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. 29, 1990
Filed:
Feb. 02, 1989
Donald A Toon, Burlington, CA;
Douglas J Belshaw, Georgetown, CA;
Solinst Canada Limited, Ontario, CA;
Abstract
The sampler includes a cylinder, plugged at the lower end, the plug having a first one-way check valve to permit the sample to flow upwards into the chamber. A piston is slidable in the bore, and includes a second one-way check valve, which permits the sample to flow upwards through the piston. In use, the sampler is pressurized from above, in order to hold both valves closed, and lowered to the correct depth; the pressure is released, and the sample flushes through the chamber of the sampler. The sampler is then re-pressurized, and drawn to the surface, with the sample remaining totally contained and maintained at depth-pressure. The sample may be transferred out of the chamber for analysis, by pressurizing the piston, without the sample losing its depth-pressure status.