Plastic lined fittings for use with flangeless piping systems
US5954371A · kind A · utility
15Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Apr 14, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L47/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Plastic-lined fittings and their method of manufacture. The fittings are capable of being joined without flanges to plastic-lined piping systems. The fittings feature a zero tolerance fit between the liner and the metal portion of the fitting, and an outward expansion of the portion of the liner which extends past the metal portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.