Patents Represented by Attorney David Rasmussen
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Patent number: 4579370Abstract: A protected document has a cancellation phrase, normally invisible to the human eye, which will appear if the document is copied on a color copier. The protection of these documents is improved in the following protected document. The document is made up of a substrate, first and second cancellation phrase images which form a combined cancellation phrase image printed on the substrate, first and second background images forming a combined background image printed on the substrate and a camouflage overlay image (merged with) the combined cancellation and combined background images. The first and second cancellation phrase images appear on the document when it is copied on a color copier. The two images extend the range of protection for color copy machines having multiple darkness settings.Type: GrantFiled: July 6, 1984Date of Patent: April 1, 1986Assignee: Burroughs CorporationInventors: Thomas R. Corwin, William H. Mowry, Jr.
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Patent number: 4491961Abstract: Unprocessed video signals from an optical scanner are processed in accordance with a transfer function which adjusts the gain of the unprocessed video to produce processed video which better represents the form of the object scanned. The transfer function is selected from a memory including a plurality of such functions by a signature signal which characterizes the entire scanner system including the optical system, the illumination system and the sensor system. The signature signal is developed from an initial value of signature which is updated by processing with the unprocessed video.Type: GrantFiled: February 12, 1982Date of Patent: January 1, 1985Assignee: Burroughs CorporationInventors: David Sutton, Jimmie Neill
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Patent number: 4460224Abstract: Disclosed is a foldable circuit assembly 10 which has eight support members 11 having windows 12 in which circuits are bonded. The support members are all interconnected by a flexible polyimide web and an electrical circuit is etched thereon so as to interconnect the circuits and the external world via a contact tab extending from one of the support wafer members 11.Type: GrantFiled: May 21, 1982Date of Patent: July 17, 1984Assignee: Burroughs CorporationInventor: Herbert Stopper
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Patent number: 4418907Abstract: Modular automatic paper handling apparatus wherein a vertically movable paper item tray is incrementally elevatable into a paper feeding position adjacent a feeding device. A cable drive including an electromagnetic impulse clutch and solenoid escapement provide control for elevating the item tray. A pivotally movable reload tray is adapted to be positioned over the main item tray such that finger-like projections integral therewith are interfitted with upstanding projections on the main item tray enabling the main item tray to be raised into a position to automatically unload paper from the reload tray after which the reload tray is automatically snapped out of the way of the main item tray. A cable counter weight permits the main tray to retract downwardly to feeding position without overrunning or bouncing.Type: GrantFiled: September 16, 1981Date of Patent: December 6, 1983Assignee: Burroughs CorporationInventors: Richard E. Shultz, William E. Voecks, Jr.
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Patent number: 4383755Abstract: A self contained, demountable, unitary modular optical system for a Solid State Laser Diode Printer/Copier utilizes a folded light beam path whereby laser light is collimated through a compound four element collimating objective lens assembly, passed through a cylindrical lens focussing the beam to a horizontal line image onto the facets of a rotatable polygon mirror assembly. The beam is then passed through a cylindrical meniscus lens focussing the beam to a small dimension in the scanning or horizontal direction. A pair of cylindrical-spherical lenses with the corresponding centers of the cylindrical and spherical surfaces located near the facet of the polygon provide cross-scan focussing in the vertical direction as well as approximating a pair of toridal lenses. Horizontal and vertical spot size can thus be independently focussed.Type: GrantFiled: January 11, 1982Date of Patent: May 17, 1983Assignee: Burroughs CorporationInventors: Richard C. Fedder, George C. Schafner, Thomas Robson, Thomas F. McMahon
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Patent number: 4376589Abstract: Paper drive apparatus for multi-ply unglued paper wherein a centrally disposed pin wheel member is rotatable in contact with a backup member the latter having a central groove or slot into which the pins of the pin wheel member are rotatably receivable. Unglued, multi-ply paper is fed into the nip between the pin wheel member and the bifurcated backup roller across a demountable, flexible paper guide, the latter ensuring the proper angle of entry of the unglued paper with respect to the nip between the pin wheel and backup roller.Type: GrantFiled: July 20, 1981Date of Patent: March 15, 1983Assignee: Burroughs CorporationInventors: Frank J. Avellanet, Robert L. Battey, Lloyd J. Burtrem
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Patent number: 4341455Abstract: Novel apparatus for transferring magnetic and conducting toner from a dielectric surface to plain paper by interposing a dielectric belt mechanism between the dielectric surface of an imaging drum and a plain paper substrate such that the toner is first transferred to the dielectric belt and subsequently transferred to a plain paper in a fusing station. Operably associated cleaning and discharging of the dielectric belt is provided.Type: GrantFiled: November 13, 1979Date of Patent: July 27, 1982Assignee: Burroughs CorporationInventor: Richard C. Fedder
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Patent number: 4115191Abstract: An intense, space-charge-neutralized, pulsed ion beam is used to heat a magnetically-confined plasma, such as a tokamak plasma, by injecting the ion beam into the plasma along a trajectory that is generally perpendicular to the confining magnetic field. For proper beam parameters, the ion beam will propagate across the magnetic field in the vacuum region, penetrate the confined plasma, and deposit its energy in the interior of the plasma.Type: GrantFiled: June 14, 1977Date of Patent: September 19, 1978Assignee: The United States of America as represented by the Secretary of the NavyInventors: Edward Ott, Wallace M. Manheimer