Patents by Inventor Dunstan P. Sheldon

Dunstan P. Sheldon 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: 6112989
    Abstract: In a mobile passenger check-in or gate area station, the combination comprising a mobile cart having ambulatory structure, at least one printer stored in or at the cart and accessible for printing trip tickets or other documents and/or bag tags, and for retrieving of tickets, documents and/or tags when printed, and an electrical power supply on the cart for supplying power to the printer. One or more such carts can be wheeled into position adjacent a fixed check-in or gate area station facility, to support operation of the fixed facility.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: September 5, 2000
    Inventor: Dunstan P. Sheldon
  • Patent number: 5504321
    Abstract: In a ticketless travel card package, the combination comprising a generally rectangular base card having opposite first and second sides to carry and present identification indicia at the first side; a programmable read/write memory circuit carried in a local section of the card to store encoded travel data A: and a thermally printable flat sheet laminated onto the second side of the card to carry and visually present data B which is a sub-set of data A.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: April 2, 1996
    Inventor: Dunstan P. Sheldon
  • Patent number: 5010240
    Abstract: An off-line terminal, located at an airline boarding gate processes composite tickets bearing a magnetic stripe. Processing includes: authenticating, verifying, recording, canceling, bursting into component sections and sorting. Operations are controlled, logged and interrelated in accordance with ticket content and operating programs. Structurally, a processing computer cooperates with magnetic stripe transducers, a printer, a burster, signal lamps and a plurality of document-direction gates to select and control the path of individual ticket components. An additional magnetic sensor for ticket components (e.g. boarding passes) enables control of passenger movements after initial clearance with ticket processing.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: April 23, 1991
    Assignee: Mag-Tek, Inc.
    Inventor: Dunstan P. Sheldon
  • Patent number: 4960338
    Abstract: A printing system comprises:(x.sub.1) a source of A data and B data to be separately printed; a first printer connected with that source to receive the A data for printing it on a first sheet, such as an envelope, and to pass the B data; and a second printer connected with the data source via the first printer, and to print the B data on a second sheet, such as a letter, the first printer including:(a) a feed plate adjacent which the first sheet is fed in a longitudinal feed direction,(b) a print head for printing the A data on the first sheet,(c) a first drive at one longitudinal side of the print head, and a second drive at the opposite longitudinal side of the print head, the drives adapted to move the first sheet longitudinally forwardly, and then longitudinally reversely, to enable the print head to print on relatively spaced zones on the sheet.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: October 2, 1990
    Inventor: Dunstan P. Sheldon
  • Patent number: 4944619
    Abstract: A heat transferable line printer used with a cassette carrying a heat transferable ink ribbon capable of being printed many times. The ink ribbon cassette comprises a case which is symmetrical to left and right, a pair of spools provided within the case, one spool serving as a winding spool whereas the other serving as a supply spool, both of which carry the ink ribbon, and a cylindrical hub gear supported on opposite ends of each of the spools and projected from a notch provided on the side of the case.The printer comprises a print unit and a feed unit which are pivotably connected with each other through a shaft, the feed unit including a platen extending parallel to the shaft, the print unit having a thermal head extending along the platen. The print unit comprises a pair of spool shafts selectively fitted into the hub projecting from the side of the ink ribbon cassette, the ink ribbon cassette being inversely mounted on the print unit.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: July 31, 1990
    Assignees: Star Seimitsu Kabushiki Kaisha, Mag-Tek Inc.
    Inventors: Kenji Suzuki, Dunstan P. Sheldon
  • Patent number: 4879268
    Abstract: Multiple sheets are simultaneously thermally printed, the sheet having coatings located to enable same.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: November 7, 1989
    Inventor: Dunstan P. Sheldon
  • Patent number: 4744681
    Abstract: A form printer comprises:(a) a feed plate adjacent which a form is fed in a longitudinal feed direction;(b) a print head for printing the form;(c) a first drive roller or rollers at one longitudinal side of the print head, and a second drive roller or rollers at the opposite longitudinal side of the print head, the drive rollers adapted to move the form longitudinally;(d) a drive to drive the rollers in one mode to feed the form longitudinally forwardly, and then longitudinally reversely, to enable the print head to print on relatively widely spaced zones of the form.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: May 17, 1988
    Inventor: Dunstan P. Sheldon
  • Patent number: 4458668
    Abstract: A package is adapted for assembly to form a panel unit to be deployed on a body of water to alter heat transfer to or from the water or to block evaporation. The package includes:(a) multiple frame sections adapted to be coupled together in end-to-end relation to provide a loop-shaped frame bounding an open zone, and(b) a flexible sheet sized for connection to the loop-shaped frame so as to extend crosswise of that zone.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: July 10, 1984
    Inventor: Dunstan P. Sheldon