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. 17, 2000
Filed:
Jun. 05, 1998
Joseph Philipson, Pasadena, CA (US);
Hi-Shear Corporation, Torrance, CA (US);
Abstract
A sealant for forming a fluid seal between the faying surface of two metallic substrates that are compressively and mechanically joined together. The sealant is a liquid in its pre-cured condition and a dry solid in its cured condition. The transition of the sealant from its pre-cured condition to its cured condition occurs at room temperature. The sealant's curing time is not less than about 10 minutes and not more than about 16 hours. The cured sealant has a Shore A hardness between about 30 and 70. The cured sealant is impermeable and resistant to chemical attack by air, water, common solvents and petroleum fuels. Also, the cured sealant is resistant to compressive cold flow, however, the cured sealant is deformable to conform to an abutting surface or with a layer of similar sealant. The cured sealant is flexible and resistant to temperatures between about -65 degrees F. and about 250 degrees F. The sealant is formed by curing a mixture containing an isocyanate having at least two functionalities, a polyol having at least two functionalities, and between about 1% and 50% barium chromate, strontium chromate or zinc chromate by weight of the sealant.