US20010000850A1 - Device for locking channel opening-closing handle of fluid controller - Google Patents
Device for locking channel opening-closing handle of fluid controller Download PDFInfo
- Publication number
- US20010000850A1 US20010000850A1 US09/750,690 US75069001A US2001000850A1 US 20010000850 A1 US20010000850 A1 US 20010000850A1 US 75069001 A US75069001 A US 75069001A US 2001000850 A1 US2001000850 A1 US 2001000850A1
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- US
- United States
- Prior art keywords
- stopper
- handle
- controller
- support
- locking device
- 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
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Classifications
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- 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
- F16K35/10—Means to prevent accidental or unauthorised actuation with locking caps or locking bars
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7069—With lock or seal
- Y10T137/7256—Locks against rotary motion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5611—For control and machine elements
- Y10T70/5615—Valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5611—For control and machine elements
- Y10T70/5615—Valve
- Y10T70/5619—Locked stationary
- Y10T70/5637—With padlock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5611—For control and machine elements
- Y10T70/569—Lever
- Y10T70/573—Single
- Y10T70/5735—Externally mounted locking device
- Y10T70/5739—With padlock
Definitions
- the present invention relates to a device for use in fluid controllers, such as on-off valves, which are included, for example, in semiconductor manufacturing apparatus, the device being adapted to lock a channel opening-closing handle of the controller in a full opening or full closing position.
- Fluid controllers are fully opened or fully closed as required by manipulating a channel opening-closing handle, whereas no device has been known for locking the handle in the full opening or closing position.
- the conventional fluid controller therefore has the problem that the handle becomes shifted during the operation of the semiconductor manufacturing apparatus, failing to permit a proper flow of fluid to adversely affect the product.
- An object of the present invention is to provide a device for locking the channel opening-closing handle of a fluid controller to eliminate errors involved in opening or closing the channel of the controller.
- the present invention provides a device for locking a channel opening-closing handle of a fluid controller in a full opening or full closing position, the handle being rotatable relative to a body of the fluid controller, the locking device comprising a stopper support having a body fitting opening and fixed to the controller body, and a stopper nonrotatably provided on the stopper support and engageable with the handle for preventing the rotation of the handle.
- the “body of a fluid controller” means the portion of the fluid controller which is fixed relative to the channel opening-closing handle which is rotatable.
- the controller body when the controller has a valve case (body) having a channel and a valve closure (bonnet) covering and fixed to the valve case, the combination of these two components will be referred to as the controller body.
- the stopper engageable with the handle to prevent the rotation thereof is not rotatable relative to the stopper support which is fixed to the controller body. This eliminates the likelihood that the handle will shift inadvertently, consequently obviating the trouble that an improper flow of fluid will adversely affect the product.
- the stopper support comprises a first member generally U-shaped and having a pair of side walls for holding therebetween two opposite flat faces of the controller body from opposite sides thereof, and a straight second member extending between and attached to free ends of the side walls for preventing the first member from slipping off the controller body, the stopper being integral with the first member.
- the first member is mounted on the controller body, with the two side walls of the first member fitted to the respective flat faces of the body, whereby the first member is prevented from rotating relative to the controller body.
- the second member is then made to extend between and attached to the free ends of the side walls, whereby the first member is prevented from slipping off the controller body.
- the second member is, for example, a pin having a head and insertable through an insertion bore formed in each of the two side walls of the U-shaped first member.
- a through bore is formed in the shank of the second member, such that one of the side walls is positionable between the head of the second member and the through bore thereof.
- the second member is passed through the insertion bore of one of the side walls and inserted through the insertion bore of the other side wall, and a lock is attached to the second member using the through bore.
- the second member is then prevented from slipping off by the lock-and the head of the second member, consequently making it impossible to turn the handle unless the lock is undone. This eliminates any of the errors to be involved in opening or closing the channel of the fluid controller.
- the insertion bore of one of the side walls may be in the form of a threaded bore, with an externally threaded portion formed at the forward end of the second member.
- the second member can then be prevented from slipping off when inserted through the insertion hole of the other side wall and screwed into the threaded bore of the above-mentioned side wall.
- the stopper is mounted on the stopper support so as to be movable upward and downward between a locking position in which the stopper engages with the handle and an unlocking position in which the stopper is out of engagement with the handle.
- the locking position or the unlocking position is then alternatively selectable merely by moving the stopper upward or downward, hence a facilitated change-over.
- the stopper support is formed by a first member and a second member joined to each other, and each of the first and second members is formed with a recess and another recess for forming the body fitting opening and a stopper fitting aperture, respectively, when the two members are joined, the stopper having a vertical portion slidably fitted in the aperture and formed with a lock attaching bore.
- FIG. 1 is a front view showing the appearance of a fluid controller and a first embodiment of channel opening-closing handle locking device according to the invention
- FIG. 2 is an enlarged fragmentary view in vertical section of the controller and the device
- FIG. 3 is a fragmentary plan view partly broken away
- FIG. 4 is a front view partly broken away and showing a second embodiment of channel opening-closing handle locking device according to the invention.
- FIG. 5 is a plan view of the same
- FIG. 6 is a front view of the second embodiment as released from a lock
- FIG. 7 is an exploded fragmentary perspective view of the second embodiment
- FIG. 8 is a perspective view of the same as assembled
- FIG. 9 is a front view showing a modification of the second embodiment.
- FIG. 10 is a view in section taken along the line 10 - 10 in FIG. 9.
- FIGS. 1 and 4 will be referred to as “left” and “right,” respectively, the lower side of FIGS. 3 and 5 as “front,” and the upper side thereof as “rear.”
- FIGS. 1 to 3 show a fluid controller 1 , and a channel opening-closing handle locking device 11 of the invention.
- the fluid controller 1 shown is a known diaphragm valve and comprises a body 2 having an inlet pipe joint portion 3 and an outlet pipe joint portion 4 , a bonnet 5 generally in the form of a hollow cylinder and fitted around an upper portion of the body 2 , a bonnet nut 6 for fixing the bonnet 5 to the body 2 , a panel nut 7 fitted around the bonnet 5 , a channel opening-closing handle 8 rotatable clockwise or counterclockwise, a valve stem 9 movable upward or downward with the rotation of the handle 8 , and a diaphragm (not shown) for effecting or blocking communication between an inlet passageway and an outlet passageway within the body 2 with the upward or downward movement of the valve stem 9 .
- the inlet pipe joint portion 3 projects from the body 2 leftward, while the outlet pipe joint portion 4 projects therefrom rightward.
- the handle 8 which is generally elliptical when seen from above, has its length oriented in the left-to-right direction and is aligned with the inlet and outlet pipe joint portions 3 , 4 (the position indicated in a chain line in FIG. 2) when fully opening the channel of the controller. When turned counterclockwise through 90 deg from this position, the handle 8 is in a full closing position (indicated in solid lines in FIGS. 1 and 2, and in a chain line in FIG. 3).
- the locking device 11 which is adapted to lock the handle 8 in its full closing position, comprises a support 12 having a body fitting opening 19 and fixed to the controller body 5 , a stopper 16 integral with the support 12 and engageable with the handle 8 for preventing the rotation of the handle, and a lock 14 in combination with a key to be possessed by a person capable of disengaging the stopper 16 .
- the support 12 comprises a first member 15 generally U-shaped and comprising a right wall (bottom wall) 15 c , and front and rear side walls 15 a , 15 b for holding the controller bonnet 5 therebetween from the front and rear sides, and a second member 13 in the form of a rod and extending between and attached to the free ends of the front and rear side walls 15 a , 15 b for preventing the first member 15 from slipping off the bonnet 5 .
- the bonnet 5 which is generally cylindrical, is locally cut to remove outer peripheral front and rear exposed portions immediately below the handle 8 , and is thereby formed with front and rear flat faces 5 a , 5 b parallel to each other and opposed respectively to the front and rear side walls 15 a , 15 b of the first member 15 as shown in FIG. 3.
- the spacing between the front and rear side walls 15 a , 15 b is approximately equal to the distance between the parallel front and rear flat faces 5 a , 5 b of the bonnet 5 .
- the first member 15 is fitted from the right side around the exposed portion of the bonnet 5 having the front and rear flat faces 5 a , 5 b parallel to each other.
- the surface of the right wall 15 c of the first member 15 in contact with the bonnet 5 is in the form of a circular arc in horizontal section to extend along the bonnet 5 .
- the first member 15 and the second member 13 define the body fitting opening 19 having an approximately rectangular horizontal section which is arched only at the right side as seen in FIG. 3.
- the stopper 16 is formed on the upper side of the right wall 15 c of the first member 15 so as to project upward beyond the front and rear side walls 15 a , 15 b .
- the stopper 16 has a face 16 a for contact with the handle 8 .
- the contact face 16 a is shaped in conformity with the shape of the right side face of the handle 8 in the chain-line position shown in FIG. 3 to prevent the rotation of the handle 8 .
- the lower-end portion of the first member 15 is so shaped as not to interfere with the exposed bonnet portion which is not formed with the front and rear flat faces.
- the front and rear side walls 15 a , 15 b of the first member 15 are formed with respective insertion bores 17 extending therethrough in the front-to-rear direction and aligned with each other.
- the second member 13 which is a pin having a head 13 a , is inserted through the bore 17 of the front side wall 15 a from the front thereof and through the bore 17 in the rear side wall 15 b .
- the second member 13 has a portion of reduced diameter positioned a small distance to the rear of the front side wall 15 a and formed with a through bore 18 vertically extending therethrough.
- the lock 14 is attached to the second member 13 using this bore 18 for preventing the second member 13 from slipping off.
- the lock 14 may be, for example, a commercial padlock.
- the controller 1 is assembled by fitting the bonnet 5 to the body 2 with the flat faces 5 a , 5 b facing toward the front and rear respectively, fastening the bonnet 5 to the body 2 with the bonnet nut 6 , determining the full-closed position of the valve stem 9 by moving the valve stem 9 upward or downward, and fixing the handle 8 to the valve stem 9 so that when the valve stem 9 is in its full-closed position, the handle 8 is in the full closing position.
- the handle 8 can then be locked in the full closing position as previously mentioned.
- the handle 8 is made lockable in the full opening position by fitting the bonnet 5 to the body 2 with the flat faces 5 a , 5 b facing toward the left and right respectively in assembling the controller 1 and thereafter following the same procedure as above.
- the contact face 16 a of the stopper 16 for the handle 8 is shaped in conformity with the shape of the right side face of the handle 8 in its full closing position according to the embodiment described, whereas the shape of the stopper 16 is not limited to this but can be modified variously insofar as the stopper is engageable with the handle 8 to prevent the rotation thereof.
- the handle 8 can be shaped otherwise to obtain a handle locking device similarly insofar as it is not perfectly cylindrical.
- the channel opening-closing handle if perfectly cylindrical, may be provided with a portion engageable with the first member, whereby a handle locking device can be obtained with the same function as described above.
- FIGS. 4 to 8 show another handle locking device 21 as a second embodiment for use with a fluid controller which is the same as in the case of the first embodiment. Like parts are therefore designated by like reference numerals and will not be described repeatedly.
- the locking device 21 is adapted to lock a channel opening-closing handle 8 in its full closing position, and comprises a support 22 having a rectangular body fitting opening 23 and fixed to a controller bonnet 5 , a stopper 26 nonrotatably mounted on the support 22 , movable upward and downward relative thereto and engageable with the handle 8 for preventing the rotation of the handle, and a lock 27 in combination with a key to be possessed by a person capable of disengaging the stopper 26 .
- the stopper support 22 is formed by a front segment (first member) 24 and a rear segment (second member) 25 butting against and joined to the front segment 24 , the two segments having the same shape.
- the stopper support 22 is in the form of a rectangular plate in its entirety and comprises a right segment 22 a having the same height as parallel front and rear flat faces 5 a , 5 b of the bonnet 5 , and a left segment 22 b having a smaller height than the right segment 22 a and supporting the stopper 26 thereon.
- the body fitting opening 23 is formed in the right segment 22 a of the support 22 , with part of the opening 23 formed also in the left segment 22 b .
- the left segment 22 b of the stopper support 22 is formed with a stopper fitting rectangular aperture 28 smaller than the opening 23 in front-to-rear width and elongated in the left-to-right direction.
- the stopper 26 comprises a contact portion 29 extending in the front-to-rear direction and having a right side providing a contact face 29 a for the handle 8 , a horizontal base portion 30 extending leftward from the midportion, with respect to the front-to-rear direction, of the contact portion 29 , and a vertical portion 31 extending downward from the base portion 30 and slidably fitted in the aperture 28 .
- the contact portion 29 has a front-to-rear length equal to the front-to-rear width of the stopper support 22 .
- the contact face 29 a is shaped in conformity with the shape of the left side face of the handle.
- the horizontal base portion 30 is greater than the stopper fitting aperture 28 in horizontal cross sectional area, and is supported by the inner peripheral portion of the left segment 22 b defining the aperture 28 .
- the vertical portion 31 has a lock bore 32 extending therethrough in the front-to-rear direction.
- the lock 27 is the same as the one used in the first embodiment.
- the stopper 26 is mounted on the support 22 so as to be movable upward or downward between an upper position (locking position) where it is engaged with the handle 8 and a lower position (unlocking position) where it is out of engagement with the handle, and the locking position or the unlocking position is alternatively selectable merely by moving the stopper 26 upward or downward.
- the handle 8 can not be unlocked unless the second member 13 is removed from the first member 15 , whereas according to the second embodiment, the handle 8 can be unlocked merely by undoing the lock 27 , hence a facilitated change-over between locking and unlocking.
- the vertical portion 31 of the stopper 26 is formed at its lower end with a forwardly projecting edge 31 a which engages with an edge of the apertured portion 28 when the stopper 26 is lifted to the chain-line position shown in FIG. 6 to prevent the stopper 26 from slipping out upward.
- the butting portions of the first and second members 24 , 25 are formed with recesses 33 , 34 rectangular in horizontal section for forming the body fitting opening 23 when the two members 24 , 25 are joined, and with recesses 35 , 36 rectangular in horizontal section for similarly forming the stopper fitting aperture 28 .
- Pin bores 37 , 38 extending in the front-to-rear direction are formed in respective butting faces between the recesses 33 , 34 and the recesses 35 , 36 .
- a bolt hole 39 is formed in the right end of the first member 24 , and a threaded bore 40 in the right end of the second member 25 .
- a connecting pin 41 is tightly fitted into the bores 37 , 38 of the members 24 , 25 , while a flat fillister head screw 42 is inserted through the bolt hole 39 of the first member 24 and driven into the threaded bore 40 of the second member 25 , whereby the two members 24 , 25 are fastened together.
- the lower ends of the recesses 33 , 34 of the members 24 , 25 forming the opening 23 are made larger than the remaining upper portions of the recesses 33 , 34 so as not to interfere with the exposed portion of the bonnet 5 where the parallel front and rear flat faces are not formed.
- a pin is press-fitted in the bolt hole 39 for concealing the head of the screw 42 for fastening the two members 24 , 25 together.
- the first member 24 is integrally provided with a vertical cover plate 43 extending from its underside as indicated in chain lines in FIG. 7.
- the cover plate 43 is positioned in parallel to the stopper vertical portion 31 as shown in FIGS. 9 and 10 to conceal the lock bore 32 .
- the handle 8 then can not be fastened with the lock 27 unless the stopper 26 is lifted to its upper position. This serves to obviate the error of fastening the stopper 26 in its lower position with the lock 27 .
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
A locking device comprises a stopper support fixed to the body of a fluid controller, and a stopper nonrotatably mounted on the stopper support and engageable with a channel opening-closing handle for preventing the rotation of the handle. The stopper mounted on the support is movable upward and downward between a locking position wherein the stopper engages with the handle and an unlocking position wherein the stopper is out of engagement with the handle. The stopper support is formed with an opening for fitting the controller body therein and an aperture for fitting the stopper therein. The stopper has a vertical portion slidably fitted in the aperture and formed with a lock attaching bore.
Description
- 1. The present invention relates to a device for use in fluid controllers, such as on-off valves, which are included, for example, in semiconductor manufacturing apparatus, the device being adapted to lock a channel opening-closing handle of the controller in a full opening or full closing position.
- 2. Fluid controllers are fully opened or fully closed as required by manipulating a channel opening-closing handle, whereas no device has been known for locking the handle in the full opening or closing position.
- 3. The conventional fluid controller therefore has the problem that the handle becomes shifted during the operation of the semiconductor manufacturing apparatus, failing to permit a proper flow of fluid to adversely affect the product.
- 4. An object of the present invention is to provide a device for locking the channel opening-closing handle of a fluid controller to eliminate errors involved in opening or closing the channel of the controller.
- 5. The present invention provides a device for locking a channel opening-closing handle of a fluid controller in a full opening or full closing position, the handle being rotatable relative to a body of the fluid controller, the locking device comprising a stopper support having a body fitting opening and fixed to the controller body, and a stopper nonrotatably provided on the stopper support and engageable with the handle for preventing the rotation of the handle.
- 6. The term the “body of a fluid controller” means the portion of the fluid controller which is fixed relative to the channel opening-closing handle which is rotatable. For example, when the controller has a valve case (body) having a channel and a valve closure (bonnet) covering and fixed to the valve case, the combination of these two components will be referred to as the controller body.
- 7. With the locking device of the present invention, the stopper engageable with the handle to prevent the rotation thereof is not rotatable relative to the stopper support which is fixed to the controller body. This eliminates the likelihood that the handle will shift inadvertently, consequently obviating the trouble that an improper flow of fluid will adversely affect the product.
- 8. According to an embodiment of the invention, the stopper support comprises a first member generally U-shaped and having a pair of side walls for holding therebetween two opposite flat faces of the controller body from opposite sides thereof, and a straight second member extending between and attached to free ends of the side walls for preventing the first member from slipping off the controller body, the stopper being integral with the first member. To provide this arrangement, the first member is mounted on the controller body, with the two side walls of the first member fitted to the respective flat faces of the body, whereby the first member is prevented from rotating relative to the controller body. The second member is then made to extend between and attached to the free ends of the side walls, whereby the first member is prevented from slipping off the controller body.
- 9. The second member is, for example, a pin having a head and insertable through an insertion bore formed in each of the two side walls of the U-shaped first member. A through bore is formed in the shank of the second member, such that one of the side walls is positionable between the head of the second member and the through bore thereof. The second member is passed through the insertion bore of one of the side walls and inserted through the insertion bore of the other side wall, and a lock is attached to the second member using the through bore. The second member is then prevented from slipping off by the lock-and the head of the second member, consequently making it impossible to turn the handle unless the lock is undone. This eliminates any of the errors to be involved in opening or closing the channel of the fluid controller. Instead of using the lock, the insertion bore of one of the side walls may be in the form of a threaded bore, with an externally threaded portion formed at the forward end of the second member. The second member can then be prevented from slipping off when inserted through the insertion hole of the other side wall and screwed into the threaded bore of the above-mentioned side wall.
- 10. Preferably, the stopper is mounted on the stopper support so as to be movable upward and downward between a locking position in which the stopper engages with the handle and an unlocking position in which the stopper is out of engagement with the handle. The locking position or the unlocking position is then alternatively selectable merely by moving the stopper upward or downward, hence a facilitated change-over.
- 11. This can be realized by an arrangement wherein the stopper support is formed by a first member and a second member joined to each other, and each of the first and second members is formed with a recess and another recess for forming the body fitting opening and a stopper fitting aperture, respectively, when the two members are joined, the stopper having a vertical portion slidably fitted in the aperture and formed with a lock attaching bore.
- 12.FIG. 1 is a front view showing the appearance of a fluid controller and a first embodiment of channel opening-closing handle locking device according to the invention;
- 13.FIG. 2 is an enlarged fragmentary view in vertical section of the controller and the device;
- 14.FIG. 3 is a fragmentary plan view partly broken away;
- 15.FIG. 4 is a front view partly broken away and showing a second embodiment of channel opening-closing handle locking device according to the invention;
- 16.FIG. 5 is a plan view of the same;
- 17.FIG. 6 is a front view of the second embodiment as released from a lock;
- 18.FIG. 7 is an exploded fragmentary perspective view of the second embodiment;
- 19.FIG. 8 is a perspective view of the same as assembled;
- 20.FIG. 9 is a front view showing a modification of the second embodiment; and
- 21.FIG. 10 is a view in section taken along the line 10-10 in FIG. 9.
- 22. Embodiments of the present invention will be described below with reference to the drawings. In the following description, the left- and right-hand sides of FIGS. 1 and 4 will be referred to as “left” and “right,” respectively, the lower side of FIGS. 3 and 5 as “front,” and the upper side thereof as “rear.”
- 23. FIGS. 1 to 3 show a
fluid controller 1, and a channel opening-closinghandle locking device 11 of the invention. - 24. The
fluid controller 1 shown is a known diaphragm valve and comprises abody 2 having an inletpipe joint portion 3 and an outletpipe joint portion 4, abonnet 5 generally in the form of a hollow cylinder and fitted around an upper portion of thebody 2, abonnet nut 6 for fixing thebonnet 5 to thebody 2, apanel nut 7 fitted around thebonnet 5, a channel opening-closing handle 8 rotatable clockwise or counterclockwise, avalve stem 9 movable upward or downward with the rotation of thehandle 8, and a diaphragm (not shown) for effecting or blocking communication between an inlet passageway and an outlet passageway within thebody 2 with the upward or downward movement of thevalve stem 9. - 25. The inlet
pipe joint portion 3 projects from thebody 2 leftward, while the outletpipe joint portion 4 projects therefrom rightward. Thehandle 8, which is generally elliptical when seen from above, has its length oriented in the left-to-right direction and is aligned with the inlet and outlet pipejoint portions 3, 4 (the position indicated in a chain line in FIG. 2) when fully opening the channel of the controller. When turned counterclockwise through 90 deg from this position, thehandle 8 is in a full closing position (indicated in solid lines in FIGS. 1 and 2, and in a chain line in FIG. 3). - 26. The
locking device 11, which is adapted to lock thehandle 8 in its full closing position, comprises asupport 12 having a body fitting opening 19 and fixed to thecontroller body 5, astopper 16 integral with thesupport 12 and engageable with thehandle 8 for preventing the rotation of the handle, and alock 14 in combination with a key to be possessed by a person capable of disengaging thestopper 16. - 27. The
support 12 comprises afirst member 15 generally U-shaped and comprising a right wall (bottom wall) 15 c, and front andrear side walls controller bonnet 5 therebetween from the front and rear sides, and asecond member 13 in the form of a rod and extending between and attached to the free ends of the front andrear side walls first member 15 from slipping off thebonnet 5. - 28. The
bonnet 5, which is generally cylindrical, is locally cut to remove outer peripheral front and rear exposed portions immediately below thehandle 8, and is thereby formed with front andrear flat faces rear side walls first member 15 as shown in FIG. 3. The spacing between the front andrear side walls flat faces bonnet 5. - 29. The
first member 15 is fitted from the right side around the exposed portion of thebonnet 5 having the front and rear flat faces 5 a, 5 b parallel to each other. The surface of theright wall 15 c of thefirst member 15 in contact with thebonnet 5 is in the form of a circular arc in horizontal section to extend along thebonnet 5. Thus, thefirst member 15 and thesecond member 13 define thebody fitting opening 19 having an approximately rectangular horizontal section which is arched only at the right side as seen in FIG. 3. - 30. The
stopper 16 is formed on the upper side of theright wall 15 c of thefirst member 15 so as to project upward beyond the front andrear side walls stopper 16 has aface 16 a for contact with thehandle 8. The contact face 16 a is shaped in conformity with the shape of the right side face of thehandle 8 in the chain-line position shown in FIG. 3 to prevent the rotation of thehandle 8. The lower-end portion of thefirst member 15 is so shaped as not to interfere with the exposed bonnet portion which is not formed with the front and rear flat faces. - 31. The front and
rear side walls first member 15 are formed with respective insertion bores 17 extending therethrough in the front-to-rear direction and aligned with each other. Thesecond member 13, which is a pin having ahead 13 a, is inserted through thebore 17 of thefront side wall 15 a from the front thereof and through thebore 17 in therear side wall 15 b. Thesecond member 13 has a portion of reduced diameter positioned a small distance to the rear of thefront side wall 15 a and formed with a throughbore 18 vertically extending therethrough. Thelock 14 is attached to thesecond member 13 using this bore 18 for preventing thesecond member 13 from slipping off. Thelock 14 may be, for example, a commercial padlock. Theshackle 14 a of the lock is passed through thebore 18 and then fitted into the body of thelock 14, whereby thefront side wall 15 a is held between theshackle 14 a of thelock 14 and thehead 13 a of thesecond member 13, which in turn is prevented from slipping off. Consequently, it becomes impossible to turn thehandle 8 unless thelock 14 is released with the key. - 32. The
controller 1 is assembled by fitting thebonnet 5 to thebody 2 with theflat faces bonnet 5 to thebody 2 with thebonnet nut 6, determining the full-closed position of thevalve stem 9 by moving thevalve stem 9 upward or downward, and fixing thehandle 8 to thevalve stem 9 so that when thevalve stem 9 is in its full-closed position, thehandle 8 is in the full closing position. Thehandle 8 can then be locked in the full closing position as previously mentioned. Thehandle 8 is made lockable in the full opening position by fitting thebonnet 5 to thebody 2 with theflat faces controller 1 and thereafter following the same procedure as above. - 33. The contact face 16 a of the
stopper 16 for thehandle 8 is shaped in conformity with the shape of the right side face of thehandle 8 in its full closing position according to the embodiment described, whereas the shape of thestopper 16 is not limited to this but can be modified variously insofar as the stopper is engageable with thehandle 8 to prevent the rotation thereof. Although having a generally elliptical shape when seen from above, thehandle 8 can be shaped otherwise to obtain a handle locking device similarly insofar as it is not perfectly cylindrical. The channel opening-closing handle, if perfectly cylindrical, may be provided with a portion engageable with the first member, whereby a handle locking device can be obtained with the same function as described above. - 34. FIGS. 4 to 8 show another
handle locking device 21 as a second embodiment for use with a fluid controller which is the same as in the case of the first embodiment. Like parts are therefore designated by like reference numerals and will not be described repeatedly. - 35. The locking
device 21 is adapted to lock a channel opening-closing handle 8 in its full closing position, and comprises asupport 22 having a rectangularbody fitting opening 23 and fixed to acontroller bonnet 5, astopper 26 nonrotatably mounted on thesupport 22, movable upward and downward relative thereto and engageable with thehandle 8 for preventing the rotation of the handle, and alock 27 in combination with a key to be possessed by a person capable of disengaging thestopper 26. - 36. The
stopper support 22 is formed by a front segment (first member) 24 and a rear segment (second member) 25 butting against and joined to thefront segment 24, the two segments having the same shape. Thestopper support 22 is in the form of a rectangular plate in its entirety and comprises aright segment 22 a having the same height as parallel front and rear flat faces 5 a, 5 b of thebonnet 5, and aleft segment 22 b having a smaller height than theright segment 22 a and supporting thestopper 26 thereon. Thebody fitting opening 23 is formed in theright segment 22 a of thesupport 22, with part of theopening 23 formed also in theleft segment 22 b. Theleft segment 22 b of thestopper support 22 is formed with a stopper fittingrectangular aperture 28 smaller than theopening 23 in front-to-rear width and elongated in the left-to-right direction. - 37. The
stopper 26 comprises acontact portion 29 extending in the front-to-rear direction and having a right side providing acontact face 29 a for thehandle 8, ahorizontal base portion 30 extending leftward from the midportion, with respect to the front-to-rear direction, of thecontact portion 29, and avertical portion 31 extending downward from thebase portion 30 and slidably fitted in theaperture 28. - 38. The
contact portion 29 has a front-to-rear length equal to the front-to-rear width of thestopper support 22. The contact face 29 a is shaped in conformity with the shape of the left side face of the handle. Thehorizontal base portion 30 is greater than thestopper fitting aperture 28 in horizontal cross sectional area, and is supported by the inner peripheral portion of theleft segment 22 b defining theaperture 28. Thevertical portion 31 has a lock bore 32 extending therethrough in the front-to-rear direction. - 39. The
lock 27 is the same as the one used in the first embodiment. - 40. When the
handle 8 is released from thelock 27, the upper surfaces of thecontact portion 29 and thebase portion 30 are flush with the upper surface of theright segment 22 a of thestopper support 22, and thestopper 26 is held out of engagement with thehandle 8 as shown in FIG. 6. Thestopper 26 thus positioned is then lifted, and theshackle 27 a of thelock 27 is passed through the lock bore 32 brought to an exposed position above theleft segment 22 b of thesupport 22, whereby thestopper 26 is projected upward beyond theright segment 22 a of thesupport 22 by an amount corresponding to the thickness of theshackle 27 a, into engagement with thehandle 8 as shown in FIG. 4. It is impossible to turn thehandle 8 in this state unless the handle is released from thelock 27 using the key. - 41. Thus, the
stopper 26 is mounted on thesupport 22 so as to be movable upward or downward between an upper position (locking position) where it is engaged with thehandle 8 and a lower position (unlocking position) where it is out of engagement with the handle, and the locking position or the unlocking position is alternatively selectable merely by moving thestopper 26 upward or downward. With the first embodiment, thehandle 8 can not be unlocked unless thesecond member 13 is removed from thefirst member 15, whereas according to the second embodiment, thehandle 8 can be unlocked merely by undoing thelock 27, hence a facilitated change-over between locking and unlocking. - 42. The
vertical portion 31 of thestopper 26 is formed at its lower end with a forwardly projectingedge 31 a which engages with an edge of theapertured portion 28 when thestopper 26 is lifted to the chain-line position shown in FIG. 6 to prevent thestopper 26 from slipping out upward. - 43. As shown in greater detail in FIGS. 7 and 8, the butting portions of the first and
second members recesses body fitting opening 23 when the twomembers recesses stopper fitting aperture 28. Pin bores 37, 38 extending in the front-to-rear direction are formed in respective butting faces between therecesses recesses bolt hole 39 is formed in the right end of thefirst member 24, and a threadedbore 40 in the right end of thesecond member 25. A connectingpin 41 is tightly fitted into thebores members fillister head screw 42 is inserted through thebolt hole 39 of thefirst member 24 and driven into the threaded bore 40 of thesecond member 25, whereby the twomembers - 44. The lower ends of the
recesses members opening 23 are made larger than the remaining upper portions of therecesses bonnet 5 where the parallel front and rear flat faces are not formed. Although not shown, a pin is press-fitted in thebolt hole 39 for concealing the head of thescrew 42 for fastening the twomembers - 45. Preferably, the
first member 24 is integrally provided with avertical cover plate 43 extending from its underside as indicated in chain lines in FIG. 7. When thestopper 26 is in its lower position, thecover plate 43 is positioned in parallel to the stoppervertical portion 31 as shown in FIGS. 9 and 10 to conceal the lock bore 32. Thehandle 8 then can not be fastened with thelock 27 unless thestopper 26 is lifted to its upper position. This serves to obviate the error of fastening thestopper 26 in its lower position with thelock 27.
Claims (5)
1. A device for locking a channel opening-closing handle of a fluid controller in a full opening or full closing position, the handle being rotatable relative to a body of the fluid controller, the locking device comprising a stopper support having a body fitting opening and fixed to the controller body, and a stopper nonrotatably provided on the stopper support and engageable with the handle for preventing the rotation of the handle.
2. A locking device according to wherein the stopper support comprises a first member generally U-shaped and having a pair of side walls for holding therebetween two opposite flat faces of the controller body from opposite sides thereof, and a straight second member extending between and attached to free ends of the side walls for preventing the first member from slipping off the controller body, the stopper being integral with the first member.
claim 1
3. A locking device according to wherein the second member has a through bore for attaching a lock for preventing the second member from slipping off.
claim 2
4. A locking device according to wherein the stopper is mounted on the stopper support so as to be movable upward and downward between a locking position in which the stopper engages with the handle and an unlocking position in which the stopper is out of engagement with the handle.
claim 1
5. A locking device according to wherein the stopper support is formed by a first member and a second member joined to each other, and each of the first and second members is formed with a recess and another recess for forming the body fitting opening and a stopper fitting aperture, respectively, when the two members are joined, the stopper having a vertical portion slidably fitted in the aperture and formed with a lock attaching bore.
claim 4
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/750,690 US6453707B2 (en) | 1997-04-22 | 2001-01-02 | Device for locking channel opening-closing handle of fluid controller |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10405597 | 1997-04-22 | ||
JPPAT.9-104055 | 1997-04-22 | ||
JP9-104055 | 1997-04-22 | ||
US09/062,750 US6189350B1 (en) | 1997-04-22 | 1998-04-20 | Device for locking channel opening-closing handle of fluid controller |
US09/750,690 US6453707B2 (en) | 1997-04-22 | 2001-01-02 | Device for locking channel opening-closing handle of fluid controller |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/062,750 Division US6189350B1 (en) | 1997-04-22 | 1998-04-20 | Device for locking channel opening-closing handle of fluid controller |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010000850A1 true US20010000850A1 (en) | 2001-05-10 |
US6453707B2 US6453707B2 (en) | 2002-09-24 |
Family
ID=14370520
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/062,750 Expired - Lifetime US6189350B1 (en) | 1997-04-22 | 1998-04-20 | Device for locking channel opening-closing handle of fluid controller |
US09/750,690 Expired - Lifetime US6453707B2 (en) | 1997-04-22 | 2001-01-02 | Device for locking channel opening-closing handle of fluid controller |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/062,750 Expired - Lifetime US6189350B1 (en) | 1997-04-22 | 1998-04-20 | Device for locking channel opening-closing handle of fluid controller |
Country Status (9)
Country | Link |
---|---|
US (2) | US6189350B1 (en) |
EP (1) | EP0874183B1 (en) |
JP (1) | JP4793404B2 (en) |
KR (1) | KR100482938B1 (en) |
CA (1) | CA2235273C (en) |
DE (1) | DE69816171T2 (en) |
IL (1) | IL124146A (en) |
SG (2) | SG83677A1 (en) |
TW (1) | TW355200B (en) |
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US8806906B1 (en) * | 2011-12-29 | 2014-08-19 | Bryce M. Bagby | Actuator lock-out bracket |
US9217514B1 (en) | 2011-12-29 | 2015-12-22 | Bryce M. Bagby | Actuator lock-out bracket |
US9951882B2 (en) | 2014-02-28 | 2018-04-24 | Fujikin Incorporated | Handwheel cap |
US11002379B2 (en) * | 2018-12-12 | 2021-05-11 | Ckd Corporation | Manual valve and pneumatic device |
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US6820782B1 (en) * | 2001-10-19 | 2004-11-23 | Brant Monson | Releasable saddlebag system for motorcycles |
JP4264626B2 (en) * | 2002-10-10 | 2009-05-20 | 株式会社フジキン | Locking device for flow path opening / closing handle of fluid controller |
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US7588050B1 (en) * | 2005-09-30 | 2009-09-15 | Russell Jim L | Security cap for gas service valve |
KR100828393B1 (en) * | 2007-05-25 | 2008-05-08 | 태산이엔씨주식회사 | A safety cap for valve-handle |
US8074960B2 (en) * | 2008-11-04 | 2011-12-13 | Brady Worldwide, Inc. | System and method for restricting access to a valve |
US8087268B1 (en) * | 2009-03-19 | 2012-01-03 | The Durham Company, PMD | Thread retained security bolt system |
US8561635B2 (en) | 2010-08-18 | 2013-10-22 | Wcm Industries, Inc. | Hydrant security system |
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US20190177955A1 (en) * | 2017-12-08 | 2019-06-13 | Prestigious Innovations, LLC | Hydrostatic pressure washer |
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- 1998-04-20 US US09/062,750 patent/US6189350B1/en not_active Expired - Lifetime
- 1998-04-20 IL IL12414698A patent/IL124146A/en not_active IP Right Cessation
- 1998-04-21 EP EP98107181A patent/EP0874183B1/en not_active Expired - Lifetime
- 1998-04-21 TW TW087106072A patent/TW355200B/en active
- 1998-04-21 DE DE69816171T patent/DE69816171T2/en not_active Expired - Fee Related
- 1998-04-21 CA CA002235273A patent/CA2235273C/en not_active Expired - Fee Related
- 1998-04-21 KR KR10-1998-0014138A patent/KR100482938B1/en active IP Right Grant
- 1998-04-22 SG SG9800786A patent/SG83677A1/en unknown
- 1998-04-22 SG SG200104428A patent/SG95667A1/en unknown
-
2001
- 2001-01-02 US US09/750,690 patent/US6453707B2/en not_active Expired - Lifetime
-
2008
- 2008-05-16 JP JP2008129003A patent/JP4793404B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8806906B1 (en) * | 2011-12-29 | 2014-08-19 | Bryce M. Bagby | Actuator lock-out bracket |
US9217514B1 (en) | 2011-12-29 | 2015-12-22 | Bryce M. Bagby | Actuator lock-out bracket |
US9951882B2 (en) | 2014-02-28 | 2018-04-24 | Fujikin Incorporated | Handwheel cap |
US11002379B2 (en) * | 2018-12-12 | 2021-05-11 | Ckd Corporation | Manual valve and pneumatic device |
Also Published As
Publication number | Publication date |
---|---|
SG95667A1 (en) | 2003-04-23 |
KR100482938B1 (en) | 2005-11-21 |
SG83677A1 (en) | 2001-10-16 |
CA2235273C (en) | 2007-08-14 |
TW355200B (en) | 1999-04-01 |
EP0874183A3 (en) | 1999-04-07 |
IL124146A (en) | 2001-08-08 |
US6453707B2 (en) | 2002-09-24 |
CA2235273A1 (en) | 1998-10-22 |
EP0874183A2 (en) | 1998-10-28 |
DE69816171T2 (en) | 2004-04-01 |
DE69816171D1 (en) | 2003-08-14 |
JP4793404B2 (en) | 2011-10-12 |
EP0874183B1 (en) | 2003-07-09 |
KR19980081573A (en) | 1998-11-25 |
JP2008190722A (en) | 2008-08-21 |
US6189350B1 (en) | 2001-02-20 |
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