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. 02, 1981
Filed:
Jan. 07, 1980
Louis M Michaud, Port Elgin, CA;
Nova Scotia Research Foundation Corporation, Nova Scotia, CA;
Abstract
A device for detecting and indicating the presence of corrosive fluids in a specified volume, as in the insulating blanket surrounding the pipes in a heavy water plant, is disclosed. The device includes a housing containing a primary indicator such as a bobbin with a long, brightly colored ribbon wrapped therearound, and a secondary indicator. A compression spring abuts the secondary indicator and is held in compression by a corrodable link anchored at one end to the housing and at the other end to the secondary indicator. The link is exposed to the volume being monitored and if there is a corrosive fluid present the fluid will corrode the link until it breaks. The spring force is released to act on the secondary indicator to project the primary indicator from the housing. The ribbon unwinds from the bobbin to provide a visual indication of the presence of the corrosive fluid. The device of the present invention is reliable and inexpensive and can be readily produced in various and adjustable sizes to accommodate many applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile