BELTED OVAL PNEUMATIC TUBE-TIRE

• US 3,606,921 A
• Filed: 06/23/1969
• Issued: 09/21/1971
• Est. Priority Date: 06/23/1969
• Status: Expired due to Term

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Charles E. Grawey
• Inventors: Grawey, Charles E.
• Application Number:
  US04/835,499
• Time in Patent Office: 820 Days
• US Class Current: 152/453
• CPC Class Codes: B29D 30/08 Building tyres
• CPC Class Codes: B60C 15/0233 Securing tyres without beads; Securing closed torus or tubular tyres
• CPC Class Codes: B60C 3/02 Closed, e.g. toroidal, tyres
• CPC Class Codes: B60C 9/023 built up from narrow strips, individual cords or filaments, e.g. using filament winding
• CPC Class Codes: Y10T 152/10819 Characterized by the structure of the bead portion of the tire
• CPC Class Codes: Y10T 152/10864 Sidewall stiffening or reinforcing means other than main carcass plies or foldups thereof about beads

Abstract

A PNEUMATIC TUBE-TIRE IS FABRICATED BY APPLYING INEXTENSIBLE REINFORCING FILAMENTS ON AN OVAL TORODIAL TUBE MEMBER WHICH HAS ITS MAJOR AXIS PARALLEL TO THE AXIS OF REVOLUTION OF THE RESULTING TUBE-TIRE CARCASS AND PROVIDING THE RESULTING REINFORCED TUBE-TIRE CARCASS WITH AN INEXTENSIBLE CIRCUMFERENTIAL BELT (I.E. ONE THAT IS CIRCUMFERENTIALLY INEXTENSIBLE) ABOUT ITS OUTER PERIPHERY TO MAINTAIN THE TUBE-TIRE CARCASS IN ITS OVAL CONFIGURATION WHEN THE TUBE-TIRE IS PRESSURIZED. THE INEXTENSIBLE CIRCUMFERENTIAL BELT MAY BE ASSOCIATED WITH RUBBER STOCK FORMING THE TREAD OF THE TUBE-TIRE AND CAN BE FORMED SEPARATELY OR INTEGRALLY WITH THE TUBE-TIRE CARCASS. PREFERABLY, THE CIRCUMFERENTIAL BELT WILL CONTAIN INEXTENSIBLE REINFORCING FILAMENTS WHICH ARE ORIENTED GENERALLY PARALLEL TO THE MIDCIRCUMFERENTIAL PLANE OF THE TUBE-TIRE NAD GENERALLY NORMAL TO THE REINFORCING FILAMENTS SURROUNDING THE TUBE-TIRE CARCASS. SPACED APART ROLL RESTRAINING HOOPS ARE PLACED WITHIN THE REINFORCING FILAMENTS SURROUNDING THE TUBE-TIRE CARCASS FOR LATERAL STABILITY.

Claims