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:
Jun. 08, 1982
Filed:
Aug. 16, 1977
Applicant:
Inventor:
Harald Michael, Hamburg, DE;
Assignee:
Electrolux GmbH, Hamburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210170 ; 4345 ; 137205 ; 1372 / ;
Abstract
A vacuum drain system having alternating ascending and descending sections in a conduit for conveying a liquid, such as waste water, to a collector tank maintained under vacuum to induce liquid flow through the conduit. At least one of the descending conduit sections is of larger cross section than an adjacent ascending section to facilitate flow of liquid through the conduit.