Pipe belling apparatus
US4428722A · kind A · utility
0Cited by
6References
11Claims
0Family size
Inventors
Key dates
| Filing date | Jun 22, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Jun 22, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/218
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for automatically forming a bell-shaped socket on an end of thermoplastic pipe or the like. The apparatus includes a stripper plate separate from the belling mandrel, and positioned to be engaged and carried by the mandrel during a belling operation. The stripper plate carries a switch which is engaged by the end of the pipe when a predetermined bell depth is attained by the mandrel. Automatic control circuitry is disclosed to initiate a cooling water spray, to retract the mandrel, and to signal the absence of a good bell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.