Patents by Inventor Gerrit W. E. Leuvelink

Gerrit W. E. Leuvelink 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).

  • Method of and apparatus for arranging helical coils in interdigitated side-by-side disposition
    Patent number: 4488347
    Abstract: A method and apparatus is proposed for the simultaneous joining together of a multiplicity of individual helical coils in forming a link belt section intended for co-operation with other like sections to produce a link belt of a requisite length, coils of opposite hand being arranged side-by-side in pairs and such pairs being combined together to form the section. Hinge wires are threaded through the interdigitated turns of adjacent coils to maintain the integrity of the total structure.The apparatus includes a guide means for locating the individual coils one relative to another and a roller nip arrangement through which the coils, in a requisite relative disposition, are caused to pass. Hinge wire insertion means is also provided, whereby individual hinge wires are introduced into the interdigitated turns of adjacent coils.
    Type: Grant
    Filed: July 8, 1981
    Date of Patent: December 18, 1984
    Assignee: Textiel Techniek Haaksbergen B.V.
    Inventor: Gerrit W. E. Leuvelink
  • Method for the production of a link-belt
    Patent number: 4423543
    Abstract: The application discloses a dimensionally stable link-belt comprising a multiplicity of helical coils arranged in interdigitated side-by-side disposition and connected together by respective hinge wires threaded therethrough, and also a method for producing the same wherein either or both of the coils and hinge wires, being of a synthetic thermoplastic monofilament material, deform on subjecting the belt to heat treatment under tension so as to impart dimensional stability to the total structure.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: January 3, 1984
    Assignee: T.T. Haaksbergen B.V.
    Inventor: Gerrit W. E. Leuvelink
  • Method and means for winding helical coils from thermoplastic materials
    Patent number: 4388264
    Abstract: A method of and means of winding close wound helical coils of a thermoplastic monofilament material is proposed wherein, in order to avoid secondary twist in the resultant coil, the coil, after having been wound and heat set under controlled conditions on a first part of a mandrel, is twisted in a direction tending to close the individual turns of the coil during the cooling thereof while passing along and/or from the end of a second part of the mandrel to a twist arresting means arranged in spaced apart disposition relative to such end.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: June 14, 1983
    Assignee: Textieltechniek Haaksbergen B.V.
    Inventor: Gerrit W. E. Leuvelink
  • Method for the production of a link-belt and a link-belt produced thereby
    Patent number: 4345730
    Abstract: The application discloses a dimensionally stable link-belt comprising a multiplicity of helical coils arranged in interdigitated side-by-side disposition and connected together by respective hinge wires threaded therethrough, and also a method for producing the same wherein either or both of the coils and hinge wires, being of a synthetic thermoplastic monofilament material, deform on subjecting the belt to heat treatment under tension so as to impart dimensional stability to the total structure.
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: August 24, 1982
    Assignee: T. T. Haaksbergen B.V.
    Inventor: Gerrit W. E. Leuvelink