Patents by Inventor Harry George Cockburn

Harry George Cockburn 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: 6041930
    Abstract: A breakable sachet and method of manufacturing same is described. The sachet is formed from layers (11, 12, 13) of plastics film sealed so as to form a reservoir (19). The sachet further incorporates a semi-rigid layer (11) which is scored or weakened (15) so that when the semi-rigid layer is bent, it fractures along the score (15) and the contents of the reservoir can be expelled via a hole (16), formed proximate the fracture point, in controlled manner. A method of manufacturing the sachets includes forming a vertical reservoir which includes a semi-rigid layer (33), the reservoir is partitioned by means of a hot roller (34, 35) and the webs (31, 32, 33) forming the reservoir and sealed to the semi-rigid layer (33) include a hole (16) formed therein. The semi-rigid layer (33) includes a score or weak point (15).
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: March 28, 2000
    Assignee: Thornton Trustee Company Ltd.
    Inventor: Harry George Cockburn