Patents by Inventor S. Warren Lohr
S. Warren Lohr 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: 7530675Abstract: The present application is directed to piezoelectric actuator devices. One embodiment of a piezoelectric actuator comprises a chamber diaphragm having a major surface. A piezoelectric transducer is positioned on the major surface of the chamber diaphragm. The piezoelectric transducer has a major surface having a first dimension which is smaller than a corresponding second dimension of the major surface of the chamber diaphragm, so that the piezoelectric transducer underlaps the chamber diaphragm. The underlap ratio of the first dimension to the second dimension ranges from about 0.70 to about 0.99.Type: GrantFiled: July 20, 2006Date of Patent: May 12, 2009Assignee: Xerox CorporationInventors: Gerald A. Domoto, Elias Panides, S. Warren Lohr, Terrance L. Stephens, Nicholas P. Kladias
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Publication number: 20080018714Abstract: The present application is directed to piezoelectric actuator devices. One embodiment of a piezoelectric actuator comprises a chamber diaphragm having a major surface. A piezoelectric transducer is positioned on the major surface of the chamber diaphragm. The piezoelectric transducer has a major surface having a first dimension which is smaller than a corresponding second dimension of the major surface of the chamber diaphragm, so that the piezoelectric transducer underlaps the chamber diaphragm. The underlap ratio of the first dimension to the second dimension ranges from about 0.70 to about 0.99.Type: ApplicationFiled: July 20, 2006Publication date: January 24, 2008Inventors: Gerald A. Domoto, Elias Panides, S. Warren Lohr, Terrance L. Stephens, Nicholas P. Kladias
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Publication number: 20040245711Abstract: The transporting of flimsy print media sheets having curled sheet edges being fed from a fuser or other input onto a vacuum sheet transport belt system is provided with improved acquisition by simultaneously blowing the upper surface of the sheet's curled lead edge area down towards the vacuum belt transport with a positive pressure airflow while the vacuum sheet transport is attracting the sheet with its an underlying vacuum manifold airflow. Both the vacuum manifold airflow and the positive pressure airflow may be respectively provided solely by the air intake and the air exhaust from a single blower. The positive pressure airflow may be provided from a manifold extending transversely over at least the upstream end of the vacuum belt transport, spaced therefrom, and feeding air to one or more air jets.Type: ApplicationFiled: June 6, 2003Publication date: December 9, 2004Applicant: Xerox CorporationInventors: Gerald A. Domoto, S. Warren Lohr, Elias Panides
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Patent number: 6827435Abstract: A dryer assembly for drying a liquid ink image formed on a substrate comprising a housing defining a portion of a sheet moving path; a plenum positioned within the housing, the plenum including air flow and outlet means contiguous to the plenum permitting forced air to exit the plenum, the outlet being in the form of a plurality of moving openings adapted to direct flowing air through the openings to the liquid image, the openings moving relative to the image; and a substrate transport device for moving the substrate carrying the liquid ink image on a front side thereof through the housing and under the plurality of moving openings. The dryer assembly has particular use in an ink jet printing system.Type: GrantFiled: January 7, 2002Date of Patent: December 7, 2004Assignee: Xerox CorporationInventors: Gerald A. Domoto, Elias Panides, S. Warren Lohr, Roger Leighton, Dawn Api, Narayan V. Deshpande, Andrew W. Hays
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Patent number: 6799844Abstract: A high shear ball check valve device is provided and is suitable for use in a liquid ink image producing machine to quickly and precisely control flow of liquid ink. The high shear ball check valve device includes a valve housing defining a valve chamber. The valve chamber has a desired cross-dimension, an inlet end, and an outlet end. The high shear ball check valve device also includes an inlet member that is connected to the inlet end of the valve housing and has an inlet opening and a ball seat and seal portion surrounding the inlet opening. The ball seat and seal portion has a desired first durometer hardness value. The high shear ball check valve device next includes a valve ball having a desired diameter and being located movably within the valve chamber, and an outlet opening located at the outlet end of the valve chamber.Type: GrantFiled: December 16, 2002Date of Patent: October 5, 2004Assignee: Xerox CorporationInventors: Roger Leighton, S. Warren Lohr
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Publication number: 20040114000Abstract: A high shear ball check valve device is provided and is suitable for use in a liquid ink image producing machine to quickly and precisely control flow of liquid ink. The high shear ball check valve device includes a valve housing defining a valve chamber. The valve chamber has a desired cross-dimension, an inlet end, and an outlet end. The high shear ball check valve device also includes an inlet member that is connected to the inlet end of the valve housing and has an inlet opening and a ball seat and seal portion surrounding the inlet opening. The ball seat and seal portion has a desired first durometer hardness value. The high shear ball check valve device next includes a valve ball having a desired diameter and being located movably within the valve chamber, and an outlet opening located at the outlet end of the valve chamber.Type: ApplicationFiled: December 16, 2002Publication date: June 17, 2004Applicant: Xerox CorporationInventors: Roger Leighton, S. Warren Lohr
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Publication number: 20040046850Abstract: A dryer assembly for drying a liquid ink image formed on a substrate comprising a housing defining a portion of a sheet moving path; a plenum positioned within the housing, the plenum including air flow and outlet means contiguous to the plenum permitting forced air to exit the plenum, the outlet being in the form of a plurality of moving openings adapted to direct flowing air through the openings to the liquid image, the openings moving relative to the image; and a substrate transport device for moving the substrate carrying the liquid ink image on a front side thereof through the housing and under the plurality of moving openings. An ink jet printing machine for printing a liquid ink image on a sheet of paper moving along a sheet path through a printing zone therein, the ink jet printing machine comprises a frame; a printhead mounted to said frame and containing liquid ink for depositing image-wise onto the sheet of paper to form a liquid ink image.Type: ApplicationFiled: January 7, 2002Publication date: March 11, 2004Inventors: Gerald A. Domoto, Elias Panides, S. Warren Lohr, Roger Leighton, Dawn Api, Narayan V. Deshpande, Andrew W. Hays
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Patent number: 6463674Abstract: A dryer uses a two-phase drying system having a brief water condensation interval, followed by impinging parallel laminar recirculating hot air jets which impinge on wet ink to increase the copy rate of inkjet printing and to increase the quality of the printed image.Type: GrantFiled: November 27, 2000Date of Patent: October 15, 2002Assignee: Xerox CorporationInventors: John J. Meyers, Roger G. Leighton, Dawn M. Api, Gerald A. Domoto, Elias Panides, Narayan V. Deshpande, Andrew W. Hays, S. Warren Lohr, Thomas N. Taylor
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Patent number: 4313599Abstract: An automatic document handler adapted to receive a stack of documents to be copied for feeding the documents seriatim to the platen of a copy machine and returning the copied documents to the stack. An air floation stack tray is provided to support the document stack, striations formed in the tray encourage laminar air flow thereover for improved air floation of the stack.Type: GrantFiled: October 3, 1979Date of Patent: February 2, 1982Assignee: Xerox CorporationInventor: S. Warren Lohr