GB2221041A - Security device for gas meter - Google Patents

Security device for gas meter Download PDF

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Publication number
GB2221041A
GB2221041A GB8817565A GB8817565A GB2221041A GB 2221041 A GB2221041 A GB 2221041A GB 8817565 A GB8817565 A GB 8817565A GB 8817565 A GB8817565 A GB 8817565A GB 2221041 A GB2221041 A GB 2221041A
Authority
GB
United Kingdom
Prior art keywords
union
conduit
housing
gas meter
arms
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Withdrawn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
GB8817565A
Other versions
GB8817565D0 (en
Inventor
Craig Taylor
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 GB8817565A priority Critical patent/GB2221041A/en
Publication of GB8817565D0 publication Critical patent/GB8817565D0/en
Publication of GB2221041A publication Critical patent/GB2221041A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/007—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus comprising means to prevent fraud
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

A tamper-detecting device for a gas meter incorporating an inlet-let conduit connected to the gas meter by a union having a diameter greater than the diameter of the conduit the device comprising a housing (1) for the union and provided with a pair of opposed walls (8), (9) each having an aperture (A) large enough to permit passage of the conduit but not of the union the device incorporating a locking means (10) for securing the union within the housing. <IMAGE>

Description

Tamperproof Device This invention relates to a tamperproof device for attachment to a gas meter to prevent unauthorised use of gas.
Gas from a mains supply enters a premises of a consumer from a gas mains by an inlet pipe which is connected to a gas meter. An outlet pipe from the meter is in turn connected to various gas consuming appliances such ao a fire or a central heating boiler. Whenever an appliance is used, gas passes through the meter and the volume which has been used is recorded.
A problem which confronts suppliers of gas stems from the fact that on occasion some consumers disconnect the meter which they then reconnect back to front. As a result the meter does not measure correctly the amount of gas whch has been used by the appliance. The present invention is directed to a tamperproof device which ensures that if the inlet pipe is at any time temporarily disconnected the fact that this action has been taken will be readily detectable.
Accordingly this invention provides a tamperproof device for a gas meter incorporating an inlet conduit connected to the meter by a union having a diameter greater than the diameter of the conduit the device comprising a housing for the union, an aperture large enough to permit entry of the conduit but insufficiently large to permit passage of the union the device incorporating tamperproof locking means for retaining the union within the device.
Ihis invention is illustrated but not restricted by the following drawings in which;- Figure I is a view taken in perspective view of one preferred form of device according to the invention.
Figure 2 is a side view taken in vertical section showing the device illustrated in Fig.l attached to a gas meter. In these figures the device consists of an approximately U shaped member shown generally as numeral 1 which conveniently can be made of sheet metal. Other constructional materials can be used provided that if they are subjected to distorting forces, they either break or otherwise display signs of having being distorted. Those member comprises a base or end portion (2) and arms (3 & ) which form what is in effect a container for accommodating a union (5) connecting inlet pipe (6) with a gas meter (7). Members (3 & ) are each provided with shoulders (8 & ) which are spaced apart by distance A which is just sufficient to accommodate inlet (6) but is less than the diameter of union (5). The latter is contained withn the body of the device.A locking pin (10) provided at one end with a pin head (11) and at the other end with an aperture (12) is located slidably in opposing holes in arms (3 & ).
In use, pin (10) is removed and the device is slid onto the union until the latter is located between the pairs of shoulders (8 & ). Since the distance A between the shoulders is just slightly greater than the diameter cfinlet pipe (6) the device can rotate freely around the pipe. However it is unable to slide along the pipe and to expose the union because the latter having a diameter greater than the the distance of separation (A) of the shoulders cannot move past them. When the union has been positioned correctly pin (10) is replaced and a seal (13) is applied. It will be appreciated that if pipe (6) is to be disconnected either the seal (13) has to be removed or the body of the device has to be cut away or sufficently distorted to permit access to the union. In any of these cases if such actions were carried out they would be readily detectable.

Claims (6)

Claims
1. A tamper-detecting device for a gas meter incorporating an inlet conduit connected to the gas meter by a union having a diameter greater than the diameter of the conduit the device comprising a housing for the union and provided with a pair of opposed walls each having an aperture large enough to permit passage of the conduit but not of the union the device incorporating locking means for securing the union within the housing.
2. A device according to Claim 1 wherein the housing is a hollow U shaped body and the arms of the housing are spaced apart sufficiently to permit passage of the conduit but not of the union.
3. A device according to Claim 2 wherein the U shaped body comprises two arms each provided with a pair of inwardly directed shoulder portions which are spaced apart sufficiently tp permit passage of the conduit but not the union
4. A device according to either of claims 2 & the locking means comprises a pin passing through opposing holes in the arms of the U shaped housing and the pin is provided with tamper detecting means.
5. A device according to Claim 3 wherein the tamper detecting means comprises a seal secured to the end of the pin
6. Tamper detecting devices as hereinbefore described with particular reference to the drawings.
GB8817565A 1988-07-22 1988-07-22 Security device for gas meter Withdrawn GB2221041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8817565A GB2221041A (en) 1988-07-22 1988-07-22 Security device for gas meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8817565A GB2221041A (en) 1988-07-22 1988-07-22 Security device for gas meter

Publications (2)

Publication Number Publication Date
GB8817565D0 GB8817565D0 (en) 1988-08-24
GB2221041A true GB2221041A (en) 1990-01-24

Family

ID=10640978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8817565A Withdrawn GB2221041A (en) 1988-07-22 1988-07-22 Security device for gas meter

Country Status (1)

Country Link
GB (1) GB2221041A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087020A (en) * 1980-11-03 1982-05-19 Rockwell International Corp Tamper proof gas meter
GB2160282A (en) * 1984-06-05 1985-12-18 George Brookes Security cover
GB2162606A (en) * 1984-08-02 1986-02-05 British Gas Corp Anti-tampering device for a pipe joint
GB2185797A (en) * 1986-01-28 1987-07-29 Wayne Michael Marsden Security device for pipe joints

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087020A (en) * 1980-11-03 1982-05-19 Rockwell International Corp Tamper proof gas meter
GB2160282A (en) * 1984-06-05 1985-12-18 George Brookes Security cover
GB2162606A (en) * 1984-08-02 1986-02-05 British Gas Corp Anti-tampering device for a pipe joint
GB2185797A (en) * 1986-01-28 1987-07-29 Wayne Michael Marsden Security device for pipe joints

Also Published As

Publication number Publication date
GB8817565D0 (en) 1988-08-24

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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)