Safes – bank protection – or a related device – Combined – With fluent material releasing – generating and/or...
Patent
1982-01-20
1984-07-24
Hirsch, Paul J.
Safes, bank protection, or a related device
Combined
With fluent material releasing, generating and/or...
109 20, 109 77, E05G 112
Patent
active
044612222
ABSTRACT:
In the event of an alarm being raised (e.g. by a sensor 34) by an attempt at breaking into a protected space (36) such as a safe or a strong room, a rapidly hardening foam is suddenly projected around or into the space to be protected. The expanding foam can also be used to drive additional door-barring means into position. The foam may be made by mixing two components that react together. The components can then be stored in tanks (23, 24), where they occupy little volume until the alarm is raised. The components are mixed in a mixing head (27) and projected into the space through a nozzle (28).
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Brunner Jean-Michel
Deschamps Daniel
Fichet-Bauche
Hirsch Paul J.
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