Patents by Inventor David Hermida

David Hermida 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).

  • Method of cutting rollfeed media
    Patent number: 6454475
    Abstract: A paper cutter assembly for a printer/plotter is mounted on the printhead carriage for movement therewith to avoid separate mounting and guide structure. A cutter wheel is mounted in a housing for cam induced movement between a raised inactive position and a lower active position by engagement of a cam element carrier mounted for movement in the cutter housing with structure on the printer chassis. The printer platen has a stationary cutter bar which extends in a channel in the platen transversely of the path of paper movement and has a cutter wheel receiving well at one end of the channel into which the cutter wheel drops without contacting the platen or cutter bar at commencement of a cutting operation. Camming surfaces on the platen engage the side of a cutter drive wheel to move the cutter wheel into engagement with the cutter bar and then to raise the cutter wheel to the proper amount of operational overlap of the cutting edges as the cutter assembly moves across the paper path.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: September 24, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Robert Giles, David Hermida, Tony Lang
  • Automatic paper cutter for large format printer
    Publication number: 20010055508
    Abstract: A paper cutter assembly for a printer/plotter is mounted on the printhead carriage for movement therewith to avoid separate mounting and guide structure. A cutter wheel is mounted in a housing for cam induced movement between a raised inactive position and a lower active position by engagement of a cam element carrier mounted for movement in the cutter housing with structure on the printer chassis. The printer platen has a stationary cutter bar which extends in a channel in the platen transversely of the path of paper movement and has a cutter wheel receiving well at one end of the channel into which the cutter wheel drops without contacting the platen or cutter bar at commencement of a cutting operation. Camming surfaces on the platen engage the side of a cutter drive wheel to move the cutter wheel into engagement with the cutter bar and then to raise the cutter wheel to the proper amount of operational overlap of the cutting edges as the cutter assembly moves across the paper path.
    Type: Application
    Filed: August 14, 2001
    Publication date: December 27, 2001
    Inventors: Robert Giles, David Hermida, Tony Lang
  • Automatic paper cutter for large format printer
    Patent number: 6315474
    Abstract: A paper cutter assembly for a printer/plotter is mounted on the printhead carriage for movement therewith to avoid separate mounting and guide structure. A cutter wheel is mounted in a housing for cam induced movement between a raised inactive position and a lower active position by engagement of a cam element carrier mounted for movement in the cutter housing with structure on the printer chassis. The printer platen has a stationary cutter bar which extends in a channel in the platen transversely of the path of paper movement and has a cutter wheel receiving well at one end of the channel into which the cutter wheel drops without contacting the platen or cutter bar at commencement of a cutting operation. Camming surfaces on the platen engage the side of a cutter drive wheel to move the cutter wheel into engagement with the cutter bar and then to raise the cutter wheel to the proper amount of operational overlap of the cutting edges as the cutter assembly moves across the paper path.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: November 13, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Robert Giles, David Hermida, Tony Lang