Patents Assigned to Air Pump Industries
  • Patent number: 7094004
    Abstract: A method and system are disclosed for moving and placing in hard to reach locations granular and other particulate material such as sand, gravel, earth and similar materials. The system includes an improved augar for moving the material and an improved rotary airlock mechanism designed to withstand the abrasive action of the particulate material and at the same time move the material several hundred feet through a flexible conduit for placement in a pre-designated location. A system and apparatus is also disclosed for transporting on one vehicle all of the devices needed at a remote site for operation the particulate placement system, including a front loader.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: August 22, 2006
    Assignee: Air Pump Industries
    Inventors: Richard Dunlop, Robert Griffin, Stephen C. Stokes, Denis A. Stokes, Gary Bonney
  • Patent number: 6336774
    Abstract: An Improved Apparatus and Method for Moving and Placing Granulate is disclosed. The disclosed device is a portable, self-contained apparatus capable of discharging granulate into hard-to-reach areas, as well as providing assistance in covering vast open areas with granulate in a short time. Furthermore, the device and method described herein permit the application of granulate into areas that are normally inaccessible and would require many hours of human labor, and thereby potentially avoiding damage to the site that might be incurred if employing a prior method and device.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: January 8, 2002
    Assignee: Air Pump Industries, Inc.
    Inventors: Richard Dunlop, Robert Griffin