The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 1976
Filed:
Mar. 10, 1975
Howard E Tucker, Los Alamos, NM (US);
James A Corll, Los Alamos, NM (US);
Walter R Hogg, Miami Lakes, FL (US);
Particle Technology, Inc., Los Alamos, NM (US);
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 One of the conduits is coupled to a source of positive pressure and the other leads to a destination for the withdrawn sample. The open top sample container is coupled to the sample head and both are introduced into the compartment. A positive pressure is introduced to the sample container which first forces the piston upwards to expand the O-ring establishing a pressure-type seal between it and the inner wall of the vessel. The positive pressure is increased to force liquid from the container.