Patents by Inventor David W. Pinkerpell

David W. Pinkerpell 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).

  • Printhead-carriage alignment and electrical interconnect lock-in mechanism
    Patent number: 4907018
    Abstract: A printhead cartridge and carriage assembly (10) is provided comprising: a carriage (12); a snap-spring (62) for securing a printing cartridge (14) in postion on the carriage; and an interconnect strip (16) for supplying electrical signals to the cartridge, including a force loading spring pad (24) for urging a portion of the interconnect strip against a portion of the cartridge. The cartridge has top (32), bottom (34), sides (36, 38), front (40) and rear (42) surfaces and includes a printhead (44) on the bottom surface, an electrical contact strip (46) on the back surface connected to the printhead, referencing pads (56) on the side surface, and a lip (64) on the back surface for accepting the snap-spring. Referencing surface (60) are provided for receiving the referencing pads on the cartridge. The spring pad urges the interconnect strip against the electrical contact of the cartridge.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: March 6, 1990
    Assignee: Hewlett-Packard Company
    Inventors: David W. Pinkerpell, Larry A. Jackson, J. Paul Harmon, Steve O. Rasmussen