Patents by Inventor Allan Riach

Allan Riach 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: 4983106
    Abstract: The machine comprises first and second screw rotors (1, 2) supported by bearings (47) in a stator casing (3) which is provided with a suction inlet and a delivery outlet, the first rotor is driven by a motor (10) and the second rotor is driven by means of synchronizing gearing (11-12) situated in a first chamber (14) of the casing and located between the motor (10) and one of the ends of the rotors, the gearing (11-12) running in a lubricating fluid (15), the machine is characterized in that the cavity (30) of the casing containing the rotors (1-2) is separated from the first chamber (14) by a first wall (16) having the shafts (8, 13) of the rotors passing therethrough via seals (17-18), in that the shafts of the rotors at the opposite ends of the rotors to the ends having the gearing pass through a second wall (20) via seals (24-25), and in that the casing (3 ) includes, beyond the second wall (20), a second chamber (31) connected to the first chamber (14) by a main pipe (29) provided with pumping means (49)
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: January 8, 1991
    Assignee: Societe Anonyme dite: Alcatel Cit
    Inventors: Dan Wright, Allan Riach, Jean-Marie Crinquette, Rene Sibuet, Jacques Long
  • Patent number: 4411321
    Abstract: A cultivating implement to be carried by a vehicle comprises a frame (10) having spaced and opposed members (11, 12) between which a tine-carrying bar (13) is supported for gyratory motion the direction of which is counter to the direction of forward rotation of the ground wheels of the carrying vehicle and which derives from and is centered on the axis of axially-aligned stub shafts (14,15) adapted to be driven from a prime mover and supported in bearings mounted in or on said opposed members of the frame. Preferably the mutually-opposed ends of the stub shafts (14, 15) are cranked in mirror-image fashion and the tine-carrying bar (13) is supported between bearing arrangements (28, 29) centered on the crank arms. The angle of presentation of the tines to the ground is preferably selectable to accord with the nature of the work to be done and the tine sweeps or shovels to be used therefor.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: October 25, 1983
    Inventor: Allan Riach