Patents Assigned to Nampak Products Limited
  • High pressure bag
    Patent number: 5683182
    Abstract: A high pressure bag for pre-stressing a support pack in an underground mine has a fluid impervious liner and three tubular envelopes. The liner is located in the first envelope with end portions of the first envelope and edge strips of the liner folded over underneath the first envelope. The first envelope with the liner therein are in the second envelope, with end portions of the second envelope folded over on top of the second envelope. The second envelope is located within the third envelope which has opposed edges stitched closed. The liner has a nozzle which extends through openings in the envelopes.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: November 4, 1997
    Assignees: Nampak Products Limited, H L & H Timber Products (Proprietary) Limited
    Inventor: Robin Ian Moore
  • High pressure bag
    Patent number: 5634721
    Abstract: A high pressure bag for pre-stressing a support pack in an underground mine has a fluid impervious liner and three tubular envelopes. The liner is located in the first envelope with end portions of the first envelope and edge strips of the liner folded over underneath the first envelope. The first envelope with the liner therein are in the second envelope, with end portions of the second envelope folded over on top of the second envelope. The second envelope is located within the third envelope which has opposed edges stitched closed. The liner has a nozzle which extends through openings in the envelopes.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: June 3, 1997
    Assignee: Nampak Products Limited
    Inventor: Robin I. Moore
  • Flexible, intermediate bulk container
    Patent number: 5556205
    Abstract: A flexible intermediate bulk container includes a number of flexible elements sewn to each other along longitudinally extending seams, at least two of the elements being tubular.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: September 17, 1996
    Assignee: Nampak Products Limited
    Inventors: Ian G. Gallie, John R. Thorpe
  • Blank for a container
    Patent number: D406235
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: March 2, 1999
    Assignee: Nampak Products Limited
    Inventors: Trevor Mark Barnes, Juanita Day, Patricia Swan, Geoffrey Kohlberg