Patents by Inventor Bernard Charles Allitt

Bernard Charles Allitt 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).

  • Pneumatic tire manufacture
    Patent number: 4060357
    Abstract: The retaining rings for the bead formation of a green tire in a tire mould are variable in diameter to allow for increase in the bead diameter of the finished tire relative to its green state and to prevent damage caused by forcing the beads of a green tire over bead rings of too large diameter. Preferably the bead retaining rings expand to their maximum diameter in response to the application of curing pressure inside the tire and automatically retract when curing pressure is relieved.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: November 29, 1977
    Assignee: Dunlop Limited
    Inventor: Bernard Charles Allitt
  • Tire building apparatus
    Patent number: 3979249
    Abstract: An inflatable shaping bag or diaphragm for a tire building or shaping former. The bag is based on an elastomeric sheet radially expansible but has high lateral bending stiffness in part of its width owing to the presence of at least one pair of reinforcements of inextensible reinforcing elements, each element lying in a plane containing the axis of the bag. The reinforcement can consist, for example, of two layers of parallel steel cords, spaced apart by a layer of rubber.
    Type: Grant
    Filed: August 20, 1974
    Date of Patent: September 7, 1976
    Assignee: Dunlop Limited
    Inventors: Ernest George Nicholls, Bernard Charles Allitt
  • Tire grinding machines
    Patent number: 3977131
    Abstract: Method and apparatus for improving the uniformity of a tire and wheel assembly. The apparatus comrises a frame rotatable through four stations, and displaceable grinding and driving apparatus provided at two of the staions to drive the tire against a rotation grinding wheel, the direction of rotation of the tire and/or grinding wheel being reversed relative to the direction(s) at the previous station.
    Type: Grant
    Filed: February 4, 1975
    Date of Patent: August 31, 1976
    Assignee: Dunlop Limited
    Inventors: Eric Henry Searle, Bernard Charles Allitt