Tubular end structure of pipe
US4034994A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1976 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Feb 5, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L47/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe joint in which an inner pipe is telescoped in an outer pipe includes a first and second expanded portion on the outer pipe. A packing member is disposed in the annular space between the second expanded portion and the inner pipe and a ring element is disposed in aligned annular grooves in the inner circumferential wall of the second expanded portion and the packing member. The ring element has a radial thickness equal to approximately one-half the difference between the inner diameters of the first and second expanded portions and serves to divide the packing member into two rim parts such that the latter are acted upon independently as the inner pipe is telescopically inserted into the outer pipe with the ring element preventing the rim parts from being axially displaced as the inner pipe is telescopically inserted in the outer pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.