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Publication numberUS3333641 A
Publication typeGrant
Publication dateAug 1, 1967
Filing dateFeb 17, 1966
Priority dateFeb 17, 1965
Also published asDE1548964A1, DE1548964B2
Publication numberUS 3333641 A, US 3333641A, US-A-3333641, US3333641 A, US3333641A
InventorsHansom Bernard S, Leonard Abigail Walter
Original AssigneeHansom Bernard S, Leonard Abigail Walter
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Discharge indicator for fluid containers
US 3333641 A
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Description  (OCR text may contain errors)

United States Patent Office, 3,333,641

Patented Aug. 1, 1967 3 333 641 cator pin 21 is displaced by the stopper 11 it also serves DISCHARGE b cf o FOR FLUID to interrupt an electric circuit and this interruption of CONTAINERS the electric circuit is used to cause a change of state Bernard S. Hansom, 3 Foxherne, Turner Road, Langley, in the operation of an electrically-operated indicator.

England, and Walter Leonard Abigail, 105 Grosvenor 5 The indicator shown diagrammatically at 25 may, for Road, Staiues, England example, be electromagnetically operated and normally F f 1966, P- energized from an electrical source 26 so that when the clam Pnonty, apphcahon Great 1965 circuit is interrupted the indicator 25 is de-energized,

5 g: g ghe deenergized state indicating that the extinguisher has 10 een discharged.

This invention relates to containers for fluids and the It will be understood that the electrically-operated inlike, which term is intended to cover solids which are dicator may be located remotely from the extinguisher sufficiently divided to flow like a fluid. More particuto provide a remote indication of discharge which is larly it relates to fluid containers having a normally-sealed additional to the local indication provided by the projectdischarge outlet which is unsealed to permit discharge of ing end of the shank 21a of the pin 21. On the other hand, the contents of the container. Whilst the projecting end of the shank 21a provides a One example of containers to which the present invenlocal visible indication the interruption of the circuit may tion may be applied are fire extinguishers which contain be used to operate an audible indicator additional to any fire extinguishing liquid or powder. remote visual indication.

According to the present invention there is provided The interruption of the electric circuit by displacement a fluid container having a normally-sealed discharge outlet of the indicator pin 21 results from the fact that a portion and comprising a member which is automatically dis- 22a of an insulation covered wire 22 passes through a placed when said discharge outlet is unsealed, displacehole in the shank 21a of the indicator pin 21. When the ment of said member being adapted to sever an electrical pin 21a is displaced the wire 22 is severed. The wire 22 conductor whereby when said electrical conductor is con- 25 extends from both ends of the portion 22a to the exterior nected in electrical circuit with an electrically operated of the junction box cap 20 to provide electrical connecdischarge-indicator the indicator is operated to indicate tions to the indicator 25 and source 26, this circuit being that the fluid container has been discharged. interrupted by severing of the wire 22 to effect operation The invention also provides a junction box cap for a of the indicator 25 upon displacement of the indicator pin fluid container comprising: 21. After shearing of the wire the two ends are retained An open-topped cylindrical wall and a closed base, in position in the junction box cap 20 by crimped sleeves said base having a first aperture extending therethrough 23 provided on the insulated covering of the wire 22. and having second and third apertures extending there- To avoid any short circuit after operation the wire through and located on diametrically opposite sides of 22 is passed through holes in a washer 24 whose surface said first aperture. is electrically non-conducting. In addition any surfaces A pin having a head and a shank, the lower end of of the pin 21 which might come in contact with the said shank fitting in said aperture and the head being severed ends of the wire 22 are rendered non-conducting. positioned within the interior of the junction box cap, The pin 21 and washer 24 may be of aluminium which is said shank having a transverse hole therethrough, and anodized to render the surfaces non-conductive.

A wire, said wire passing through said second and third We claim: apertures with a mid-portion of said wire extending 1. In a fluid container having a discharge outlet northrough said transverse hole whereby said wire is severed mally sealed by a frangible member, by movement Of said pin resulting from an impact Of the a junction box cap for receiving the frangible memhead of said pin.

One construction of fluid container in accordance with 5 f invention will now be deScTiPed by W P example a pin having a head and a shank, said pin being mounted with reference to the accompanying drawing in which:

in said cap and being displaceable when said frangi- FIGURE 1 1s a part-sectional side elevation of the container whilst ble member is received in said cap, and

FIGURE 2 is a sectional side elevation of the junction 5 a wire said Wire F through said Shank i being box cap of the container and which illustrates the elec- Severed when said pm 18 dlsplaced by sald hangber when it is fractured to free said discharge outlet, said junction box cap having a base,

trical connections thereto. f

This particular construction of container is designed A fluld container accordmg clalm Wherem t contain fir extinguishing liquid or powder in the at least part of the surface of said pm is electrically inbottle shaped cylinder 10. Prior to discharge the outlet Sulatedof the cylinder 10 is sealed by a stopper 11 having a thin A fluid container according to claim wherein Said rim 11a which is severed by ignition of an explosive car- Win? has an insulated coveringtridge 12 when it is desired to discharge the pressurised A junction box p for a fluid container 'ccmprising contents of the cylinder 10. The stopper has a nut portion an p pp cylindrical Wall and a closed base, Said 11b secured by an internal screw-thread 110 on the nut base having a fi aperture extending therethrough,

portion to an external screw-thread 11d on the main having Second and third apertures extending stopper. The explosive gases resulting from ignitio of therethrough and located on diametrically opposite the cartridge 12 enter the space 13 above the nut portion sides of said first ape 11b and apply pressure thereto which fractures the thin a pin having a head and a shank, the lower end of said rim 11a, the stopper 11 being driven by the explosive shank fitting in said aperture and the head being gases into the cap 20 which is shown in detail in FIG- positioned within the interior of the junction box URE 2. cap, said shank having a transverse hole there- The stopper 11 strikes the discharge indicator pin 21 through, and

and displaces it so that one end projects beyond the a wire, said wire passing through said second and third outer surface of the cap 20 and serves to indicate that apertures with a mid-portion of said wire extending the extinguisher has been discharged. When the indithrough said transverse hole whereby said wire is 3 4 severed by movement of said pin resulting from an References Cited the head UNITED STATES PATENTS 5. A unction box cap according to claim 4, wherein said wire is connected in series electrical circuit with an 2,884,076 4/1959 Mathlsen 16928 X electrical source and an electrically energized member 5 whereby said member is fie-energized When said Wire is HENSON WOOD Primary Examiner severed. H. NATTER, Assistamt Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2884076 *Aug 21, 1957Apr 28, 1959Graviner Manufacturing CoFluid containers
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3664430 *Oct 6, 1970May 23, 1972Htl IndustriesElectrical monitor for fire extinguisher
US3956604 *Jun 19, 1974May 11, 1976Allmanna Svenska Elektriska AktiebolagetHigh pressure apparatus having means for detecting a leakage
US4003395 *Jul 28, 1975Jan 18, 1977Systron Donner CorporationQuick-opening valve operated by explosive charge
US4637472 *Jun 6, 1985Jan 20, 1987Abg SemcaRapid discharge extinguisher
US4715448 *Jul 15, 1985Dec 29, 1987Mcculloch Alister LFire extinguisher outlet head
US5038866 *Aug 27, 1990Aug 13, 1991Santa Barbara Research CenterPowder discharge apparatus
US5232053 *Aug 24, 1990Aug 3, 1993Fenwal Safety Systems, Inc.Explosion suppression system
US5775430 *Jan 23, 1996Jul 7, 1998Mija Industries, Inc.Electroluminescent signalling fire extinguisher
US5848651 *Jun 20, 1997Dec 15, 1998Mija Industries, Inc.Signalling fire extinguisher assembly
US6302218Dec 15, 1998Oct 16, 2001Mija Industries, Inc.Signalling portable pressurized equipment assembly
US6311779Dec 20, 2000Nov 6, 2001Mija Industries, Inc.Signalling fire extinguisher assembly
US6488099Nov 19, 2001Dec 3, 2002Mija Industries, Inc.Remote fire extinguisher station inspection
US6585055Apr 11, 2001Jul 1, 2003Mija Industries, Inc.Remote fire extinguisher station inspection
US7174769Feb 19, 2004Feb 13, 2007Mija Industries, Inc.Monitoring contents of fluid containers
US7174783Jul 26, 2004Feb 13, 2007Mija Industries, Inc.Remote monitoring of fluid containers
US7188679Oct 21, 2002Mar 13, 2007Mija Industries, Inc.Remote fire extinguisher station inspection
US7271704Jun 8, 2004Sep 18, 2007Mija Industries, Inc.Transmission of data to emergency response personnel
US7450020May 6, 2005Nov 11, 2008Mija Industries, Inc.Signaling pressure detection assembly
US7574911Sep 20, 2006Aug 18, 2009Mija Industries, Inc.Remote fire extinguisher station inspection
US7726411Apr 21, 2005Jun 1, 2010En-Gauge, Inc.Remote fire extinguisher station inspection
US7728715Mar 2, 2005Jun 1, 2010En-Gauge, Inc.Remote monitoring
US7891241Jul 16, 2009Feb 22, 2011En-Gauge, Inc.Remote fire extinguisher station inspection
US7891435Jul 8, 2003Feb 22, 2011En-Gauge, Inc.Remote inspection of emergency equipment stations
US7895884Jan 11, 2007Mar 1, 2011En-Gauge, Inc.Monitoring contents of fluid containers
US8009020Mar 3, 2010Aug 30, 2011En-Gauge, Inc.Remote monitoring
US8210047Feb 1, 2010Jul 3, 2012En-Gauge, Inc.Remote fire extinguisher station inspection
US8248216Aug 2, 2011Aug 21, 2012En-Gauge, Inc.Remote monitoring
US8350693Jan 23, 2012Jan 8, 2013En-Gauge, Inc.Transmission of data to emergency response personnel
US8421605Apr 20, 2012Apr 16, 2013En-Gauge, Inc.Remote monitoring
US8607617Apr 2, 2012Dec 17, 2013En-Gauge, Inc.Oxygen tank monitoring
US8610557Nov 29, 2012Dec 17, 2013En-Gauge, Inc.Transmission of data to emergency response personnel
US8701495Oct 30, 2012Apr 22, 2014En-Gauge, Inc.Remote fire extinguisher station inspection
US8749373Feb 13, 2009Jun 10, 2014En-Gauge, Inc.Emergency equipment power sources
Classifications
U.S. Classification169/26, 169/23, 200/61.8, 169/28
International ClassificationA62C37/00, A62C13/00, H01H3/00, A62C37/50, F17D5/02, F17D5/00
Cooperative ClassificationA62C13/003, H01H3/00, F17D5/02, A62C37/50
European ClassificationF17D5/02, A62C13/00B, H01H3/00, A62C37/50