Safe
US4048926A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Jan 12, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2600/54
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.