Grooved coupling protector
US4432394A · kind A · utility
6Cited by
8References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jun 21, 1982 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Jun 21, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L57/005
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A System for protecting the threaded cavities and the seal ring in a grooved A.P.I. coupling comprises first and second threaded portions separated by a substantially smooth portion, the second threaded portion being dimensioned so that it will freely pass through the space defined the seal ring when inserted into the threaded cavity during installation yet, due to the taper of the A.P.I. coupling, will engage a predetermined portion of threads therein below the seal ring to effect secure threaded engagement, the smooth portion being closely fitted against the seal ring to protect same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.