Patents by Inventor David E. Lawson
David E. Lawson 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: 10126540Abstract: A method of focusing a telecentric imaging system (30), particularly as a part of a measuring machine (10) includes measuring an image of a feature (25) of an object (24) through the telecentric imaging system (30) in a telecentric operating mode and measuring an image of the feature (25) of the object (24) through the telecentric imaging system (30) in a non-telecentric operating mode. A value is acquired characterizing a function by which the size of the imaged feature varies in the non-telecentric mode with the relative displacement of the object (24) through the depth of field (D). The measures of the image of the feature (25) of the object (24) in the telecentric and non-telecentric modes are related to each other and to the acquired value as an estimate of a relative displacement of the object (24) from the best focus position.Type: GrantFiled: October 21, 2016Date of Patent: November 13, 2018Assignee: Quality Vision International, Inc.Inventors: David E. Lawson, Stephanie M. Bloch
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Publication number: 20170168282Abstract: A method of focusing a telecentric imaging system (30), particularly as a part of a measuring machine (10) includes measuring an image of a feature (25) of an object (24) through the telecentric imaging system (30) in a telecentric operating mode and measuring an image of the feature (25) of the object (24) through the telecentric imaging system (30) in a non-telecentric operating mode. A value is acquired characterizing a function by which the size of the imaged feature varies in the non-telecentric mode with the relative displacement of the object (24) through the depth of field (D). The measures of the image of the feature (25) of the object (24) in the telecentric and non-telecentric modes are related to each other and to the acquired value as an estimate of a relative displacement of the object (24) from the best focus position.Type: ApplicationFiled: October 21, 2016Publication date: June 15, 2017Inventors: David E. Lawson, Stephanie M. Bloch
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Patent number: 9009985Abstract: A probe deployment mechanism of a coordinate measuring machine provides for extending and retracting a probe. The probe is displaceable with respect to the actuator body connected to the measuring machine. A locator coupling secures the probe to the actuator body at the extended position for taking measurements. A drive coupled to the probe displaces the probe between the extended and retracted positions but at the extended position, the drive is releasable from the probe for kinetically isolating the locator coupling.Type: GrantFiled: April 30, 2013Date of Patent: April 21, 2015Assignee: Quality Vision International, Inc.Inventors: William E. Stevens, Jason Patti, David E. Lawson
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Publication number: 20140317941Abstract: A probe deployment mechanism of a coordinate measuring machine provides for extending and retracting a probe. The probe is displaceable with respect to the actuator body connected to the measuring machine. A locator coupling secures the probe to the actuator body at the extended position for taking measurements. A drive coupled to the probe displaces the probe between the extended and retracted positions but at the extended position, the drive is releasable from the probe for kinetically isolating the locator coupling.Type: ApplicationFiled: April 30, 2013Publication date: October 30, 2014Applicant: Quality Vision International, Inc.Inventors: Jason Patti, David E. Lawson
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Patent number: 8322888Abstract: An illumination system shares portions of an objective of an optical inspection system. A plurality of beam-shaping optics collects light from a plurality of effective light sources and directs the light through a portion of the objective for illuminating an object under inspection. The objective includes a front relay lens, a rear relay lens, and an objective stop disposed between the front and rear relay lenses for collecting light scattered from the object and forming an image of the object with the collected light. The beam-shaping optics, which surround the objective stop, are arranged together with the associated effective light sources for non-uniformly distributing light within a range of angles required for illuminating the object.Type: GrantFiled: June 25, 2012Date of Patent: December 4, 2012Assignee: Quality Vision International, Inc.Inventors: Stephanie M. Bloch, David E. Lawson
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Patent number: 8316728Abstract: An actuator for selectively extending and retracting a probe in a measuring instrument comprises an actuator body, a carriage having a first aperture slidably attached to the body, and a second aperture receiving a probe holder having a probe. The first aperture of the carriage, which surrounds the actuator body, includes a first plurality of magnets disposed around an inner circumference of the aperture. The actuator body includes a lead screw, a round lead screw nut mated with the lead screw, and a second plurality of magnets arranged on a periphery of the lead screw nut, generally aligned with the first plurality of magnets. The magnets are arranged so that the carriage may be displaced with respect to the actuator body a sufficient amount that the magnets do not significantly restrain the further movement of the carriage.Type: GrantFiled: November 20, 2009Date of Patent: November 27, 2012Assignee: Quality Vision International, Inc.Inventors: David E. Lawson, William E. Stevens, Jr.
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Publication number: 20120262707Abstract: An illumination system shares portions of an objective of an optical inspection system. A plurality of beam-shaping optics collects light from a plurality of effective light sources and directs the light through a portion of the objective for illuminating an object under inspection. The objective includes a front relay lens, a rear relay lens, and an objective stop disposed between the front and rear relay lenses for collecting light scattered from the object and forming an image of the object with the collected light. The beam-shaping optics, which surround the objective stop, are arranged together with the associated effective light sources for non-uniformly distributing light within a range of angles required for illuminating the object.Type: ApplicationFiled: June 25, 2012Publication date: October 18, 2012Applicant: Quality Vision International, Inc.Inventors: Stephanie Bloch, David E. Lawson
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Patent number: 8248591Abstract: An illumination system shares portions of an objective of an optical inspection system. A plurality of beam-shaping optics collects light from a plurality of effective light sources and directs the light through a portion of the objective for illuminating an object under inspection. The objective includes a front relay lens, a rear relay lens, and an objective stop disposed between the front and rear relay lenses for collecting light scattered from the object and forming an image of the object with the collected light. The beam-shaping optics, which surround the objective stop, are arranged together with the associated effective light sources for non-uniformly distributing light within a range of angles required for illuminating the object.Type: GrantFiled: November 18, 2010Date of Patent: August 21, 2012Assignee: Quality Vision International, Inc.Inventors: Stephanie M. Bloch, David E. Lawson
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Publication number: 20120127468Abstract: An illumination system shares portions of an objective of an optical inspection system. A plurality of beam-shaping optics collects light from a plurality of effective light sources and directs the light through a portion of the objective for illuminating an object under inspection. The objective includes a front relay lens, a rear relay lens, and an objective stop disposed between the front and rear relay lenses for collecting light scattered from the object and forming an image of the object with the collected light. The beam-shaping optics, which surround the objective stop, are arranged together with the associated effective light sources for non-uniformly distributing light within a range of angles required for illuminating the object.Type: ApplicationFiled: November 18, 2010Publication date: May 24, 2012Applicant: Quality Vision International, Inc.Inventors: Stephanie Bloch, David E. Lawson
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Publication number: 20110120240Abstract: An actuator for selectively extending and retracting a probe in a measuring instrument comprises an actuator body, a carriage having a first aperture slidably attached to the body, and a second aperture receiving a probe holder having a probe. The first aperture of the carriage, which surrounds the actuator body, includes a first plurality of magnets disposed around an inner circumference of the aperture. The actuator body includes a lead screw, a round lead screw nut mated with the lead screw, and a second plurality of magnets arranged on a periphery of the lead screw nut, generally aligned with the first plurality of magnets. The magnets are arranged so that the carriage may be displaced with respect to the actuator body a sufficient amount that the magnets do not significantly restrain the further movement of the carriage.Type: ApplicationFiled: November 20, 2009Publication date: May 26, 2011Applicant: QUALITY VISION INTERNATIONAL, INC.Inventors: David E. Lawson, William E. Stevens, JR.
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Patent number: 7553115Abstract: A machine for processing gears, such as by testing and lapping, which can accommodate a wide range of gear pair shaft angles (less than, equal to, and greater than ninety degrees) while providing improved machine stiffness and an enhanced arrangement of machine elements.Type: GrantFiled: September 6, 2007Date of Patent: June 30, 2009Assignee: The Gleason WorksInventors: William D. McGlasson, Daniel D. Wood, David E. Lawson
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Publication number: 20080056837Abstract: A machine for processing gears, such as by testing and lapping, which can accommodate a wide range of gear pair shaft angles (less than, equal to, and greater than ninety degrees) while providing improved machine stiffness and an enhanced arrangement of machine elements.Type: ApplicationFiled: September 6, 2007Publication date: March 6, 2008Inventors: William D. McGlasson, Daniel D. Wood, David E. Lawson
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Patent number: 4200359Abstract: A mirror assembly for a vehicle. A small, flat mirror is mounted through use of a wedge-shaped adhesive block to the inside portion of a conventional side view mirror. The block positions the small mirror at an angle of about 15.degree. to 20.degree. with respect to the plane of the side view mirror to thereby eliminate the "blind spot" to the side and the rear of the vehicle.Type: GrantFiled: November 24, 1978Date of Patent: April 29, 1980Inventor: David E. Lawson
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Patent number: 4123488Abstract: A composite molded article composed of a backing layer of fiber-reinforced thermosetting resin and an outer layer of a thermoplastic resin which is mechanically interlocked to the backing layer through the fiber reinforcement. In fabrication, a layer of fibrous material impregnated with an uncured thermosetting resin is placed in a mold and a molten thermoplastic resin is injected into the mold. The heat of the thermoplastic resin serves to cure the thermosetting resin and the resulting composite article has a rigid, high strength backing formed of the reinforced thermosetting resin and has a smooth thermoplastic outer surface which is receptive to surface finishes.Type: GrantFiled: September 6, 1977Date of Patent: October 31, 1978Inventor: David E. Lawson