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:
Nov. 21, 2000
Filed:
May. 24, 1999
Karsten Laing, La Jolla, CA (US);
Other;
Abstract
When a hot water supply line has to be filled with hot water at all times it requires that the contents of the hot water supply line has to be returned to the hot water heater by a circulator pump. When gas-bubbles form in the hot water supply line, they tend to form a bubble in the suction area of the pump impeller, which leads to an interruption of the flow. In order to prevent this, a circulator pump is used which has a calming chamber in which some of the gases separate, the rest of the air is moved into the spiral channel around the impeller due to an eccentricity of the vortex inside of the impeller. Finally also this gas stream flows into the calming chamber from where the gases leave through a venting valve.