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:
Apr. 22, 2003
Filed:
Jan. 10, 2001
Klaus Schulze, Gernrode, DE;
Mertik Maxitrol GmbH & Co. KG, Thale, DE;
Abstract
A thermal safety device for cutting off gas pipelines, wherein gas transfer is prevented by the safety device when temperature increases in the section of the gas pipeline placed downstream from the safety device, especially when connected gas apparatuses are in a closed position maintains production costs and dimensions at a level as low as possible. The safety device includes a check valve which prevents backflow from the gas pipeline which is placed downstream from the device. The inventive device also includes a pressure sensitive element placed downstream from the safety device which is actuated by the pressure in the pipeline. The pressure sensitive element is coupled to a cut-off valve in such a way that when pressure increases in the downstream pipeline the valve prevents gas from flowing into the pipeline.