperture, and a second plurality of fingers extending along parallel axes from the perimeter portion into the second aperture.Type: ApplicationFiled: April 1, 2003Publication date: October 30, 2003Applicant: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Publication number: 20030056589Abstract: A micromachined device has a body suspended over a substrate and movable in a plane relative to the substrate. The body has a perimeter portion, a first cross-piece portion extending from one part of the perimeter portion to another part of the perimeter portion to define at least first and second apertures, a first plurality of fingers extending along parallel axes from the perimeter portion into the first aperture, and a second plurality of fingers extending along parallel axes from the perimeter portion into the second aperture.Type: ApplicationFiled: November 14, 2002Publication date: March 27, 2003Applicant: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Patent number: 6505512Abstract: A micromachined gyroscope has first and second coplanar bodies suspended over a substrate and movable in their plane relative to the substrate. The first body is dithered along a dither axis and is movable relative to the second body on the dither axis, but is rigidly connected for movement along an axis transverse to the dither axis. The second body is anchored so that it is substantially inhibited from moving along the dither axis, but can move with the first body along the transverse axis. The gyro has stop members and an anti-levitation system for preventing failure.Type: GrantFiled: December 17, 2001Date of Patent: January 14, 2003Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Patent number: 6505511Abstract: A micromachined gyroscope has first and second coplanar bodies suspended over a substrate and movable in their plane relative to the substrate. The first body is dithered along a dither axis and is movable relative to the second body on the dither axis, but is rigidly connected for movement along an axis transverse to the dither axis. The second body is anchored so that it is substantially inhibited from moving along the dither axis, but can move with the first body along the transverse axis. The gyro has stop members and an anti-levitation system for preventing failure.Type: GrantFiled: August 25, 2000Date of Patent: January 14, 2003Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Patent number: 6487908Abstract: A micromachined device has a first body suspended over a substrate in a plane parallel to the substrate and movable in the plane in a first direction relative to the substrate. A driver moves the first body in the first direction. A stop member, anchored to the substrate, limits motion of the body in the plane in a direction perpendicular to the first direction, and in a direction orthogonal to the plane and away from the substrate.Type: GrantFiled: December 17, 2001Date of Patent: December 3, 2002Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Patent number: 6481284Abstract: A micromachined device has first and second sets of interdigitating fingers movable on a plane parallel to a substrate. A first group of conductive members is formed on the substrate and is at the same DC voltage as a first group of fingers. A second group of conductive members is formed on the substrate and is electrically coupled to the second group of fingers. The conductive members help to prevent one group of fingers from levitating with respect to others.Type: GrantFiled: December 17, 2001Date of Patent: November 19, 2002Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Publication number: 20020046605Abstract: A micromachined gyroscope has first and second coplanar bodies suspended over a substrate and movable in their plane relative to the substrate. The first body is dithered along a dither axis and is movable relative to the second body on the dither axis, but is rigidly connected for movement along an axis transverse to the dither axis. The second body is anchored so that it is substantially inhibited from moving along the dither axis, but can move with the first body along the transverse axis. The gyro has stop members and an anti-levitation system for preventing failure.Type: ApplicationFiled: December 17, 2001Publication date: April 25, 2002Inventors: John A. Geen, Donald W. Carow
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Publication number: 20020046602Abstract: A micromachined gyroscope has first and second coplanar bodies suspended over a substrate and movable in their plane relative to the substrate. The first body is dithered along a dither axis and is movable relative to the second body on the dither axis, but is rigidly connected for movement along an axis transverse to the dither axis. The second body is anchored so that it is substantially inhibited from moving along the dither axis, but can move with the first body along the transverse axis. The gyro has stop members and an anti-levitation system for preventing failure.Type: ApplicationFiled: December 17, 2001Publication date: April 25, 2002Inventors: John A. Geen, Donald W. Carow
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Publication number: 20020046603Abstract: A micromachined gyroscope has first and second coplanar bodies suspended over a substrate and movable in their plane relative to the substrate. The first body is dithered along a dither axis and is movable relative to the second body on the dither axis, but is rigidly connected for movement along an axis transverse to the dither axis. The second body is anchored so that it is substantially inhibited from moving along the dither axis, but can move with the first body along the transverse axis. The gyro has stop members and an anti-levitation system for preventing failure.Type: ApplicationFiled: December 17, 2001Publication date: April 25, 2002Inventors: John A. Geen, Donald W. Carow
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Patent number: 6122961Abstract: A micromachined gyroscope has first and second coplanar bodies suspended over a substrate and movable in their plane relative to the substrate. The first body is dithered along a dither axis and is movable relative to the second body on the dither axis, but is rigidly connected for movement along an axis transverse to the dither axis. The second body is anchored so that it is substantially inhibited from moving along the dither axis, but can move with the first body along the transverse axis. The gyro has stop members and an anti-levitation system for preventing failure.Type: GrantFiled: September 2, 1997Date of Patent: September 26, 2000Assignee: Analog Devices, Inc.Inventors: John A. Geen, Donald W. Carow
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Patent number: 4655096Abstract: A flexure mount assembly particularly adapted for use in a dynamically tuned two-degree-of-freedom gyroscope to provide a universal coupling between a rotor element and a drive shaft. The mount features a substantially planar "spider" member normally oriented transversely to the spin axis of the rotor. The spider has four webs, each web extending radially from an inner central area associated with an inner gimbal ring to an outer annular area. The outer annular area is associated with an outer ring which is divided into four independent sectors.Each web has two sections and each section has the shape of two parabolas which intersect at their vertices. A central aperture roughly elliptical in shape is thus formed in each web. At both ends of each aperture, narrow radial slots are formed. Two mutually perpendicular "vertical" or cross flexure members each have key portions that extend in planes parallel to the spin axis through the radial slots.Type: GrantFiled: August 31, 1984Date of Patent: April 7, 1987Assignee: Northrop CorporationInventors: Robert O. Westhaver, Donald W. Carow, Frank R. Archibald
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Patent number: 4259641Abstract: Circuit for use in the rectification and detection of alternating electrical signals. The circuit employs a feedback amplifier in combination with a non-linear rectifier element to provide an output signal which has a linear relationship to the input signal notwithstanding the non-linear characteristic of the rectifier element. In some embodiments, the circuit is also capable of power gain and/or frequency selectivity.Type: GrantFiled: December 11, 1978Date of Patent: March 31, 1981Inventor: Donald W. Carow