Patents Assigned to Beverly Limited
  • Apparatus for preparing tread bands for use in tire retreading
    Patent number: 4111619
    Abstract: A sinker unit for preparing an annular unvulcanized tread band comprises an annular mold for supporting the tread band and an expandable annular sinker member for forcing the tread band against the inner surface of the mold. The sinker member includes side walls which are resiliently biassed outwardly so that the sinker member is maintained in a tensioned condition when it is forced against the tread band. The sinker member may be forced against the tread band by means of an expanding air bag underneath the sinker member.
    Type: Grant
    Filed: April 21, 1977
    Date of Patent: September 5, 1978
    Assignee: Beverly Limited
    Inventor: Jan Herbert Farquharson Kent