Reinforcement fitting
US6467813B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1998 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Sep 30, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/12751
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A reinforcement fitting provides shrinkage and expansion capabilities while maintaining sealability at the connection between existing pipes. The reinforcement fitting includes an externally fitting portion with an inside diameter that can fit over the existing pipes, a contact member installed in a recessed portion formed on the inside of the externally fitted portion having a tapered contact surface and a contact portion to contact with an outer surface of one of the existing pipes wherein contact resistance with one of the existing pipes increases when an external force is exerted in the direction to separate the existing pipes, an engagement portion which is able to engage with a flange portion of the other existing pipe when the external force is exerted in the direction to separate the existing pipes, and a cut out portion formed at an outer side of the reinforcement fitting for establishing a clearance for a protruded portion used in connecting the existing pipes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.