Patents Assigned to Portasilo Limited
  • Discharge means for a silo
    Patent number: 5622467
    Abstract: A discharge mechanism for a silo comprising an entry chamber adapted to be in communication with the silo interior and having a directing member mounted in the entry chamber, for rotary movement about a vertical axis, to direct flowable material in the entry chamber through a discharge passage in a bottom wall of the chamber.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: April 22, 1997
    Assignee: Portasilo Limited
    Inventor: John K. Pethullis
  • Cabin
    Patent number: 5398465
    Abstract: A cabin comprising a base structure, a wall structure and a roof structure, wherein the wall structure comprises two opposed side wall members which define two opposite side walls of the cabin and which each provide a pair of corners and a pair of return walls which define a part of front and rear walls of the cabin, the space between the rear return walls being closed by a rear wall member and the space between the front return walls being closable by a door.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: March 21, 1995
    Assignee: Portasilo Limited
    Inventor: Richard L. Tagg
  • Pump
    Patent number: 4947491
    Abstract: A pump comprising a flexible member defining at least part of a variable volume pumping chamber, an inlet valve to permit of liquid to enter the chamber thereby and an outlet valve to permit of liquid to leave the chamber thereby, and an operating member to deform the flexible member to vary the volume of the pumping chamber to pump liquid into and out of the chamber.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: August 14, 1990
    Assignee: Portasilo Limited
    Inventors: Brian Parkinson, Angus J. Bishop, Richard L. Tagg
  • Portable toilet
    Patent number: D349578
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: August 9, 1994
    Assignee: Portasilo Limited
    Inventor: Richard L. Tagg
  • Combined water closet and wash basin
    Patent number: D352096
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: November 1, 1994
    Assignee: Portasilo Limited
    Inventor: Richard L. Tagg