WO1994018651A1 - Container having an audible warning device and devices therefor - Google Patents
Container having an audible warning device and devices therefor Download PDFInfo
- Publication number
- WO1994018651A1 WO1994018651A1 PCT/EP1994/000331 EP9400331W WO9418651A1 WO 1994018651 A1 WO1994018651 A1 WO 1994018651A1 EP 9400331 W EP9400331 W EP 9400331W WO 9418651 A1 WO9418651 A1 WO 9418651A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- radiation
- lid
- audible
- warning
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
Definitions
- This invention relates to a container having an audible warning device and particularly to a container for light-sensitive materials.
- a common problem when working with photosensitive media such as photographic or radiographic paper or films or a phosphor material is that if their container is accidentally left open in the dark, the material may become exposed to light and wasted when, accidentally, a light is switched on or a door is opened. Occasionally the container may be opened when the light is on thus fogging the photosensitive contents.
- a container containing or adapted to contain radiation-sensitive media comprising an audible indicator means and a switching means which triggers the audible indicator means when an operator opens the container.
- Fig 1 is a perspective view of a container according to the present invention
- Fig 2 is a cross-section of another container according to the present invention
- Fig 3 is a schematic view of a switching and signal generating device which can be used in the present invention
- Fig 4 is a schematic diagram of the complete circuitry required for an embodiment of the present invention.
- the container must, of course, be light-tight when closed.
- the preferred container has a body and a lid.
- the alarm may sound when the container is opened or when it has been open for a period of time, or both.
- the present invention also provides a device comprising an audible indicator means, a switching means which is capable of triggering the audible indicator means and a radiation-sensitive means which is capable of modifying the behaviour of the indicator means.
- the container comprises thereon or therein radiation sensor means which may modify the behaviour of the audible and/or visible indicator means according to the ambient radiation conditions sensed by said sensor means.
- radiation sensor means may be a radiation-sensitive diode, transistor, resistor or similar electronic component which may, for example, be sensitive to visible light, X-rays, gamma rays, UV or infrared radiation.
- the container comprises a second warning means which can emit radiation of a wavelength or level which does not fog the radiation sensitive media.
- a second warning means which can emit radiation of a wavelength or level which does not fog the radiation sensitive media.
- Examples of such means are an electric light bulb whose light passes through an appropriate filter, and a light-emitting diode which emits radiation of an appropriate wavelength or whose light passes through an appropriate filter.
- the radiation emitted comprises radiation, invisible to the human eye, for example infrared or radio frequency.
- the radiation emitted by the second warning means activates sensing and switching means in the darkroom which is capable of preventing the darkroom lights from being switched on.
- a delay of a few seconds is introduced when the box is opened in a dark environment (sensed by the radiation sensor) and before the alarm is sounded. This allows the material to be removed from the container and the box closed before the alarm sounds.
- the second warning means if present, can be activated as soon as the container is sufficiently open.
- an audible or visible warning is given immediately the container is opened, after which there is a pause of a few seconds for some media to be removed and then another alarm is triggered to remind the operator to close the container.
- the first warning is preferably rather short, eg a "bleep", while the second warning is longer or continuous indicating that the container is still open and needs to be shut.
- the radiation (eg visible light radiation) sensor is provided on the container which will cause a continuous alarm to be triggered when the box is opened sufficiently to trigger the switch in the presence of ambient light which would otherwise fog the radiation sensitive media.
- the audible warning device may produce a "bleep", continuous tone or buzz, a musical tune or speech, for example recorded speech or speech from an electronic speech synthesiser.
- the radiation emitted by the second warning means may remotely activate a sensor in the darkroom which is capable of preventing the darkroom lights from being switched on. Clearly this is wired into the darkroom electrical system and does not form part of the container or device.
- the elements of the warning device may be attached to the lid and body of the container in any suitable location. In one embodiment it is mounted as part of the normal labelling process.
- the label normally seals the lid to the body of the container hence when the seal is broken the two parts of the switching device are separated and automatically sited in their correct positions. In such an arrangement it is clearly preferred to have components (including the battery) which can be arranged in a flat configuration underneath the label.
- the switching device may use one or two magnets.
- a magnet may be present on the lid and a reed switch mounted in the body of the container.
- Another arrangement can use two magnets to keep the switch normally open while one of them closes it when moved away.
- a Hall effect device may be used.
- the switching device may be a mechanical switch, eg a microswitch.
- Further useful switching devices are proximity switches, for example of the capacitative or inductive types.
- a light-emitting device and a light sensitive device may together be used to detect the opening of the lid by the removal or addition of an opaque barrier between them. Other proximity devices can also be used.
- the audible warning means may comprise a miniature loudspeaker or, preferably, a piezo-electric transducer driven by a suitable oscillator or other audio frequency signal generating device.
- Figure 1 illustrates a side-opening film container (1) with lid (2) .
- a magnetic strip (3) is mounted on the lid while the remainder of the device
- (4) is mounted on the container, for example with double sided adhesive tape or pads. The removal of the magnetic strip (3) from its closed position activates the switching means in (4) .
- Figure 2 illustrates a top-opening film container
- the magnetic strip (8) and the rest of the switching and audible signal means (9) are mounted on the lid and inside the body as shown.
- FIG. 3 illustrates the electronic componentry and battery arrangement within a device according to one embodiment of the invention.
- Mounted in casing (10) are batteries (11) , a light sensitive device
- a piezo-electric transducer (13) a piezo-electric transducer (13) , a reed switch or magnetised reed switching member (14) and a magnet (15) to close the reed switching member.
- a magnet on the lid not shown
- the internal magnet's (15) field will be cancelled and the reed switch will remain open.
- Other components may include an oscillator and a timer.
- the lid of the container will trigger the reed (14) which then switches on the warning device.
- the light sensitive device can be used to determine whether the ambient conditions are light or dark and affect the behaviour of the device accordingly.
- Fig 4 is a block diagram showing the essential • elements and electrical connections of a device which can be used in the present invention.
- the device comprises a battery (18) , switch (19) operable by opening the lid of the container, an oscillator (16) and piezo-electric transducer (17) .
- the oscillator unit may also contain timing (or delay) circuitry, a light sensitive device and/or other sound generating elements.
- the circuitry of fig 3 is designed for two modes of operation: 1. In the presence of low ambient light levels, as detected by a light sensor (12) and optional filter combination sensitive to the same light wavelengths to which the media is sensitive, delay circuitry will be activated by the opening of the lid and consequent closure of the reed switch to allow manipulation of the contents of the container for a predetermined period of time before the alarm is sounded. However a visual indicator such as a light emitting diode may be illuminated with no delay to indicate that the container is open.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6517644A JPH07506689A (en) | 1993-02-08 | 1994-02-07 | Storage container with alarm device and its alarm device |
EP94906224A EP0635154A1 (en) | 1993-02-08 | 1994-02-07 | Container having an audible warning device and devices therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9302458.6 | 1993-02-08 | ||
GB939302458A GB9302458D0 (en) | 1993-02-08 | 1993-02-08 | An audible warning device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994018651A1 true WO1994018651A1 (en) | 1994-08-18 |
Family
ID=10730046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/000331 WO1994018651A1 (en) | 1993-02-08 | 1994-02-07 | Container having an audible warning device and devices therefor |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0635154A1 (en) |
JP (1) | JPH07506689A (en) |
GB (1) | GB9302458D0 (en) |
WO (1) | WO1994018651A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2329994A (en) * | 1997-09-08 | 1999-04-07 | Safecash Technologies Pty Ltd | A security case alarm |
CN105167508A (en) * | 2015-10-29 | 2015-12-23 | 成都小爱未来智慧科技有限公司 | Intelligent cup capable of recognizing whether cup cover is screwed off or not |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4516185B2 (en) * | 2000-05-25 | 2010-08-04 | 株式会社ビーエムシー | Displacement detector |
JP2006031188A (en) * | 2004-07-13 | 2006-02-02 | Hayashi Kawakami | Opening/closing time recorder |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4151507A (en) * | 1977-08-08 | 1979-04-24 | Willis Billy R | Vehicle alarm system |
US4255745A (en) * | 1979-04-18 | 1981-03-10 | Rohan Joseph J | Apparatus for audible altering of enclosure opening |
US4750197A (en) * | 1986-11-10 | 1988-06-07 | Denekamp Mark L | Integrated cargo security system |
-
1993
- 1993-02-08 GB GB939302458A patent/GB9302458D0/en active Pending
-
1994
- 1994-02-07 WO PCT/EP1994/000331 patent/WO1994018651A1/en not_active Application Discontinuation
- 1994-02-07 EP EP94906224A patent/EP0635154A1/en not_active Withdrawn
- 1994-02-07 JP JP6517644A patent/JPH07506689A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4151507A (en) * | 1977-08-08 | 1979-04-24 | Willis Billy R | Vehicle alarm system |
US4255745A (en) * | 1979-04-18 | 1981-03-10 | Rohan Joseph J | Apparatus for audible altering of enclosure opening |
US4750197A (en) * | 1986-11-10 | 1988-06-07 | Denekamp Mark L | Integrated cargo security system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2329994A (en) * | 1997-09-08 | 1999-04-07 | Safecash Technologies Pty Ltd | A security case alarm |
US6065408A (en) * | 1997-09-08 | 2000-05-23 | Safecash Technologies Limited | Security case |
GB2329994B (en) * | 1997-09-08 | 2001-08-08 | Safecash Technologies Pty Ltd | Security case |
CN105167508A (en) * | 2015-10-29 | 2015-12-23 | 成都小爱未来智慧科技有限公司 | Intelligent cup capable of recognizing whether cup cover is screwed off or not |
Also Published As
Publication number | Publication date |
---|---|
JPH07506689A (en) | 1995-07-20 |
EP0635154A1 (en) | 1995-01-25 |
GB9302458D0 (en) | 1993-03-24 |
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