Female pipe coupling member with annular seal ring
US4173362A · kind A · utility
25Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1977 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Apr 4, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/265
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pipe coupling formed by a tubular plastic member having at one end a portion of increased diameter defining an inwardly facing annular recess, and an annular sealing ring bonded therein by a foot portion substantially filling the recess and having a sealing head portion projecting partway across the interior of the coupling and secured to such foot portion by a neck portion. The seal ring configuration lends itself to injection molding of the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.