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:
Mar. 10, 2015
Filed:
Oct. 31, 2011
David Goldstein, Porltand, OR (US);
David Goldstein, Porltand, OR (US);
Other;
Abstract
The present invention relates to a glass laboratory apparatus that includes a pre filter and a main filter to scrub solids from a gas using water filtration. A preferred embodiment of the present invention includes a main vessel adapted to hold a volume of a liquid such as water and an inlet conduit with an opening above the liquid level in the main vessel and an outlet below the surface of the liquid level in the main vessel. A pre filter arranges in the inlet conduit at a level above the liquid level in the main vessel. A main filter is located below the water level in the main vessel. A negative pressure is supplied to draw a gas through the first, pre-filter, through the water and second main filter.