GB2273379A - Security alarm device - Google Patents

Security alarm device Download PDF

Info

Publication number
GB2273379A
GB2273379A GB9225719A GB9225719A GB2273379A GB 2273379 A GB2273379 A GB 2273379A GB 9225719 A GB9225719 A GB 9225719A GB 9225719 A GB9225719 A GB 9225719A GB 2273379 A GB2273379 A GB 2273379A
Authority
GB
United Kingdom
Prior art keywords
spring
balloon
scream
sounder
detent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9225719A
Other versions
GB9225719D0 (en
Inventor
Albert Edward Simpson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9225719A priority Critical patent/GB2273379A/en
Publication of GB9225719D0 publication Critical patent/GB9225719D0/en
Publication of GB2273379A publication Critical patent/GB2273379A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B15/00—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

A detent 2 retains a spring-loaded plunger 3 provided with a point 6. A balloon 7 is seated on a pressure plate 8 which is in turn mounted on air bellows 9 coupled to a sounder 10. The device can be mounted on the back of a door with the detent 2 coupled to a remote operating position. Release of the detent 2 allows the spring 4 to drive the plunger 3 into the balloon 7 causing a sound like a gunshot to be produced. The plunger then engages the pressure plate 8 causing the bellows 9 to be compressed and drive air through the sounder 10, causing a high pitched scream. <IMAGE>

Description

SECURITY DEVICE TECHNICAL FIELD OF THE INVENTION This invention relates to a security device which is intended to deter a potential thief in an attempted robbery.
SUMMARY OF THE INVENTION The present invention proposes a security device which can be triggered in the event of an attempted robbery to emit a bang and a scream, either in that order or reverse order.
In a shop or similar premises, the device may be installed on a door, or adjacent to a doorway. The device may be arranged to be operated remotely, e.g.
by a cashier or supervisor. Thus, should a potential robber enter the shop, the device can be operated to emit a bang like a gunshot and a scream-like sound behind the thief. In most cases this has the effect of startling the thief so that he will turn and run from the premises without proceeding further with the robbery.
BRIEF DESCRIPTION OF THE DRAWINGS The following description and the accompanying drawings referred to therein are included by way of non-limiting example in order to illustrate how the invention may be put into practice. In the drawings: Figure 1 is a sectional view of a security device of the invention.
DETAILED DESCRIPTION OF THE DRAWINGS The illustrated device has a housing 1 having a mechanically or electrically released detent 2. The detent 2 retains a plunger 3 which is axially biassed by a compression spring 4 or other suitable means.
After passing through a guide 5, the leading end of the plunger 3 is provided with a point 6 which is poised over a balloon 7. The balloon is seated on a pressure plate 8 which is in turn mounted above air bellows 9.
A sounder 10 is coupled to one end of the bellows 9 such that air from the bellows can be forced through a reed or similar device in the sounder 10 and pass out of the housing 1.
In the example of shop premises, the device can bemounted on the back of a door with the detent 2 operably coupled to a convenient operating position, e.g. under the counter or adjacent to a till. Should a potential robber enter the premises, the detent 2 can be released by one of the staff, allowing the spring 4 to urge the plunger 3 rapidly towards the balloon 7.
The tip 6 thus punctured the balloon causing a sound like a gunshot to be produced. Upon further downward movement under the action of the spring 4, the plunger 3 engages the pressure plate 8 causing the bellows 9 to be compressed. Air is thus emitted through the sounder 10, causing a high pitched noise simulating the scream of a human female.
This will invariably startle the thief so that he will turn and flee the premises and the attempted robbery will thus be foiled.

Claims (10)

1. A security device which can be triggered in the event of an attempted robbery to emit a bang and a scream, either in that order or reverse order.
2. A device according to Claim 1, which includes an inflated balloon and means for bursting the balloon to produce the bang.
3. A device according to Claim 2, which includes a spring-loaded plunger for bursting the balloon.
4. A device according to any preceding claim, which includes a set of bellows arranged to drive air through a sounder to produce the scream.
5. A device according to Claim 4, in which the bellows are driven by a spring-loaded plunger.
6. A device according to any preceding claim, in which the scream is produced by a sounder which includes an air-driven reed.
7. A device according to Claim 3 or 6, in which the spring-loaded plunger is normally held against spring-loading by a remotely-operated detent.
8. A device according to any preceding claim, which is installed on a door, or adjacent to a doorway.
9. A device according to any preceding claim, in combination with means for operating the device from a remote location.
10. A security device substantially as described with reference to the drawings.
GB9225719A 1992-12-09 1992-12-09 Security alarm device Withdrawn GB2273379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9225719A GB2273379A (en) 1992-12-09 1992-12-09 Security alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9225719A GB2273379A (en) 1992-12-09 1992-12-09 Security alarm device

Publications (2)

Publication Number Publication Date
GB9225719D0 GB9225719D0 (en) 1993-02-03
GB2273379A true GB2273379A (en) 1994-06-15

Family

ID=10726357

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9225719A Withdrawn GB2273379A (en) 1992-12-09 1992-12-09 Security alarm device

Country Status (1)

Country Link
GB (1) GB2273379A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296119A (en) * 1994-12-12 1996-06-19 Paul Steven Cooper Counter display and advertising unit incorporating an alarm
US6946960B2 (en) * 2002-12-28 2005-09-20 Pitney Bowes Inc. Active tamper detection system for electronic modules
US9761106B1 (en) 2016-09-28 2017-09-12 John C. Campbell Anti-intrusion device for simulating gun cocking

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941081A (en) * 1975-05-12 1976-03-02 Nakamura Sangyo Co., Ltd. Alarm for a bicycle
GB1557146A (en) * 1978-05-19 1979-12-05 Autec Ltd Gas operated bangers for bird and animal scaring or alarm sounding
GB2142181A (en) * 1983-06-23 1985-01-09 Harold Alec Payne Animal call

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941081A (en) * 1975-05-12 1976-03-02 Nakamura Sangyo Co., Ltd. Alarm for a bicycle
GB1557146A (en) * 1978-05-19 1979-12-05 Autec Ltd Gas operated bangers for bird and animal scaring or alarm sounding
GB2142181A (en) * 1983-06-23 1985-01-09 Harold Alec Payne Animal call

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296119A (en) * 1994-12-12 1996-06-19 Paul Steven Cooper Counter display and advertising unit incorporating an alarm
US6946960B2 (en) * 2002-12-28 2005-09-20 Pitney Bowes Inc. Active tamper detection system for electronic modules
US9761106B1 (en) 2016-09-28 2017-09-12 John C. Campbell Anti-intrusion device for simulating gun cocking

Also Published As

Publication number Publication date
GB9225719D0 (en) 1993-02-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)