Patents by Inventor Roger Engels

Roger Engels 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).

  • Diskette spring and diskette
    Patent number: 4620247
    Abstract: An improved spring structure for a micro floppy diskette is provided which utilizes a formed strip of relatively rigid plastic sheeting (preferably polyester) having at least two generally uniform wave crest regions with a trough therebetween which extend transversely across such strip. Micro floppy diskettes incorporating such spring structure display improved capacity to wipe surface portions of the flexible disk and have extended service lives.
    Type: Grant
    Filed: June 4, 1985
    Date of Patent: October 28, 1986
    Assignee: Plicon Corporation
    Inventors: Walter A. Papciak, Karl K. Hoffman, Roger Engel, Adam Wieczorek
  • Pressure sensitive valve actuator
    Patent number: 4457334
    Abstract: A pressure sensitive device for shutting off flow through a valve is disced. The device includes a pressure sensor having an integral atmospheric pressure reference for releasing a plunger to shut off flow through the valve. A manually operated eccentric pin and slot arrangement is provided for resetting the plunger to the open position.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: July 3, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Henry Becker, Rodney Hubbard, Roger Gibbs, Roger Engels