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. 18, 1990
Filed:
Nov. 13, 1989
Hans Oberdorfer, Stuttgart, DE;
Hansa Metallwerke AG, Stuttgart, DE;
Abstract
A pipe interrupter, which is particularly suitable for installation in a sanitary fitting, comprises in a housing a chamber, into which a water-supply passage, a water-discharge passage and a ventilation path open. Located in the chamber is a rolling membrane, which is fixed at the peripheral region. Normally, thus as long as there is no reduced pressure in the supply passage, the rolling membrane bears in the central region against the opening aperture of the ventilation path in the chamber, so that on the one hand no atmospheric air may enter and on the other hand no water may escape. However, if reduced pressure occurs in the pipe system, which is connected to the supply passage, then the rolling membrane overturns so that now on the opposite side of the central region it closes the opening point of the supply passage into the chamber. On the other side, a ventilation path to the chamber is exposed. This ventilation path continues by way of a through-flow opening in the edge region of the rolling membrane towards the discharge passage. In this way, water can no longer flow back into the supply passage and into the pipe system connected thereto; on the other hand, the water-ways following the chamber are ventilated.