Fire extinguishing system of the type including container and driven probe against a seal for release of material
US4313501A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | May 12, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C37/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A fire extinguishing system including a vessel having an outlet normally sealed by a frangible seal. A probe is aligned with the seal and is mounted for movement in a path intersecting the seal and spring biases the probe toward the seal in the path. A restraint is provided for normally restraining the probe in the path to prevent breakage of the seal and includes a radially outwardly opening annular groove in the probe, a series of spherical elements disposed such that they partially enter the groove, and a movable cam which abuts the spherical elements oppositely of the groove and which is configured to cam the elements partially into the groove. A releasable latch holds the cam in abutment with the spherical elements and the elements, the cam and the groove are constructed and arranged such that upon release of the latch, the spring will drive the probe to move the spherical elements against the unlatched cam and move the same to a position whereat the spherical elements are out of the groove to fully release the probe for movement toward the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.