Patents by Inventor James E. Williams

James E. Williams 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).

  • Patent number: 5410395
    Abstract: In a highlight color imaging method and apparatus, the charging level of a scorotron used for charge neutralizing an already developed image is controlled by using the bias voltage of a second developer housing as a reference voltage for the the grid of the scorotron. The bias voltage applied to the scorotron is offset a predetermined amount from the bias voltage of the second developer housing.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: April 25, 1995
    Assignee: Xerox Corporation
    Inventors: Delmer G. Parker, James E. Williams
  • Patent number: 5376124
    Abstract: A spacer to be used with femoral hip prostheses. The spacer is placed under a existing collar of a femoral hip prosthesis and cemented or tied in place or both. The spacer comprises a U-shaped segment adapted to fit under a medial collar and partially enclose part of a proximal portion of the stem of a hip prosthesis. Spacer plugs are provided to offset the spacer slightly and provide a space which is filled with bone cement (PMMA), securely attaching the spacer to the prosthesis. A distal ledge which lies adjacent the proximal body of the prosthesis keeps the cement enclosed between the stem and the spacer. An area of porous coating is provided distally. A peripheral groove is also provided.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: December 27, 1994
    Assignee: Intermedics Orthopedics, Inc.
    Inventors: Kenneth A. Gustke, Kenneth J. Gardner, James E. Williams
  • Patent number: 5258035
    Abstract: A prosthesis having a proximal portion of a stem formed as a wedge having opposed tapers such that prostheses can be thrust into a medullary canal and achieve fixation without unduly stressing the cortical bone remaining in the femur. Ribs secure the prosthesis against medial-lateral motion. Simultaneously, a degree of flexibility is provided in an anterior-posterior direction. A slotted distal portion of the stem is flared to enhance fixation distally.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: November 2, 1993
    Assignee: Intermedics Orthopedics, Inc.
    Inventors: Aaron A. Hofmann, James E. Williams
  • Patent number: 5241358
    Abstract: The operating latitude of the tri-level xerographic process is improved by replacing the standard DC bias that is applied to one or both of the developer housings in conventional tri-level imaging with a chopped DC (CDC) developer bias. Chopped DC biasing is the alternate application of two discrete bias voltages to a developer strucrute in a periodic fashion at a given frequency, with the period of each cycle divided up between the two bias levels at a duty cycle of from 5-10% or 90-95% depending upon which of the two developer structures is being biased. In the case of the DAD developer structure the duty cycle of higher of the two biases is 5-10% and in the case of a CAD developer structure the duty cycle of higher of the two biases is 90-95%.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: August 31, 1993
    Assignee: Xerox Corporation
    Inventors: Richard P. Germain, James E. Williams
  • Patent number: 5241359
    Abstract: Image creation apparatus operable in a tri-level highlight color imaging or a black monochrome mode. The developer structures are biased in the tri-level mode using a chopped DC bias while in the monochrome black mode only the black developer structure is biased using a standard monochrome bias.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: August 31, 1993
    Assignee: Xerox Corporation
    Inventor: James E. Williams
  • Patent number: 5144087
    Abstract: A process for preparing dibromonitro-alcohols, and mixtures thereof with bromonitro-alcohols, is disclosed in which dibromonitromethane, and optionally bromonitroethane, is reacted with a C.sub.1 -C.sub.3 aldehyde in aqueous solution at an acid pH, preferably between about 4.0 and about 7.0. An aqueous solution of the aldehyde is prepared and the pH adjusted to the desired acid range by addition of sodium bicarbonate, and the dibromonitromethane, which may include bromonitromethane, is added thereto. The dibromonitro-alcohol product is isolated as a separate phase from the reaction mixture.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: September 1, 1992
    Assignee: Great Lakes Chemical Corp.
    Inventors: James E. Williams, Scott Thornburgh
  • Patent number: 5080988
    Abstract: The operating latitude of the tri-level xerographic process is improved by replacing the standard DC bias that is applied to one or both of the developer housings in conventional tri-level imaging with a chopped DC (CDC) developer bias. Chopped DC biasing is the alternate application of two discrete bias voltages to a developer stucture in a periodic fashion at a given frequency, with the period of each cycle divided up between the two bias levels at a duty cycle of from 5%-10% or 90%-95% depending upon which of the two developer structures is being biased. In the case of the DAD developer structure the duty cycle of higher of the two biases is 5%-10% and in case of a CAD developer structure the duty cycle of higher of the two biases is 90%-95%.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: January 14, 1992
    Assignee: Xerox Corporation
    Inventors: Richard P. Germain, James E. Williams
  • Patent number: 5079114
    Abstract: Image creation apparatus operable in a tri-level highlight color imaging or a black monochrome mode. The developer structures are biased in the tri-level mode using a chopped DC bias while in the monochrome black mode only the black developer structure is biased using a standard monochrome bias.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: January 7, 1992
    Assignee: Xerox Corporation
    Inventor: James E. Williams
  • Patent number: 5075510
    Abstract: A process for preparing bromonitro-alcohols is disclosed in which bromonitromethane is reacted with a C.sub.1 -C.sub.3 aldehyde in aqueous solution at an acid pH, preferably between about 4.0 and about 7.0. An aqueous solution of the aldehyde is prepared and the pH adjusted to the desired acid range by addition of sodium bicarbonate, and the bromonitromethane is added thereto. The bromonitro-alcohol product is isolated as a separate phase from the reaction mixture.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: December 24, 1991
    Assignee: Great Lakes Chemical Corporation
    Inventors: James E. Williams, Scott Thornburgh
  • Patent number: 5038177
    Abstract: Balanced, efficient corona transfer for both the charged area image and the discharged area image of a developed tri-level image is obtained by the provision of a selective pre-transfer charge corona device in combination with a pre-transfer discharge lamp. While improved transfer over prior art devices is obtained using a pre-transfer lamp prior to pre-transfer charging the preferred embodiment of the invention utilizes a pre-transfer lamp before and in coincidence with pre-transfer charging.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: August 6, 1991
    Assignee: Xerox Corporation
    Inventors: Delmer G. Parker, William M. Allen, Jr., Gerald M. Fletcher, James E. Williams
  • Patent number: 5012757
    Abstract: Automatic horn warning signal apparatus for use on boats is compact, unitary, self-contained, lightweight, drycell-battery-energized, is manually selectably actuated for automatically sounding any of nine predetermined patterns of warning horn signal sequences applicable to specified, recognized navigational procedures for marine craft. A small motor operates through a first speed-reducing, torque-increasing transmission for rotating a main cam shaft containing nine lobed cams each having a different configuration corresponding to the desired warning signal pattern to be sounded. A control lever is engageable with any of the nine cams for selecting the desired automatically sounded horn signal sequence. A second speed-reducing, torque-increasing transmission rotates a latching cam shaft at one-tenth the rate of the main cam shaft for operating a latch for enabling a pivot bar to serve as fulcrum for the control lever.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: May 7, 1991
    Inventor: James E. Williams
  • Patent number: 4984021
    Abstract: The prevention of photoreceptor edge development by a discharged image area development system is accomplished by the provison of a photoreceptor charging device which uniformly charges the photoreceptor across its entire width, including the edges thereof outside of the image areas. Thus, when the charged edge areas pass through a discharged-area development housing edge development is precluded. When discharged image area development is used in combination with subsequent charged-image area development as in the case of tri-level, highlight color imaging, photoreceptor edge development is precluded by discharging the edges subsequent to discharged-area development and prior to charged area development.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: January 8, 1991
    Assignee: Xerox Corporation
    Inventor: James E. Williams
  • Patent number: 4920024
    Abstract: The prevention of photoreceptor edge development by a discharge image area development system is accomplished by the provision of a photoreceptor charging device which uniformly charges the photoreceptor across its entire width, including the edges thereof outside of the image areas. Thus, when the charged edge areas pass through a discharged-area development housing edge development is precluded. When discharged image area development is used in combination with subsequent charged-image area development as in the case of tri-level, highlight color imaging, photoreceptor edge development is precluded by discharging the edges subsequent to discharged-area development and prior to charged area development.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: April 24, 1990
    Assignee: Xerox Corporation
    Inventor: James E. Williams
  • Patent number: 4881973
    Abstract: A process is described which improves the life of a silver recovery unit which employs finely divided iron and a minor amounts of a copper or cadmium salt therein by raising the pH of waste acidic photographic processing stream containing silver to be recovered. This pH increase may be accomplished using waste developer stream. An additional use of a chelating agent has been found to be beneficial.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: November 21, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James E. Williams
  • Patent number: 4854552
    Abstract: Apparatus for recovery of silver from spent, waste acidic silver halide photographic processing fluid, e.g., fixer solution, comprising passing the fluid through finely divided iron e.g., steel wool, contained in a vessel in the presence of a metal salt of copper or cadmium, e.g., copper(II)sulfate, copper chloride dihydrate, cadmium sulfate, etc. The ratio of iron to metal salt is 25 to 1 to 4 to 1.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: August 8, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: James E. Williams
  • Patent number: 4813624
    Abstract: A rotary food processing tool has an elongated upright hub rotatable about a vertical axis with sockets in its upper and lower ends. Each socket has inclined grooves, and the elongated hub is adapted to be driven from a motor drive unit mounted on top of the bowl having a drive shaft extending downwardly. The elongated hub carries blades extending outwardly from the axis for processing food near the bottom of the bowl. A spindle having a plurality of protrusions for mating with the inclined grooves in the upper hub socket is mounted for rotation on the drive shaft. A vertical stationary guide post extends upwardly from the bottom of the bowl. Upon actuation of the motor drive, the elongated hub is lifted upwardly by the screw action of the drive spindle in the upper socket of the hub, while the lower socket remains encircling the guide post for aligning and stabilizing rotation of the elevated hub.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: March 21, 1989
    Assignee: Cuisinarts, Inc.
    Inventor: James E. Williams
  • Patent number: 4740244
    Abstract: Process for recovery of silver from spent, waste acidic silver halide photographic processing fluid, e.g., fixer solution, comprising passing the fluid through finely divided iron, e.g., steel wool, contained in a vessel in the presence of a metal salt of copper or cadmium, e.g., copper(II)sulfate, copper chloride dihydrate, cadmium sulfate, etc. The ratio of iron to metal salt is 25 to 1 to 4 to 1. An apparatus for recovery of silver is also described.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: April 26, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James E. Williams
  • Patent number: 4740020
    Abstract: A cover is manually releasably locked to the base of a storage container for protecting the contents of the container from accidentally or inadvertently opening even on dropping. A forked member is mounted on the cover having tongues with eyelets extending downwardly therefrom which fit into a latch housing in the base which contains slots for receiving the eyelet tongues. A slidable actuator is movably mounted in the latch housing which housing includes a first and second latch which are adapted to engage the eyelets of the tongues of the stem when the cover is closed on the container.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: April 26, 1988
    Assignee: Cuisinarts, Inc.
    Inventor: James E. Williams
  • Patent number: 4733827
    Abstract: A rotary food processor tool storage container is provided for storing and protecting specially configured food processor tools and accessories, and more particularly, a metal blade, a dough blade, and a detachable stem for removable head disc-type tools. It includes an upstanding enclosed hollow base having an inclined support with first and second sloping side-by-side pockets separated by an upstanding partition with the first pocket adapted to store a metal blade rotary tool and the second pocket adapted to store a dough blade rotary food processing tool. The partition laterally separates the pockets and prevents the metal blade from coming into contact with the dough blade. The inclined support includes an elevated support positioned above the first and second pockets which has an open channel therein extending downwardly into the hollow base which is adapted to receive and support therein a detachable stem from a rotary food processing tool.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: March 29, 1988
    Assignee: Cuisinarts, Inc.
    Inventor: James E. Williams
  • Patent number: 4723719
    Abstract: An invertible/reversible tool for use in a rotary food processing appliance is provided for performing predetermined processing operations in a first position and other predetermined operations in a second upside down position in a working bowl, which bowl contains a drive shaft for rotating the tool about a vertical axis in the bowl. The tool has an elongated hub with first and second sockets positioned on opposite ends adapted to engage the drive shaft for rotating the elongated hub in different directions depending on which socket is engaging the drive. Raised ridge keyways extending vertically for at least more than half the length of the elongated hub are provided to provide a positive driving relationship between the elongated hub and an encircling blade hub which carries reversible blades extending outwardly relative to the axis of rotation from opposite sides of the blade hub.
    Type: Grant
    Filed: December 23, 1986
    Date of Patent: February 9, 1988
    Assignee: Cuisinarts, Inc.
    Inventor: James E. Williams