Patents by Inventor Donald J. Newman

Donald J. Newman 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: 5504477
    Abstract: A performer tracking system, and an associated method, for tracking movements of at least one performer upon a stage. A plurality of signal transmitters are positioned about the stage and transmit electromagnetic signals. Performers on the stage carry transponders which receive the electromagnetic signals and, responsive thereto, generate coded sound signals. Sound signal receivers positioned together with the signal transmitters receive the sound signals. A controller determines positions of the transponders and, hence, the performers carrying the transponders and causes spotlights to track the performers.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: April 2, 1996
    Assignee: Wybron, Inc.
    Inventors: Kenyon C. Whitright, Donald J. Newman, Kenneth R. Fasen
  • Patent number: 5449463
    Abstract: One aspect of the invention provides a method of preventing crude oil from becoming emulsified in desalter wash water. According to the method, the wash water is treated with an effective amount of a dispersion of a water-soluble cationic polymer.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: September 12, 1995
    Assignee: Nalco Chemical Company
    Inventors: Phillip L. Elliott, Michael L. Braden, Donald J. Newman
  • Patent number: 5306686
    Abstract: A negative-acting, photothermographic material having a first layer comprising an amine compound and a second layer comprising an amine-reactive dye which undergoes a visible change when in reactive association with the amine compound. The amine compound and the amine-sensitive dye are in non-reactive association at ambient and moderate temperatures, but at elevated temperatures the two components are able to interact to produce a visible change in the heated areas of the material. The materials are particularly suitable for the preparation of overhead projector transparencies.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ranjan C. Patel, John H. A. Stibbard, Darren Cooper, Terence W. Baldock, Donald J. Newman, John J. Stofko
  • Patent number: 4935820
    Abstract: Method and apparatus for producing a color image on a photosensitive medium having low sensitivity in which color separation image masks are sequentially generated in a smectic liquid crystal device which may be controlled by a computer and the photosensitive medium is exposed through the image mask. The separation image masks may be altered during exposure to compensate for uneven illumination and to achieve tonal scales.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: June 19, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ranjan C. Patel, John H. A. Stibbard, Ronald G. Tye, Donald J. Newman
  • Patent number: 4918953
    Abstract: A lock bolt mechanism includes a housing on which a lock bolt is mounted for movement between locked and unlocked terminal positions. An inside actuator is rotatably mounted on the housing and a first drive connection links the inside actuator to the lock bolt whereby the lock bolt is caused to move in response to rotation of the inside actuator. An outside actuator is linked to the lock bolt through a second drive connection and is rotatable in order to move the lock bolt. A gear train forms part of the second drive connection and that gear train includes at least one partial gear wheel having a segment thereof with no gear teeth. A second gear wheel in the train is adapted to engage with the partial gear. Rotation of the outside actuator causes the partial gear to engage the second gear and thereby cause the second drive connection to operate the lock bolt. However, when the inside actuator is rotated the second gear wheel is free to rotate out of engagement with the partial gear.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: April 24, 1990
    Assignee: Ogden Industries Pty. Ltd.
    Inventor: Donald J. Newman
  • Patent number: 4904519
    Abstract: Polymeric composition suitable for preparing an ink receptive coating for a recording sheet and the recording sheet formed therefrom. The composition comprises a hydrolyzed copolymer formed from vinyl amide monomer units and vinyl ester monomer units.The recording sheets of the invention can be imaged by means of pen plotters on ink jet printers that utilize either water-based inks or solvent based inks. The ink receptive coating formed from the polymeric composition of this invention is resistant to fingerprinting and inhibits clogging of pen tips.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: February 27, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald J. Newman
  • Patent number: 4724691
    Abstract: Mechanism for a lock bolt assembly of the kind including a housing, a bolt mounted on the housing for movement into and out of a strike engaging position, an actuator rotatably mounted on the housing, and a drive connection between the actuator and the bolt whereby operation of the actuator causes movement of the bolt. The drive connection includes an override clutch which can be caused to adopt either an engaged condition or a disengaged condition by operation of a key operated lock. In the engaged condition the actuator is drivably connected to the bolt, whereas in the disengaged condition that connection is broken. The clutch operates to resist rotation of the actuator when in the disengaged condition, but that resistance can be overcome by forced operation of the actuator after which the actuator can be rotated freely relative to other parts of the mechanism.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: February 16, 1988
    Assignee: Ogden Industries Pty. Ltd.
    Inventors: Donald J. Newman, John A. Christie
  • Patent number: 4719774
    Abstract: A deadbolt assembly of the kind in which a deadbolt is mounted on a housing for linear movement between inoperative and inoperative positions in which the deadbolt engages with and does not engage respectively, a strike. An actuator is rotatably mounted on the housing and is drivably connected to the actuator through a drive plate which rotates in response to operation of the actuator, and a drive pin is secured to the plate at a position radially outwards of the rotational axis of the plate. The pin locates within a non-circular hole provided in the deadbolt and reacts against edges of that hole to cause the deadbolt movement. The pin moves along an arcuate path between each of its two extreme positions, and at each of those positions the pin lies on a straight line which extends substantially parallel to the direction of movement of the deadbolt and which substantially intersects the rotational axis of the drive plate. Both the deadbolt and the strike can be made from steel or other strong metal.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: January 19, 1988
    Assignee: Ogden Industries Pty. Ltd.
    Inventors: Donald J. Newman, John A. Christie
  • Patent number: 4699409
    Abstract: Means for attaching a furniture plate to a side surface of a door including an elongate tension member which is secured at one end to the plate and projects laterally from a rear surface of that plate. The opposite end portion of the tension member has an upstanding lip and a camming surface of that lip faces towards the rear surface of the plate. A camming member is located within the door body and is movable along a path parallel to the door side surface, and actuating means which is accessible from the front edge of the door is operable to cause movement of the camming member. When the camming member is moved in one direction along the aforementioned path it engages with the lip camming surface so as to move the tension member in a direction such as to draw the furniture plate rear surface against the door side surface. A single camming member can engage and influence each of two tension members which extend into the door body from respective opposite sides of the door.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: October 13, 1987
    Assignee: Ogden Industries Pty. Ltd.
    Inventor: Donald J. Newman
  • Patent number: 4689975
    Abstract: A padlock of the kind having a body and a U-shaped shackle which projects above an upper end surface of the body. The shackle has a captured leg which is retained against separation from the body but which can move relative to the body to allow the shackle to adopt a locked or a released condition. Another leg of the shackle has an end portion which is located within the body and is clear of the body respectively in the locked and released conditions of the padlock. A shroud is formed integral with the body and extends upwards from the body upper end surface so as to completely protect the front of the shackle under both the locked and released conditions. The shroud has a rearwardly opening cavity which substantially contains the shackle when in the locked condition so that the shackle is exposed only at the rear of the padlock. The rear of the padlock is substantially flat, whereas the front has a convex curvature.
    Type: Grant
    Filed: August 5, 1986
    Date of Patent: September 1, 1987
    Assignee: Ogden Industries Pty. Ltd.
    Inventors: Gerald F. Dunphy, Donald J. Newman
  • Patent number: 4624119
    Abstract: A cylinder lock having a plurality of plate-like tumblers, each of which is carried by the lock barrel to rotate therewith and each being adapted to locate within a respective locking recess provided in the lock body and thereby hold the barrel against rotation relative to the body. The tumbler plates are movable laterally relative to the barrel axis so as to be capable of removal from their respective locking recesses and thereby free the barrel for rotation. A locking pin interconnects the tumbler plates so that they move in unison between their barrel locking and release positions, and a plurality of rotatable discs interacts with that pin to control its ability to move radially inwards and thereby free the tumbler plates from their locking recesses. Each disc has a peripheral notch which must be located adjacent the locking pin to allow the aforementioned radial inward movement.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: November 25, 1986
    Assignee: Ogden Industries Pty. Ltd.
    Inventors: Donald J. Newman, Gerald F. Dunphy
  • Patent number: 4512166
    Abstract: A lock of the cylinder type having a plurality of discs forming part of the barrel assembly and being rotatable relative to one another and to the body of the barrel assembly. The rotational axis of each disc is substantially coincident with the rotational axis of the complete barrel assembly and each disc has a keyway forming opening which contains that axis. Locking means such as a side locking bar is operative to hold the barrel assembly against rotation relative to the lock cylinder, but that locking means is responsive to the rotational positioning of the discs to release the barrel assembly for rotation when the discs have a particular rotational position relative to one another. The barrel assembly can be rotated in either direction away from the normally locked condition. A key for use with such a lock has an elongate blade which is of non-circular cross section and is twisted to create a plurality of relatively angularly disposed locating portions which are spaced apart longitudinally of the blade.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: April 23, 1985
    Assignee: Ogden Industries Pty. Ltd.
    Inventors: Gerald F. Dunphy, Donald J. Newman
  • Patent number: 4382349
    Abstract: An operator for hinged windows and being of the kind including a chain which can flex in one direction only and which provides the support whereby the window is held open. Movement of the chain into and out of the operator housing is controlled by a sliding actuator which is moveable along an elongate guide track between two extreme positions corresponding to the window closed and fully opened positions respectively. The actuator can be retained in any selected position between the two extremes by engagement between a spring loaded detent and a toothed rack. The detent is carried by the actuator and the rack is fixed relative to the guide track. Release of the detent is effected by moving a lever connected to the detent against a fixed handle of the actuator and the actuator can be moved along the guide track while the lever and handle are so engaged.
    Type: Grant
    Filed: July 1, 1980
    Date of Patent: May 10, 1983
    Assignee: Ogden Industries Pty. Limited
    Inventors: Gerald F. Dunphy, Donald J. Newman
  • Patent number: 4320638
    Abstract: A key blank in which the upper edge surface of the blade has a longitudinal groove dividing that surface into two laterally spaced parts, and a relatively narrow waist is formed in the blade upper portion by progressive narrowing of the blade width downwardly from and adjacent the upper edge surface. The blade is basically a flat parallel sided member and the waisting is created by two substantially symmetrical grooves. Each part of the upper edge surface on each side of the longitudinal groove slopes downwardly and outwardly so as to be substantially normal to the flat sloping surface of the adjacent waisting groove. A key formed from the blank described has bittings cut in the upper edge surface and each bitting is cut on an angle so that the base of each resulting valley part slopes at substantially the same angle as a part of the upper edge surface. Alternate valley base surfaces may slope in opposite directions.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: March 23, 1982
    Assignee: Ogden Industries Pty. Limited
    Inventors: Gerald F. Dunphy, Donald J. Newman
  • Patent number: 3982822
    Abstract: Large area lens assembly, e.g., for an overhead projector, has glass stage bonded directly to plastic incremental lens to eliminate light-reflective interface and conserve space. Differential thermal expansion problems are overcome by critical selection of materials, dimensions and procedures. A unitary structure with multiple incremental lenses is made possible.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: September 28, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Terrence M. Conder, Donald J. Newman
  • Patent number: D296519
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: July 5, 1988
    Assignee: Ogden Industries Pty. Ltd.
    Inventors: Donald J. Newman, John A. Christie