Tire building and shaping drum

• US 3,111,445 A
• Filed: 07/05/1960
• Issued: 11/19/1963
• Est. Priority Date: 07/03/1959
• Status: Expired due to Term

• Current Assignee: Jacques Pouilloux, Saint Paul Jean R
• Original Assignee: Jacques Pouilloux, Saint Paul Jean R
• Inventors: JACQUES POUILLOUX, SAINT PAUL JEAN R
• Application Number:
  US04/057,862
• Time in Patent Office: 1,232 Days
• US Class Current: 156/416
• CPC Class Codes: B29D 2030/3214 Locking the beads on the drum; details of the drum in the bead locking areas, e.g. drum shoulders
• CPC Class Codes: B29D 30/245 Drums for the single stage building process, i.e. the building-up of the cylindrical carcass and the toroidal expansion of it are realised on the same drum expansion to a toroidal shape B29D30/36
• CPC Class Codes: B29D 30/36 Expansion of tyres in a flat form , i.e. expansion to a toroidal shape independently of their building-up process, e.g. of tyres built by the flat-tyres method or by jointly covering two bead-rings

Claims

1. A TIRE BUILDING AND SHAPING DRUM COMPRISING A PAIR OF AXIALLY SPACED AIR-IMPERVIOUS SIDE MEMBERS, MEANS SUPPORTING SAID SIDE MEMBERS COAXIALLY FOR RELATIVE AXIAL MOVEMENTS, AND ANNULAR FLEXIBLE AIR-IMPREVIOUS MEMBRANE INEXTENSIBLE IN AN AXIAL DIRECTION, CLAMP MEANS ON EACH SIDE MEMBER SECURING THE EDGES OF SAID MEMBRANE TO THE SAID SIDE MEMBERS WITH AN UNSUPPORTED PORTION OF THE MEMBRANE BETWEEN THE SIDE MEMBERS TO PROVIDE THEREWITH AN ENCLOSED AIR CHAMBER HAVING A PASSAGE THEREINTO FOR AIR UNDER PRESSURE, THE SAID MEMBRANE AND SAID MEMBERS IN ONE POSITION THEREOF DISPOSING SAID MEMBRANE IN A SUBSTNTIALLY CYLINDRICAL CONFIGURATION AND MOVABLE THEREFROM TO ANOTHER POSITION TO DISPOSE THE SAID MEMBRANE IN A SUBSTNTIALLY TOROIDAL CONFIGURATION WHEN AIR UNDER PRESSURE IS INTRODUCED INTO SAID CHAMBER, AND MEANS TO