Liquid sampling and container handling apparatus
US3955436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1975 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Mar 10, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2071
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Liquid sampling apparatus including a sampling head incorporating a floating pressure seal effected by a positive pressure introduced into an open top sample container in which the sampling head is telescopically introduced. The liquid sampling apparatus includes a compartment having at least an entrance, a cover slidable within said compartment and the sliding cover carrying the sampling head. The sliding cover has a depending shield capable of closing off the entrance to the compartment when the assembly head is therein introduced. The floating pressure seal is defined by a mounting ring seated in a suitable passageway formed in the cover. The mounting ring has a central aperture and a plunger is slidable within said aperture, one end of the plunger being threaded and having an adjusting ring threadably engaged thereupon for limiting the extent of free movement of the plunger relative to the mounting ring. The other end of the plunger has an enlarged head or piston. The mounting ring and the plunger have facing tapered surfaces defining a groove and an expandable O-ring is seated therewithin. A pair of parallel conduits are provided passing through the plunger and piston. One of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.