GB2246417A - Built-in valve-locking mechanism - Google Patents

Built-in valve-locking mechanism Download PDF

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Publication number
GB2246417A
GB2246417A GB9012478A GB9012478A GB2246417A GB 2246417 A GB2246417 A GB 2246417A GB 9012478 A GB9012478 A GB 9012478A GB 9012478 A GB9012478 A GB 9012478A GB 2246417 A GB2246417 A GB 2246417A
Authority
GB
United Kingdom
Prior art keywords
valve
key
locking mechanism
spindle
built
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.)
Granted
Application number
GB9012478A
Other versions
GB2246417B (en
GB9012478D0 (en
Inventor
Kim Song Lam
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 GB9012478A priority Critical patent/GB2246417B/en
Publication of GB9012478D0 publication Critical patent/GB9012478D0/en
Publication of GB2246417A publication Critical patent/GB2246417A/en
Application granted granted Critical
Publication of GB2246417B publication Critical patent/GB2246417B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • F16K35/06—Means to prevent accidental or unauthorised actuation using a removable actuating or locking member, e.g. a key

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

A locking mechanism built inside a valve is operated, when the valve is closed, by an indexing pin key (1) which has a set of pins on it. Once inserted into the hand knob (14), the pins on the key frees a rotatable plug (2) from spring biassed tumblers (3). When the plug is turned via the key, the cam pin (7) at its end slides home a latch bolt (8) into a slot in the fixed head (g). This jams the rotation of spindle (11) thus locking the valve (12). To unlock, turn the indexing pin key (1) anti-clockwise so that the latch bolt (8) fully retracts into the spindle (11) thus freeing it once more. This mechanism does not affect the normal operations of the ON/OFF regulation of the flow. <IMAGE>

Description

BUILT-IN VALVE-LOCKING MECHANISM This invention relates to a new lockinq mechanism meant to be built inside valves.
Different types of valves are available in the market. Basically they are used either to ON/OFF or requlate the flow of a liquid which can be water, oil etc.. These valves do not have a Buiit-In Lockinq Mechanism. At most they are built with a provision for padlocking externally.
Accordinq to this present invention a set of lockinq mechanism is built inside the hand knob and spindle of a valve. This mechanism does not affect the normal operations of the valve.
A specific embodiment of the invention will now be described by way of example w3th reference to th accompany- ing drawings in which: Drawinq A - Shows the valve is close and the key is at the lockinq position, the latch bolt(8) is engaged into the fixed head(9).
Dravinq B - Shows a schematic drawing of the locking mechanism inside the hand knob(l4) and spindle(11) of a valve(l2) at the open and unlock position. At this position it is operated like any other ordinary valve. The hand knob is turned to open, shut or requlate the flow. As usual the hand knob rotation comes to a stop when the maximum valve openinq is reached. In the closinq process, as usual the hand knob is turned clockwise till the resistinq pressure is felt and further movement of the hand knob is difficult.
Drawing C - Shows the valve-close assembly drawing.
Drawing D - Shows the valve-open assembly drawing.
Drawing E - Shows the parts of the design.
drawing F - Shows the parts of the desiqn.
TKE WORKING PRINCIPLES OF THE BUILT-IN VALVE-LOCKING MECHANISM If the valve is going to be locked, it is first closed fully and the indexing pin key(l) is inserted and pushed down into the keyholes as shown in drawing A. With this action, the springs push the pin tumblers(3) down and levelled them thus allowing the rotatable plug to rotate via the key. The cam pin(7) at the end of the plug, by its rotation, transfers a sliding motion te the latch bolt(8). Half a turn of the key from its insertion position will fully home the latch bolt into the slot iii the fixed head as shown in drawing A. This jams the spindle(11) and thus locks the valve(12). Once locked the key can then be pulled out.The alignment of latch bolt with the slot is essential for a proper operation. Therefore a stopper Z is included to ensur-- that alignment is achieved when the hanl knob is turned to its dead end.
One point to be mentioned here is that the plug end has a stopper X which is limiLeå to travel for only half a turn. Therefore, the key can only made half a turn only.
To unlock the valve, the key is inserted back into the keyholes and then turned 180 degrees. This will fully retract the latch bolt(8) back into the spindle again thus freeing the spindle once more BUILT-IN VALVE-LOCKING MECHANISM PARTS LIST PART NO. PARTS NAME 1 INDEXING PIN KEY 2 ROTATING PLUG 3 TOP/BOTTOM PIN TUMBLER 4 PIN TUMBLER SPRING 5 CYLINDER HOUSING 6 COLLAR 7 CAM PIN 8 LATCH BOLT 9 FIXED HEAD 10 0' RING 11 SPINDLE 12 VALVE 13 BODY 14 HAND KNOB 15 SPRING CIRCULAR CLIP 16 PIN 17 RETAINER PIN

Claims (4)

1. A new Built-In Valve-Locking mechanism used with a key which is inserted into a rotatable plug(2) with a cam pin(7) which engages and slides latch bolt(8) into a slot to achieve a locking.
2. A new Built-In Valve-Locking Mechanism as claimed in claim 1 wherein a new key(1) provided with a set of indexing round pins and jig pin are used.
3. A new Euilt-In Valve-Locking Mechanism as claimed .n ifl wherein a stopper Z is provided for the purpose of always aligning the spindle(11) at the closed position.
4. A new Built-In Valve-Locking Mechanism as claimed in claim 1 herein it is provided to reside inside the hand knob(1) and spindle(11).
GB9012478A 1990-06-05 1990-06-05 Built-in valve-locking mechanism Expired - Fee Related GB2246417B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9012478A GB2246417B (en) 1990-06-05 1990-06-05 Built-in valve-locking mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9012478A GB2246417B (en) 1990-06-05 1990-06-05 Built-in valve-locking mechanism

Publications (3)

Publication Number Publication Date
GB9012478D0 GB9012478D0 (en) 1990-07-25
GB2246417A true GB2246417A (en) 1992-01-29
GB2246417B GB2246417B (en) 1994-08-03

Family

ID=10677073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9012478A Expired - Fee Related GB2246417B (en) 1990-06-05 1990-06-05 Built-in valve-locking mechanism

Country Status (1)

Country Link
GB (1) GB2246417B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5607084A (en) * 1994-10-28 1997-03-04 George; David L. Locking system for beverage taps
DE19644533C1 (en) * 1996-10-26 1998-05-14 Schloesser Haustechnik Gmbh Closable rotary grip for upper part of valve
DE19650937C1 (en) * 1996-12-07 1998-05-20 Schloesser Haustechnik Gmbh Lockable rotary handle for valve tops or the like.
WO2006063316A2 (en) 2004-12-08 2006-06-15 Flow Security Systems, Inc. Security device for a threaded element
EP2137443A1 (en) * 2007-03-20 2009-12-30 BMT Co. Ltd. Valve operated by a master key

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB267237A (en) * 1925-12-14 1927-03-14 Frederick Cecil Gadsby Improvements in means for prevention of unauthorised use of internal combustion engines
GB878422A (en) * 1959-01-09 1961-09-27 George Henry Arthur Wood Means for immobilising a vehicle diesel or other internal combustion engine
GB1269534A (en) * 1968-08-02 1972-04-06 Bosch Gmbh Robert Improvements in or relating to fluid flow control valves
US3885586A (en) * 1973-08-23 1975-05-27 Rodney B Tibbetts Key actuated locking valve
GB2101718A (en) * 1981-06-27 1983-01-19 Sempell Rhein Armaturen Valve locking system
GB2121470A (en) * 1982-06-04 1983-12-21 Sempell Rhein Armaturen Adjustable lock for a rotary element such as a valve
GB2146744A (en) * 1983-09-14 1985-04-24 Haefele Carl Heinz Improvements relating to adjustable locking devices for rotating drive members.
EP0355457A2 (en) * 1988-08-08 1990-02-28 Greiner S.P.A. Valve structure with key-operated lock

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB267237A (en) * 1925-12-14 1927-03-14 Frederick Cecil Gadsby Improvements in means for prevention of unauthorised use of internal combustion engines
GB878422A (en) * 1959-01-09 1961-09-27 George Henry Arthur Wood Means for immobilising a vehicle diesel or other internal combustion engine
GB1269534A (en) * 1968-08-02 1972-04-06 Bosch Gmbh Robert Improvements in or relating to fluid flow control valves
US3885586A (en) * 1973-08-23 1975-05-27 Rodney B Tibbetts Key actuated locking valve
GB2101718A (en) * 1981-06-27 1983-01-19 Sempell Rhein Armaturen Valve locking system
GB2121470A (en) * 1982-06-04 1983-12-21 Sempell Rhein Armaturen Adjustable lock for a rotary element such as a valve
GB2146744A (en) * 1983-09-14 1985-04-24 Haefele Carl Heinz Improvements relating to adjustable locking devices for rotating drive members.
EP0355457A2 (en) * 1988-08-08 1990-02-28 Greiner S.P.A. Valve structure with key-operated lock

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5607084A (en) * 1994-10-28 1997-03-04 George; David L. Locking system for beverage taps
DE19644533C1 (en) * 1996-10-26 1998-05-14 Schloesser Haustechnik Gmbh Closable rotary grip for upper part of valve
DE19650937C1 (en) * 1996-12-07 1998-05-20 Schloesser Haustechnik Gmbh Lockable rotary handle for valve tops or the like.
EP0846903A3 (en) * 1996-12-07 1998-10-21 Schlösser Haustechnik GmbH Lockable handle for valve heads
WO2006063316A2 (en) 2004-12-08 2006-06-15 Flow Security Systems, Inc. Security device for a threaded element
EP1828003A2 (en) * 2004-12-08 2007-09-05 Flow Security Systems, Inc. Security device for a threaded element
EP1828003A4 (en) * 2004-12-08 2010-03-10 Flow Security Systems Inc Security device for a threaded element
EP2137443A1 (en) * 2007-03-20 2009-12-30 BMT Co. Ltd. Valve operated by a master key
EP2137443A4 (en) * 2007-03-20 2011-06-08 Bmt Co Ltd Valve operated by a master key

Also Published As

Publication number Publication date
GB2246417B (en) 1994-08-03
GB9012478D0 (en) 1990-07-25

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19950426

PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960605