Patents by Inventor Roy Swartz

Roy Swartz 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).

  • Material handling system and control valve therefor
    Patent number: 5009551
    Abstract: A system for handling particulate material includes a rotary valve for feeding material from a holding device to a receiving device. The rotary valve includes a slide valve that is electrically controlled in response to sensed conditions in the handling system.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: April 23, 1991
    Assignee: Delaware Investments Corp.
    Inventor: Roy Swartz
  • Material handling system and control valve thereof
    Patent number: 4940131
    Abstract: A rotary valve for use in a particulate material handling system having an elevated device for holding a supply of the particulate material, a lower material receiving device and a remote control device. The rotary valve includes a housing having a rotor chamber, a side inlet communicating with the rotor chamber, a lower outlet communicating with the rotor chamber and communicable with the material receiving device, a rotor journalled in the rotor chamber having a plurality of radially disposed vanes and a slide valve disposed in the inlet for controlling the flow of material therethrough. The slide valve is operatively connected to the remote control device and is operated in response to the operating conditions sensed by sensing devices which are connected to the remote control device.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: July 10, 1990
    Assignee: Delaware Investments, Inc.
    Inventor: Roy Swartz