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:
Oct. 19, 1999
Filed:
Oct. 02, 1997
Jerome S Pepi, Foxboro, MA (US);
Stephen James Nettleship, Lower Peover, Knutsford, Cheshire WA16 9QJ, GB;
Brian Ernest Daly, Stockport, Cheshire, SK5 6XS, GB;
Other;
Abstract
A thermally responsive frangible bulb containing a liquid which when heated expands to burst the bulb. In use the bulb may be positioned between a support and a sprinkler outlet cap such that when the bulb bursts the sprinkler outlet is opened. The bulb is at least partially filled with at least one halogen derivative of an aromatic hydrocarbon containing two or more halogen substituents such as 1,3-dichlorobenzene, or an aliphatic amide such a formamide. Use of these liquids enables a wide range of operating temperatures and a quick response operating time to be achieved.