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:
Dec. 01, 1981
Filed:
Jun. 19, 1980
Hans-Dieter Lehmann, Hechingen, DE;
Abstract
Columns for the treatment of a liquid with particulate material are disclosed comprising first and second layers of sheet material in face-to-face contact with each other, an inlet and an outlet located at points between the layers, and welds or the like for joining the layers together along a pair of substantially parallel paths between the inlet and the outlet in order to form an elongated space adapted to be filled with particulate material therebetween. In a preferred embodiment, the aforesaid column comprises a first column portion, and the column includes a second column portion which also includes layers of sheet material in face-to-face contact with each other, an inlet, an outlet, welds for joining the two layers of sheet material together along a pair of substantially parallel paths between the inlet and the outlet so as to form an elongated space adapted to be filled with the particulate material therebetween, and a tubular connector for connecting the outlet from the first column portion with the inlet to the second column portion so that liquid may be fed from the inlet to the first column portion through both column portions to the outlet from the second column portion for contact with the particulate material in both column portions.