Safety indicator for an inflation system
US5597091A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Feb 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A discharge monitoring system for a compressed gas cylinder incorporates a seal rupturing pin mounted in a gas passage that is intended to connect to a conventional triggering mechanism for activating the seal rupturing pin connects to the object to be inflated. A chamber divided by a piston into a high pressure side which is directly connected to the gas passage and a lower pressure side on the opposite side of the piston. A flag or indicator associated with the piston is move into a flagging position when a high gas pressure is present in the gas passage and moves the piston to a displaced position. With this system, an initial high pressure formed in the gas passage immediately after the gas cylinder seal is punctured, develops a gas pressure within the chamber sufficient to displace the piston. The piston is fictionally held in its initial position indicating the cylinder is charged or after discharge in its displaced position indicating the cylinder has been discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.