Method of forming a metal pipe with cuff for forming pipe joint
US5980670A · kind A · utility
12Cited by
106References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Dec 12, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L21/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of forming a cuff on a section of tubular pipe which defines first and second ends and inner and outer surfaces. The method comprises the initial step of applying an outer layer of polymer material to a portion of the outer surface of the pipe such that a portion of the outer layer extends beyond and covers the first end of the pipe. Thereafter, an inner layer of polymer material is applied to a portion of the inner surface of the pipe. The inner layer is then blended into the outer layer so as to define a bull nose of the cuff which extends beyond the first end of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.