Patents by Inventor Robert S. Sheldon

Robert S. 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: 7593557
    Abstract: A method of signal processing of data using a computer by generating a symbolic map of the data using at least one wavelet transform, identifying target sequences in the symbolic map; and processing the data with reference to the target sequences to obtain waveform prognostic indicators.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 22, 2009
    Inventors: Daniel E. Roach, Henry J. Duff, Robert S. Sheldon
  • Publication number: 20080281213
    Abstract: A series of feed-forward applications are designed to coordinate heart/respiration/muscle and brain to produce a better quality of life endpoint. The applications will be used to treat anxiety, sleep disorders, arrhythmias and enhanced performance during athletic training. The coordination may be used as part of a diagnostic tool.
    Type: Application
    Filed: May 16, 2008
    Publication date: November 13, 2008
    Inventors: Daniel E. Roach, Henry J. Duff, Robert S. Sheldon
  • Patent number: 4180240
    Abstract: A low noise level valve for controlling high pressure fluid flow between an inlet and an outlet. The valve comprises a poppet movable along a given line with respect to a complementarily formed valve seat. The area between the poppet and valve seat comprises a series of spaced undulations which extend along a continuous curve of approximately 90.degree.. The undulations are disposed substantially parallel to the direction of poppet movement adjacent to the inlet and are substantially transverse adjacent to the outlet. The undulations define a plurality of orifices which are opened progressively from the outlet toward the inlet. The orifices act as pressure drops and also cause turbulence as fluid flows around the undulations, thereby holding the fluid flow below undesirable speed and noise levels. A balancing chamber may be provided to counter-balance the poppet movement. Sealing means may be provided by an undercut lip formed on a sealing member adjacent to the inlet.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: December 25, 1979
    Assignee: Air-Dry Corporation of America
    Inventors: Robert S. Sheldon, Jan W. Rabek
  • Patent number: 4179917
    Abstract: A low pressure dew and frost point indicator of the type having a vortex tube which directs a cold air stream against the back of a viewing mirror for observation of the initial formation of frost. The mirror has means for simple and automatic centering with respect to the cold air stream of the vortex tube for maximum temperature transfer. The mirror engages no heat conducting elements and has means for improved cold temperature transfer. A venturi nozzle passes the warm air output of the vortex tube around the cold air output for adjustment to provide optimum cold air generation by reduction of the vortex tube outlet pressure. A temperature control valve controls the temperature in the sample chamber by mixing the warm and cold air outputs of the vortex tube.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: December 25, 1979
    Assignee: Air-Dry Corporation of America
    Inventors: Robert S. Sheldon, Jan W. Rabek
  • Patent number: 3958599
    Abstract: A remote sensing regulator and shutoff valve for valve manifold applications. The manifold includes a pressure regulator and a shutoff valve downstream from the regulator. The sensing pressure input of the regulator is connected to a negative pressure area of the shutoff valve so that the output pressure of the regulator is increased to compensate for pressure drops both upstream and downstream from the shutoff valve. The shutoff valve includes a control knob for adjusting the reference pressure and for shutting off the reference pressure simultaneously with shutting off the main stream through the shutoff valve.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: May 25, 1976
    Assignee: Air-Dry Corporation
    Inventors: Robert S. Sheldon, David E. Whitten