By Shifting Distributor Patents (Class 91/14)
  • Automatic pneumatic valve reset system
    Patent number: 9003949
    Abstract: A cup for an air valve assembly in a positive displacement pneumatic motor includes a cup body, a gas cavity, and a first pilot slot. The cup body is rectilinear and has a sliding face as one side, and the gas cavity is concave and extends into the cup body through the sliding face and terminates within the cup body. The first pilot slot extends from the gas cavity and into the cup body through the sliding face and terminates within the cup body.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Graco Minnesota Inc.
    Inventor: Timothy S. Roman
  • Process and apparatus for impregnating a product obtained by cutting a continuous web
    Patent number: 8999427
    Abstract: The invention relates to a method for the impregnation of a product consisting of fibrous material and formed from a continuous web (22), the method comprising at least one first step of cutting out a specific zone (24) of the continuous web (22) and at least one second step of applying an impregnation product to the specific zone (24), the first and second steps being carried out simultaneously or virtually simultaneously.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: April 7, 2015
    Assignee: SCA Tissue France
    Inventor: Remy Ruppel
  • Automatic pneumatic valve reset system
    Publication number: 20120036991
    Abstract: A cup for an air valve assembly in a positive displacement pneumatic motor includes a cup body, a gas cavity, and a first pilot slot. The cup body is rectilinear and has a sliding face as one side, and the gas cavity is concave and extends into the cup body through the sliding face and terminates within the cup body. The first pilot slot extends from the gas cavity and into the cup body through the sliding face and terminates within the cup body.
    Type: Application
    Filed: June 23, 2011
    Publication date: February 16, 2012
    Applicant: Graco Minnesota Inc.
    Inventor: Timothy S. Roman
  • Control systems and arrangements for use in mineral mining installations
    Patent number: 3965797
    Abstract: In a mineral mining installation employing a series of shifting rams for advancing a scraper-chain conveyor provided with a guide for a mining machine a control system with a central control station for transmitting control signals. The control signals serve to actuate local control valves, possibly in time dependence, to cause a selected one or group of metering devices to transfer a pre-determined volume of pressure fluid to one or more of the rams to effect said advancement. This volume of pressure fluid is some fraction of the total capacity of the ram or rams in question so that by repeatedly transmitting control signals the device or devices can perform successive cycles of operation to thereby cause the ram or rams associated therewith to extend in defined increments.
    Type: Grant
    Filed: December 10, 1973
    Date of Patent: June 29, 1976
    Assignee: Gewerkschaft Eisenhutte Westfalia
    Inventor: Hans Theodor Grisebach