High pressure coupling apparatus
US4311248A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1980 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Dec 29, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L23/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Concrete pumping conduits are connected by releasable hinged couplers. The ends of the conduits include metal pipes formed with annular grooves including a circular peripheral base. The coupler has a cup-shaped cross-section and a sealing gasket is located within the base of the cup-shaped recess with a tongue-like ridge projecting between the two end faces of the pipe ends. The tongue is formed with a rectangular or triangular cross-section. The gasket is provided with small recesses adjacent the ridge with inclined outer sidewalls defining lips in sealing engagement with the conduit. The peripheral ends of the pipes are chamfered and engaged by the sealing lips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.