Coupling method for thermoplastic components

• US 2,961,363 A
• Filed: 03/27/1956
• Issued: 11/22/1960
• Est. Priority Date: 03/27/1956
• Status: Expired due to Term

• Current Assignee: Fred J. Lowes
• Original Assignee: Fred J. Lowes
• Inventors: Lowes, Fred J.
• Application Number:
  US03/574,274
• Time in Patent Office: 1,701 Days
• US Class Current: 156/294
• CPC Class Codes: B29C 65/024 making use of combustible material, i.e. the combustible material is in contact with the material to be joined
• CPC Class Codes: B29C 65/3412 comprising fillers
• CPC Class Codes: B29C 65/3468 characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings B29C65/3668 takes precedence
• CPC Class Codes: B29C 65/3476 being metallic
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/1142 Single butt to butt joints
• CPC Class Codes: B29C 66/5221 for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/73921 characterised by the materials of both parts being thermoplastics
• CPC Class Codes: B29K 2023/06 PE, i.e. polyethylene
• CPC Class Codes: B29K 2027/06 PVC, i.e. polyvinylchloride

Claims

1. METHOD FOR JOINING COMPONENTS OF THERMOPLASTIC RESINOUS MATERIAL WHICH COMPRISES PROVIDING BETWEEN AND WITHIN THE ENGAGING SURFACE PORTIONS OF SAID PLASTIC COMPONENTS THAT ARE IN CONTIGUOUS RELATIONSHIP IN COUPLED CONBINATION A HOLLOW ELEMENT CONTAINING AN EXOTHERMIC, AUTO-COMBUSTIBLE SUBSTANCE, SAID HOLLOW ELEMENT COMFORMING GENERALLY TO THE ENGAGING CONFIGURATIONS OF SAID COMPONENTS, IGNITING SAID EXOTHERMIC SUBSTANCE IN SAID ELEMENT TO GENERATE SUFFICIENT HEAT TO FUSE THE THERMOPLASTIC MATERIAL ADJACENT TO SAID ELEMENT ON THE ADJOINING SURFACES OF SAID COMPONENTS, INTERFUSING A CORRESPONDING PORTION OF THE THERMOPLASTIC MATERIAL ON THE ADJOINING SURFACES OF SAID COMPONENTS, INTERFUSING A CORRESPONDING EXOTHERMIC SUBSTANCE, AND WELDING SAID COMPONENTS TOGETHER BY COOLING THE INTERFUSED PORTION OF THE THERMOPLASTIC MATERIAL IN SAID ADJOINED COMPONENTS.