Patents by Inventor Michael J. Constable

Michael J. Constable 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: 4401232
    Abstract: An integrally formed injection moulded tubular plastics container body open at one end and closed at the other end. A sleeve (10) of sheet material lies outwardly of the injection moulded plastics (28) of the tubular wall and a layer (20) of sheet material lies inwardly of the injection moulded plastics (30) of the end wall, both sheets (10,20) being secured to the plastics (28,30) during the moulding operation. In producing the container, the sleeve (10) is inserted into the female mould and the other sheet (20) is inserted so as to lie transversely across the mould, partway along the sleeve, and hold the sheet to the mould walls while the male mould member is inserted, carrying the transverse sheet (20) to the end of the mould.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: August 30, 1983
    Assignee: DRG (UK) Limited
    Inventors: Michael J. Constable, David S. Hamblin