Patents by Inventor David F. Johnson
David F. Johnson 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: 20240116386Abstract: Utility vehicles include ground engaging members, a frame supported by the ground engaging members, a motor supported by the frame operably coupled to the ground engaging members, and a battery configured to provide electrical power to the motor. The battery may be removable and configured to be easily charged by outside power sources such as generators and external batteries. A charger may be configured to receive instructions to charge the battery using a specific charger operating characteristic. The vehicle may also include a variety of accessory ports configured to electrically couple to accessories that use AC or DC power.Type: ApplicationFiled: October 5, 2023Publication date: April 11, 2024Applicant: Polaris Industries Inc.Inventors: Yassin M. Kelay, David F. Buehler, Chiao George Liu, Aaron D. Deckard, Jacob Gerten, Benjamin R. Bauer, Akshay A. Biyani, Naval K. Agrawal, Kathryn L. Johnson, Austin A. Holt
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Patent number: 11912013Abstract: Ink-based digital printing systems useful for ink printing include a rotatable charge-retentive reimageable surface layer configured to receive a layer of fountain solution. The fountain solution is carried to the charge retentive surface by a fog or mist including fountain solution aerosol particles, dispersed gas particles, and charge directors that impart charge to the fountain solution aerosol particles. The charge-retentive reimageable surface may be charged to a uniform potential, and selectively discharged using an ROS according to image data to form an electrostatic latent image. The charged fountain solution adheres to portions of the charge-retentive reimageable surface according to the electrostatic latent image to form a fountain solution image thereon. The fountain solution image can be partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate.Type: GrantFiled: January 19, 2021Date of Patent: February 27, 2024Assignee: Xerox CorporationInventors: Kathryn F. Murphy, Thomas Wunderer, Anne Plochowietz, David K. Biegelsen, Joerg Martini, David Mathew Johnson, Palghat S. Ramesh
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Patent number: 8921810Abstract: Described is a portable dosimeter reader that is small in size and light in weight.Type: GrantFiled: April 7, 2014Date of Patent: December 30, 2014Assignee: Landauer, Inc.Inventors: R. Craig Yoder, Mark S. Akselrod, Kent J. Dillin, Vasiliy V. Fomenko, David F. Johnson, Yoshikazu Tatsumi, Tse-Min Lo
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Publication number: 20140217309Abstract: Described is a portable dosimeter reader that is small in size and light in weight.Type: ApplicationFiled: April 7, 2014Publication date: August 7, 2014Applicant: Landauer, Inc.Inventors: R. Craig YODER, Mark S. AKSELROD, Kent J. DILLIN, Vasiliy V. FOMENKO, David F. JOHNSON, Yoshikazu TATSUMI, Tse-Min LO
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Patent number: 8785887Abstract: Described is a portable dosimeter reader that is small in size and light in weight.Type: GrantFiled: August 28, 2013Date of Patent: July 22, 2014Assignee: Landauer, Inc.Inventors: R. Craig Yoder, Mark S. Akselrod, Kent J. Dillin, Vasiliy V. Fomenko, David F. Johnson, Yoshikazu Tatsumi, Tse-Min Lo
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Publication number: 20140183378Abstract: Described is a portable dosimeter reader that is small in size and light in weight.Type: ApplicationFiled: August 28, 2013Publication date: July 3, 2014Applicant: Landauer, Inc.Inventors: R. Craig YODER, Mark S. AKSELROD, Kent J. DILLIN, Vasiliy V. FOMENKO, David F. JOHNSON, Yoshikazu TATSUMI, Tse-Min LO
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Patent number: 8575572Abstract: A portable dosimeter reader device includes an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter sled; a sled slider that is driven by a sled slider motor to position in turn each of the one or more OSL sensors of the dosimeter sled at a reading position where the OSL reader reads each respective OSL sensor; a display for displaying information relating to reading the one or more OSL sensors; and a battery compartment for one or more batteries, wherein the OSL reader includes an LED light source, wherein the battery compartment is electrically connected to the OSL reader, the sled slider motor and the display, and wherein the one or more batteries provide all of the power required for operating the OSL reader, the sled slider motor and the display.Type: GrantFiled: March 13, 2013Date of Patent: November 5, 2013Assignee: Landauer, Inc.Inventors: R. Craig Yoder, Mark S. Akselrod, Kent J. Dillin, Vasiliy V. Fomenko, David F. Johnson, Yoshikazu Tatsumi, Tse-Min Lo
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Patent number: 8563948Abstract: Described is a portable dosimeter reader that is small in size and light in weight comprising an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter sled. The portable dosimeter may also include a sled slider that is driven by an engine to position in turn each of the one or more OSL sensors of the dosimeter sled at a reading position where the OSL reader reads each respective OSL sensor. A display may be provided for displaying information relating to reading the one or more OSL sensors. The portable dosimeter may also include a battery compartment for one or more batteries and a case enclosing the device.Type: GrantFiled: March 13, 2013Date of Patent: October 22, 2013Assignee: Landauer, Inc.Inventors: R. Craig Yoder, Mark S. Akselrod, Kent J. Dillin, Vasiliy V. Fomenko, David F. Johnson, Yoshikazu Tatsumi, Tse-Min Lo
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Patent number: 8552403Abstract: Described is a portable dosimeter reader device that is small in size and light in weight. The device comprises an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter and a dosimeter drawer slidably mounted in the device. The device further comprises an elevator carriage comprising a barrel with a barrel groove on an exterior side thereof, a loop retainer elevator including a tongue on an interior side thereof that travels in the barrel groove, a pinion gear mounted on the barrel, and a rack with rack teeth that engage pinion teeth of the pinion gear.Type: GrantFiled: April 8, 2011Date of Patent: October 8, 2013Assignee: Landauer, Inc.Inventors: R. Craig Yoder, Mark S. Akselrod, Kent J. Dillin, Vasiliy V. Fomenko, David F. Johnson, Yoshikazu Tatsumi, Tse-Min Lo
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Publication number: 20130200278Abstract: Described is a portable dosimeter reader that is small in size and light in weight.Type: ApplicationFiled: March 13, 2013Publication date: August 8, 2013Applicant: Landauer, Inc.Inventors: R. Craig YODER, Mark S. AKSELROD, Kent J. DILLIN, Vasiliy V. FOMENKO, David F. JOHNSON, Yoshikazu TATSUMI, Tse-Min LO
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Publication number: 20130193348Abstract: Described is a portable dosimeter reader that is small in size and light in weight.Type: ApplicationFiled: March 13, 2013Publication date: August 1, 2013Applicant: Landauer, Inc.Inventors: R. Craig YODER, Mark S. AKSELROD, Kent J. DILLIN, Vasiliy V. FOMENKO, David F. JOHNSON, Yoshikazu TATSUMI, Tse-Min LO
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Publication number: 20120018652Abstract: Described is a portable dosimeter reader that is small in size and light in weight.Type: ApplicationFiled: April 8, 2011Publication date: January 26, 2012Applicant: Landauer, Inc.Inventors: R. Craig Yoder, Mark S. Akselrod, Kent J. Dillin, Vasiliy V. Fomenko, David F. Johnson
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Patent number: 5623722Abstract: A document set compiler and eject apparatus including a belt transport system as well as an output roll system, wherein the belt and rolls of each respective system operate in conjunction with one another to provide smooth and effective transport of the document set from a compiler tray to an output tray. In particular, the output rolls, located downstream from the belt, are driven at a speed substantially greater than the speed of the transport belts for actively removing the document set from the belts to prevent damage to the trail edge thereof. The compiler tray also includes a retard roll system for maintaining the registration of the document set as it is transferred from the transport belts to the output rolls.Type: GrantFiled: June 1, 1995Date of Patent: April 22, 1997Assignee: Xerox CorporationInventors: Rodney L. Hawley, David F. Johnson, Edward T. Bloomer
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Patent number: 4448582Abstract: A textile fabric formed of synthetic fibrous material or blends with natural fibers to which dyestuffs have been applied is subjected to a thermosol heat treatment by directing the fabric supported on an air permeable conveyor through a heated oven while directing heated air downwardly through the fabric and through the underlying supporting conveyor and while at predetermined longitudinally spaced locations as the fabric travels through the oven directing heated air upwardly through the open mesh conveyor and into contact with the fabric so as to lift portions of the fabric from the conveyor to permit free shrinkage and bulking of the fabric while avoiding distortion of the fabric or obtaining an undesirable ironed surface appearance as would occur if the fabric were pinned to the conveyor. This method also achieves very rapid and efficient heat transfer to the fabric and thus avoids the extreme time and temperature conditions which result in harsh treatment of the fabric.Type: GrantFiled: February 1, 1982Date of Patent: May 15, 1984Assignee: American Artos CorporationInventor: David F. Johnson
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Patent number: 4157590Abstract: This specification discloses a multi digit binary adder embodied in programmable logic arrays (PLAs). The particular programmable logic array used here has a separate two bit decoder for receiving each like order pairs of digits A.sub.i, B.sub.i of two n digit binary numbers A.sub.0, A.sub.1....A.sub.n-1 and B.sub.0, B.sub.1....B.sub.n-1 plus a carry C.sub.in. The decoders generate an output signal called a min term on a different line for each of the four possible combinations A.sub.i B.sub.i, A.sub.i B.sub.i, A.sub.i B.sub.i and A.sub.i B.sub.i of the true and complement of each pair. The min terms from the decoders are fed to an array called the product term generator or AND array which generates product termsf.sub.p =f.sub.0 (A.sub.0,B.sub.0) f.sub.1 (A.sub.1,B.sub.1)....f.sub.n-1 (A.sub.n-1, B.sub.n-1) f.sub.n (C.sub.in)The product terms are fed to a second array called a sum of product term generator or OR array that sums product terms f.sub.p.Type: GrantFiled: January 3, 1978Date of Patent: June 5, 1979Assignee: International Business Machines CorporationInventors: Donald G. Grice, David F. Johnson, Arnold Weinberger
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Patent number: 4018328Abstract: A transfer shuttle is alternately moved in a forward motion and then a rearward motion by a rotary power drive. As the rotary power drive is rotated through an arc of 180.degree., a dog, coupled to the power drive, is accelerated and then decelerated before engaging the work piece transfer member, and then accelerated and decelerated after engaging the transfer member to complete its forward motion.Type: GrantFiled: October 28, 1975Date of Patent: April 19, 1977Assignee: Visi-Trol Engineering CompanyInventors: Lawrence A. Galarowic, Glenn B. Waineo, David F. Johnson