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:
Sep. 20, 1977
Filed:
Jan. 12, 1976
John D Brush, Jr, Webster, NY (US);
George M Burgess, Webster, NY (US);
John D. Brush & Co., Inc., Rochester, NY (US);
Abstract
A safe has a self-sealing jamb where the door confronts and fits together with the box. This is done by forming the confronting surfaces in the jamb region of a resin material and making the jamb region non-linear in cross section and long enough in cross section so that after an outer portion of the resin material is burned off in a fire, a charred residue and a plasticized portion of the resin material remain in the jamb region to seal the door to the box around the jamb region for substantially preventing heat conduction or passage of hot gasses through the jamb region to the interior of the box. The safe can also be formed in a resin mold for the box and the door with the mold remaining in place when the safe is used. The mold is preferably filled with a non-flammable, thermal insulating material having a substantial volume of chemically bonded water and made thick enough to maintain the interior of the box below 180.degree. C for one hour in an ambient atmosphere of about 927.degree. C. The box then lacks any external metallic shell so that the molded insulating material is exposed directly to the ambient atmosphere after the exterior resin casing is burned off in a fire. This also improves the heat resistance of the safe.