Patents by Inventor LeRoy Baldwin

LeRoy Baldwin 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).

  • Publication number: 20050074267
    Abstract: A method of controlling the velocity of a copy substrate in an electrophotographic reproduction machine which includes a substrate registration system for transporting and registering the substrate and a toner image traveling to a toner image transfer point at a transfer velocity. The method includes decelerating the substrate from a process velocity to a low velocity, where the transfer velocity is greater than the low velocity and less than the process velocity, registering the substrate via the substrate registration system, and accelerating the substrate to the transfer velocity for image transfer.
    Type: Application
    Filed: October 6, 2003
    Publication date: April 7, 2005
    Inventors: Stephen Demchock, LeRoy Baldwin
  • Patent number: 5101961
    Abstract: A feed screw for use in a rectangular bin outlet permits uniform feed from the bin along a length of the screw. This is achieved with a screw of uniform pitch on a shaft comprising a plurality of coaxial and contiguous cylindrical sections having progressively decreasing diameters dimensioned so that the differences in volume capacity between each pair of contiguous sections are equal over such length.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: April 7, 1992
    Assignee: Jenike & Johanson, Inc.
    Inventors: K. Eric Bengtson, E. LeRoy Baldwin
  • Patent number: 4003742
    Abstract: A system employing at least one separation roller continuously contacting the outside surface of a web and tracked to move in a fixed approximately elliptical path, for compensating for web motion during separation of the web from another surface to enable a bead of accumulated material built up at the line of contact between the web and the other surface to pass therebetween without changing the web velocity. During the separation period, the advancing velocity of at least one surface is reduced so that at least one surface is advanced at a slower rate than its rate prior to separation, or stopped. In a preferred embodiment, the system is employed in photoelectrophoretic imaging to bypass a bead of imaging suspension built up at the imaging nip during separation of two webs immediately after completion of imaging to thereby permit dissipation or passage of the liquid bead without changing the advancing web velocity by reason of the separation operation.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: January 18, 1977
    Assignee: Xerox Corporation
    Inventors: Earl V. Jackson, Roger G. Teumer, LeRoy Baldwin
  • Patent number: 3989365
    Abstract: A system for compensating for motion during separation of a web from another surface to enable a bead of accumulated material built up at the line of contact between the web and the other surface to pass therebetween without changing the web velocity. In a preferred embodiment, the system is employed in photoelectrophoretic imaging to bypass a bead of imaging suspension built up at the imaging nip during separation of two webs immediately after completion of imaging to thereby permit dissipation or passage of the liquid bead without changing the advancing web velocity.
    Type: Grant
    Filed: June 4, 1974
    Date of Patent: November 2, 1976
    Assignee: Xerox Corporation
    Inventors: Roger G. Teumer, Earl V. Jackson, LeRoy Baldwin
  • Patent number: 3950088
    Abstract: A system employing at least one separation roller continuously contacting the outside surface of a web and tracked to move in a fixed approximately elliptical path, for compensating for web motion during separation of the web from another surface to enable a bead of accumulated material built up at the line of contact between the web and the other surface to pass therebetween without changing the web velocity. During the separation period, the advancing velocity of at least one surface is reduced so that at least one surface is advanced at a slower rate than its rate prior to separation, or stopped. In a preferred embodiment, the system is employed in photoelectrophoretic imaging to bypass a bead of imaging suspension built up at the imaging nip during separation of two webs immediately after completion of imaging to thereby permit dissipation or passage of the liquid bead without changing the advancing web velocity by reason of the separation operation.
    Type: Grant
    Filed: June 4, 1974
    Date of Patent: April 13, 1976
    Assignee: Xerox Corporation
    Inventors: Earl V. Jackson, Roger G. Teumer, LeRoy Baldwin