Patents by Inventor Malcolm McPherson

Malcolm McPherson 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: 5062919
    Abstract: The invention provides a method and apparatus for joining at least two webs or running lengths of material together by means of at least one strip of adhesive applied to at least one of the webs in such a manner that the consumption of adhesive is reduced and greater reliability is achieved. This is made possible by using an adhesive having a viscosity which is close to the viscosity of water and causing the adhesive to be acted upon by a low pressure and to be filtered prior to application to the associated web.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: November 5, 1991
    Assignee: Grafotec Kotterer GmbH
    Inventors: Malcolm McPherson, Reinhold Ernest
  • Patent number: 5045044
    Abstract: A method for folding a paper web in which a liquid folding adjuvant is applied along a folding line so that an improved fold is produced which is sharper if the liquid folding adjuvant is heated, preferably in a continuous flow heater, to a temperature of the order of 30.degree. C. to 60.degree. C. dependent on the type of paper being processed.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: September 3, 1991
    Assignee: Grafotec Kotterer GmbH
    Inventors: Malcolm McPherson, Reinhold Ernest
  • Patent number: 4952267
    Abstract: The invention provides a method an apparatus for joining at least two webs or running lengths of material together by means of at least one strip of adhesive applied to at least one of the webs in such a manner that the consumption of adhesive is reduced and greater reliability is achieved. This is made possible by using an adhesive having a viscosity which is close to the viscosity of water and causing the adhesive to be acted upon by a low pressure and to be filtered prior to application to the associated web.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: August 28, 1990
    Assignee: Grafotec Kotterer GmbH
    Inventors: Malcolm McPherson, Reinhold Ernest