CA1195587A - Two position control valve - Google Patents
Two position control valveInfo
- Publication number
- CA1195587A CA1195587A CA000430467A CA430467A CA1195587A CA 1195587 A CA1195587 A CA 1195587A CA 000430467 A CA000430467 A CA 000430467A CA 430467 A CA430467 A CA 430467A CA 1195587 A CA1195587 A CA 1195587A
- Authority
- CA
- Canada
- Prior art keywords
- slide member
- valve
- positions
- slide
- planar
- 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.)
- Expired
Links
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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A two position control valve having a body member with a control surface and a slide member incorporating a seal supported by the body member for sliding movement relative to the control surface and forming a control chamber placing selected ones of a plurality of control.
ports in communication with each other.
A two position control valve having a body member with a control surface and a slide member incorporating a seal supported by the body member for sliding movement relative to the control surface and forming a control chamber placing selected ones of a plurality of control.
ports in communication with each other.
Description
~ his invention relates to fluid control valves and in particular to a two pOSitiOII valve.
There is a need for slmple economical two position slide type valves. Present valves, even for low pressure operation, incorporate a multiplicity of parts ma~.ing them ~omplex, expensive to manufacture and maintain.
It is an object of the invention to provide a simple -two position valve incorporating a minimum number of parts.
Another object of the invention is to provide a two position valve in which the valve is maintained in selected one of its -two possible position.s.
Yet anothex object of -the invention is to provide a two position valve in which porting between selected ones of inlet and control ports is achieved by a simple, commonly available sealing elemen-tO
The objects of the invention are accomplished by the provision of a two position valve having a body with a ~ pl~a~
A ~ control surface to which a supply or inlet port as well as control ports communicate. A slide member is sup-- p /~n aY
ported by the body member for movement relative to the ~
surface between a selected one of two positions. The slide member incorpora-tes a seal element mounted on the slide member for movement therewith and slidingly engaging the control surface to form a control chamber whenever the valve is in one of its two selected posi-tions. The slide member is movable by a handle manually operated to position the slide member in one of its two selected positions. In one of the positions, the supply port is in communication with one control port and in a second position of the slide -the supply port: ls in communication with another control port.
~'~
~35~7 The handle and slide are so arranged that a spring continues to bias the slide member into sealing and sl.iding contact with the control surface when the slide mernber is in one of its two selected positions. The spring acts also to provide an over-center action which rnaintains the valve i.n one of its two selected positions. To insure that the valve can-not be accidentally moved from its selected position, the handle is provided with a detent arrangement releasably holding the handle in one of its two control positions.
The preferred embodiment of the invention is illustrated in the drawings in which:
Figure 1 is a cross-sectional view of the two position valve embodying the invention;
~; Figure 2 is a perspective view of the valve seen in Figure l;
Figure 3 is a cross-sectional view taken on line 3-3 in Figure l;
Figure 4 is a cross-sectional view similar to Figure 3 showing another condition of operations; and Fiyure 5 is a cross-sectional view taken on line 5-5 in Figure 3.
The two position valve embodyiny the invention is designa-ted at 10 and is particularly adapted for con-trolling fluid flow from a source 12 through an inlet port 13 to a se:Lected one of control ports 14 and 16 which in the present: instance are illustrated as connected by fluid lines to opposi-te ends of the two way linear actuator 18.
The valve 10 includes a body member 20 supporting a slide member 22 movable from one positi.on to another through means o:E a manually operated handle 24. The body
There is a need for slmple economical two position slide type valves. Present valves, even for low pressure operation, incorporate a multiplicity of parts ma~.ing them ~omplex, expensive to manufacture and maintain.
It is an object of the invention to provide a simple -two position valve incorporating a minimum number of parts.
Another object of the invention is to provide a two position valve in which the valve is maintained in selected one of its -two possible position.s.
Yet anothex object of -the invention is to provide a two position valve in which porting between selected ones of inlet and control ports is achieved by a simple, commonly available sealing elemen-tO
The objects of the invention are accomplished by the provision of a two position valve having a body with a ~ pl~a~
A ~ control surface to which a supply or inlet port as well as control ports communicate. A slide member is sup-- p /~n aY
ported by the body member for movement relative to the ~
surface between a selected one of two positions. The slide member incorpora-tes a seal element mounted on the slide member for movement therewith and slidingly engaging the control surface to form a control chamber whenever the valve is in one of its two selected posi-tions. The slide member is movable by a handle manually operated to position the slide member in one of its two selected positions. In one of the positions, the supply port is in communication with one control port and in a second position of the slide -the supply port: ls in communication with another control port.
~'~
~35~7 The handle and slide are so arranged that a spring continues to bias the slide member into sealing and sl.iding contact with the control surface when the slide mernber is in one of its two selected positions. The spring acts also to provide an over-center action which rnaintains the valve i.n one of its two selected positions. To insure that the valve can-not be accidentally moved from its selected position, the handle is provided with a detent arrangement releasably holding the handle in one of its two control positions.
The preferred embodiment of the invention is illustrated in the drawings in which:
Figure 1 is a cross-sectional view of the two position valve embodying the invention;
~; Figure 2 is a perspective view of the valve seen in Figure l;
Figure 3 is a cross-sectional view taken on line 3-3 in Figure l;
Figure 4 is a cross-sectional view similar to Figure 3 showing another condition of operations; and Fiyure 5 is a cross-sectional view taken on line 5-5 in Figure 3.
The two position valve embodyiny the invention is designa-ted at 10 and is particularly adapted for con-trolling fluid flow from a source 12 through an inlet port 13 to a se:Lected one of control ports 14 and 16 which in the present: instance are illustrated as connected by fluid lines to opposi-te ends of the two way linear actuator 18.
The valve 10 includes a body member 20 supporting a slide member 22 movable from one positi.on to another through means o:E a manually operated handle 24. The body
2--~95~'7 member 20 incorporates an open recess 26 which recelves and guides the slide member 22 during its rnovement. The recess 26 has a generally rectangular bo-ttom wall w~ich forms p/~n a r ~ a ~ con-trol surface 28. The delivery port 13 and the control ports 14 and 16 open to the planer control surEace 28.
Referring to Figure 1, the slide member 22 is generally cup-shaped and has a bottom surface 30 which is provided with a rectangular shaped porting ring 32 fcrmed integrally at the underside of the slide member 22.
The porting ring 32 acts as a support for the inner perimeter of a seal 34. The seal 34 is in the form of a circular O-ring and is stretched over the outside perimeter of the rec-tangular porting ring 32. In the position shown in Figure 1, the seal 34 is in engagement with the control surface 28 and defines a movable control chamber 36 which is formed between the bottom of the slide member ~2 and the P/~n~
p~a~ control surface 28. In the position illustrated in Figure 3, the control charnber 36 is located so that the delivery port 13 and control por-t 14 communicate with each other through the control chamber 36~ In Figure 4, the control chamber 36 cornmunicates the other of the control por-ts 16 with the delivery port 13.
The slide member 22 is provided with a socket 40 Eorm~d inte~rally with the slide membex- 22 to receive a projection 42 on the end of the handle 25. The handle 24 is supported for pivotal movement about a pin 44, the opposite ends of which are supported by an ear 46 and opposed wall 48 formed i.n the body mer~er 20. The pin 44 also supports a pair of collars 50 at opposite sides of the handle 24 to maintain it midway between the ear 46 and wall 48. The 55~7 handle 24 is provided with opposed surfaces 52 forminy a seat for one end of a compression spring 54, the opposite end of which is seated in the generally cup-shaped slide rnember 22 around the socket 40. The spring 54 acts between the seat 52 and the slide member 22 to urge the latter and the seal 34 against the control surface 28.
~ he body member 20 and the slide member 22 are provided with complementary cam means in the form of cam portions 56 on the body member 20 and cam portions 58 on the slide member 22. The cam portions 56 project above the con--trol surf~ce 28 at the opposed longitudinally e~tending walls 60 of the recess 26 as seen in Figures 3 and 4. The cam portions 48 are formed on the bottom of the slide member 22 at opposed sides in proximi-ty to the wall 60 of the bod~
member 20.
In the initlal position of the v~lve 10, as seen in Figures 1 an~ 3, the slide member 22 is in a first position to the left with the cam portions 56 and 58 in proximity to each o-ther. Upon movement of the handle 24 counterclockwise about the pivot pin 44 as seen in Figure 1, the slide member 22 moves toward the right and the ~; cam portions 56 and 58 engage to cause the slide member 22 -to move upwardly against the biasing action of the spring 54 until the cam portion 58 passes f:rom the left side to the right side of the cam portion 56 so that the slide member 22 assumes a second position illustrated in Figure 4. In the first position, seen in Figure 3, the delivery port 13 and control port 14 are in communication with each other.
During movement of the slide member 22 between its first and second positions, as ill.ustrated in Figures 3 and 4, re-s~
spec-tively the slicle member 22 moves upwardly due to -the action of -the complementary cam portions 56 and 58 and remains parallel to the control surface 28 until the slide member reaches its second posi.tlon.
sOth the body member 20 and the slide member 22 can be made of a plastic material reinforced with glass fibers, for exarnple, two-thixds nylon and one-third glass fiber by volume. The body member 20 can be provided with flanges 62 having bolt receiving openings 64 to receive mounting bolts fasterling the body member 20 in position for use.
To explain operation of the valve 10 it can be assumed that it is installed in a motor vehicle and that the source of fluid pressure 12 is in the for~ of vacuum obtained at the intake manifold of an internal combustion engine powering the vehicle. Assuming also that the valve 10 is initially positioned as illustrated in Figure 1, vacuum pressure will be continuously available to the linear actuator 18~ The path of such fluid pressure is from the source 12, through the delivery port 13 to the~control chamber 36 and to the first control port 14 which may be connected by a line 66 in the form of a tube or the like to the right end of the linear ac-tuator 18. The left end of the linear actuator 18 will be in communication with -the atmosphere through another line 68 connected between the linear actuator 18 and the second control port 16 which is open to the recess 26 and to the atmosphere. Consequently, the differential in pressure actiny on the piston 70 will be atmospheric pressure ac-ting at the left and vacuum Al 80 pressure acting at the ri~ht causing the piston 70 ., 58~7 to assume a position at the right end of the linear actua-tor 18. When it is desired to retract the rod 72 of -the linear actuator 18 by moving the piston 70 to the left end of -the cylinder, the handle 24 is moved in a counterclockwise direction as viewed in Figure 1 so that the slide member 22 moves upwardly due to the action oi. the complementary cam portions 56 and 58 so that the slide member passes to the other end of the recess 26 to reengage the seal 34 with -the control surface 28. This brings the delivery port 13 and second control port 16 into comrnunication with each other as illustrated in Figure 4. Consequently, the source of vacuum pressure communica-tes -through the delivery port 13, the co~trol chamber 36 and the con-trol port 16 and line 68 with the right end of the linear actua-tor 18. At the same time, the control port 14 will be in communication with the atmosphere so that the differential in pressure created within the l.inear actuator 1~ causes the piston 70 ; to move to the left to extend the pi.s-ton rod 72. Upon re-turn of the handle 24 in the opposite direction, the pis-ton 70 moves in the opposite direction or to the right.
The operation of the valve is such that the spring 54 continues to urge the slide member 22 downwardly as a result of which the valve 10 has an over-center characteristic, that is, the valve is always located in one or the other of its two possible positions and remains in that position until .it is selectively and manually moved to the other of its two positi.ons.
Ii. desired, and to insure that the valve 10 remains in the selected one of i-ts two positions, a pin 74 is mounted to extend transversely to the handle 24.
55~7 The pin 74 interfers with a slidiny lock pin 75. The lock pin 75 has a lower portion 76 supported for sliding movement vertically relative to the body member as illustrated in Figure l. The lock pin 75 also has an off set portion 77 and a handle portion 78. The handle portion 78 interferes with the pin 74 to prevent movemerlt of the handle 24 when the valve 10 is in one of its two selected positions.
When it is desired to move the handle 24 to the other of its selected positions, the lock pin 75 is pulled upwardly so that the handle 24 can be pivoted with the pin 74 passing under the off set portion 77. After the valve lO is placed in its newly selected position of operation the lock pin 75 can be released so that the handle portion 78 again interferes with the pin 74 to prevent swinging of the handle 24.
A two position control valve has been provided in which a body member and a slide member coact to form a control chamber capable of placing selected ones of a plurality of ports in communication with each other. The control chamber is formed in part by an O-ring which is stretched over a supporting portion on the slide member.
The slide member is movable from one selected position to another selected position ayainst -the biasing action of the spring which serves to maintain the valve in its selected condition.
Referring to Figure 1, the slide member 22 is generally cup-shaped and has a bottom surface 30 which is provided with a rectangular shaped porting ring 32 fcrmed integrally at the underside of the slide member 22.
The porting ring 32 acts as a support for the inner perimeter of a seal 34. The seal 34 is in the form of a circular O-ring and is stretched over the outside perimeter of the rec-tangular porting ring 32. In the position shown in Figure 1, the seal 34 is in engagement with the control surface 28 and defines a movable control chamber 36 which is formed between the bottom of the slide member ~2 and the P/~n~
p~a~ control surface 28. In the position illustrated in Figure 3, the control charnber 36 is located so that the delivery port 13 and control por-t 14 communicate with each other through the control chamber 36~ In Figure 4, the control chamber 36 cornmunicates the other of the control por-ts 16 with the delivery port 13.
The slide member 22 is provided with a socket 40 Eorm~d inte~rally with the slide membex- 22 to receive a projection 42 on the end of the handle 25. The handle 24 is supported for pivotal movement about a pin 44, the opposite ends of which are supported by an ear 46 and opposed wall 48 formed i.n the body mer~er 20. The pin 44 also supports a pair of collars 50 at opposite sides of the handle 24 to maintain it midway between the ear 46 and wall 48. The 55~7 handle 24 is provided with opposed surfaces 52 forminy a seat for one end of a compression spring 54, the opposite end of which is seated in the generally cup-shaped slide rnember 22 around the socket 40. The spring 54 acts between the seat 52 and the slide member 22 to urge the latter and the seal 34 against the control surface 28.
~ he body member 20 and the slide member 22 are provided with complementary cam means in the form of cam portions 56 on the body member 20 and cam portions 58 on the slide member 22. The cam portions 56 project above the con--trol surf~ce 28 at the opposed longitudinally e~tending walls 60 of the recess 26 as seen in Figures 3 and 4. The cam portions 48 are formed on the bottom of the slide member 22 at opposed sides in proximi-ty to the wall 60 of the bod~
member 20.
In the initlal position of the v~lve 10, as seen in Figures 1 an~ 3, the slide member 22 is in a first position to the left with the cam portions 56 and 58 in proximity to each o-ther. Upon movement of the handle 24 counterclockwise about the pivot pin 44 as seen in Figure 1, the slide member 22 moves toward the right and the ~; cam portions 56 and 58 engage to cause the slide member 22 -to move upwardly against the biasing action of the spring 54 until the cam portion 58 passes f:rom the left side to the right side of the cam portion 56 so that the slide member 22 assumes a second position illustrated in Figure 4. In the first position, seen in Figure 3, the delivery port 13 and control port 14 are in communication with each other.
During movement of the slide member 22 between its first and second positions, as ill.ustrated in Figures 3 and 4, re-s~
spec-tively the slicle member 22 moves upwardly due to -the action of -the complementary cam portions 56 and 58 and remains parallel to the control surface 28 until the slide member reaches its second posi.tlon.
sOth the body member 20 and the slide member 22 can be made of a plastic material reinforced with glass fibers, for exarnple, two-thixds nylon and one-third glass fiber by volume. The body member 20 can be provided with flanges 62 having bolt receiving openings 64 to receive mounting bolts fasterling the body member 20 in position for use.
To explain operation of the valve 10 it can be assumed that it is installed in a motor vehicle and that the source of fluid pressure 12 is in the for~ of vacuum obtained at the intake manifold of an internal combustion engine powering the vehicle. Assuming also that the valve 10 is initially positioned as illustrated in Figure 1, vacuum pressure will be continuously available to the linear actuator 18~ The path of such fluid pressure is from the source 12, through the delivery port 13 to the~control chamber 36 and to the first control port 14 which may be connected by a line 66 in the form of a tube or the like to the right end of the linear ac-tuator 18. The left end of the linear actuator 18 will be in communication with -the atmosphere through another line 68 connected between the linear actuator 18 and the second control port 16 which is open to the recess 26 and to the atmosphere. Consequently, the differential in pressure actiny on the piston 70 will be atmospheric pressure ac-ting at the left and vacuum Al 80 pressure acting at the ri~ht causing the piston 70 ., 58~7 to assume a position at the right end of the linear actua-tor 18. When it is desired to retract the rod 72 of -the linear actuator 18 by moving the piston 70 to the left end of -the cylinder, the handle 24 is moved in a counterclockwise direction as viewed in Figure 1 so that the slide member 22 moves upwardly due to the action oi. the complementary cam portions 56 and 58 so that the slide member passes to the other end of the recess 26 to reengage the seal 34 with -the control surface 28. This brings the delivery port 13 and second control port 16 into comrnunication with each other as illustrated in Figure 4. Consequently, the source of vacuum pressure communica-tes -through the delivery port 13, the co~trol chamber 36 and the con-trol port 16 and line 68 with the right end of the linear actua-tor 18. At the same time, the control port 14 will be in communication with the atmosphere so that the differential in pressure created within the l.inear actuator 1~ causes the piston 70 ; to move to the left to extend the pi.s-ton rod 72. Upon re-turn of the handle 24 in the opposite direction, the pis-ton 70 moves in the opposite direction or to the right.
The operation of the valve is such that the spring 54 continues to urge the slide member 22 downwardly as a result of which the valve 10 has an over-center characteristic, that is, the valve is always located in one or the other of its two possible positions and remains in that position until .it is selectively and manually moved to the other of its two positi.ons.
Ii. desired, and to insure that the valve 10 remains in the selected one of i-ts two positions, a pin 74 is mounted to extend transversely to the handle 24.
55~7 The pin 74 interfers with a slidiny lock pin 75. The lock pin 75 has a lower portion 76 supported for sliding movement vertically relative to the body member as illustrated in Figure l. The lock pin 75 also has an off set portion 77 and a handle portion 78. The handle portion 78 interferes with the pin 74 to prevent movemerlt of the handle 24 when the valve 10 is in one of its two selected positions.
When it is desired to move the handle 24 to the other of its selected positions, the lock pin 75 is pulled upwardly so that the handle 24 can be pivoted with the pin 74 passing under the off set portion 77. After the valve lO is placed in its newly selected position of operation the lock pin 75 can be released so that the handle portion 78 again interferes with the pin 74 to prevent swinging of the handle 24.
A two position control valve has been provided in which a body member and a slide member coact to form a control chamber capable of placing selected ones of a plurality of ports in communication with each other. The control chamber is formed in part by an O-ring which is stretched over a supporting portion on the slide member.
The slide member is movable from one selected position to another selected position ayainst -the biasing action of the spring which serves to maintain the valve in its selected condition.
Claims (16)
IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A two position fluid control valve comprising:
a body having a planar control surface, a slide member supported by said body for reciprocating movement relative to said planar surface between first and second positions, a rectilinear porting ring formed integrally on said slide member, an O-ring seal element mounted on said rectilinear porting ring and being in sliding and sealing engagement with said planar control surface, said sealing element forming an endless border of a control chamber formed between said planar surface and said slide member, first, second and third ports opening to said planar surface, said first and second ports being in communication with each other through said control chamber when said slide member is in said first position and said first and third ports being in communication with each other through said control chamber when said slide member is in said second position;
a lever pivoted in an over-center spaced relation to said ports of said planar surface and having an end disposed in a socket formed in said slide for moving said slide member between said first and second positions upon movement of said lever about said pivot;
a spring having opposite ends seated on said lever and on said slide member for urging said slide member towards said planar surface during movement between said first and second positions;
cam means formed integrally with said slide member and with said planar surface and being engageable with each other upon movement of said slide member, between said first and second positions, to move said slide member and said planar surface apart and lift said O-ring from said planar surface, said cam means comprising a plurality of adjacently spaced projections formed on said slide member and said planar surface and each having an arcuate surface.
a body having a planar control surface, a slide member supported by said body for reciprocating movement relative to said planar surface between first and second positions, a rectilinear porting ring formed integrally on said slide member, an O-ring seal element mounted on said rectilinear porting ring and being in sliding and sealing engagement with said planar control surface, said sealing element forming an endless border of a control chamber formed between said planar surface and said slide member, first, second and third ports opening to said planar surface, said first and second ports being in communication with each other through said control chamber when said slide member is in said first position and said first and third ports being in communication with each other through said control chamber when said slide member is in said second position;
a lever pivoted in an over-center spaced relation to said ports of said planar surface and having an end disposed in a socket formed in said slide for moving said slide member between said first and second positions upon movement of said lever about said pivot;
a spring having opposite ends seated on said lever and on said slide member for urging said slide member towards said planar surface during movement between said first and second positions;
cam means formed integrally with said slide member and with said planar surface and being engageable with each other upon movement of said slide member, between said first and second positions, to move said slide member and said planar surface apart and lift said O-ring from said planar surface, said cam means comprising a plurality of adjacently spaced projections formed on said slide member and said planar surface and each having an arcuate surface.
2. The valve of claim 1 and further comprising a lever pivoted in spaced relation to said planar surface and having an end disposed in a socket formed in said slide for moving said slide member between said first and second positions upon movement of said lever about said pivot.
3. The valve of claim 5 and further comprising a spring having opposite ends seated on said lever and on said slide member for urging said slide member towards said planar surface during movement between said first and second positions.
4. The valve of claim 1 wherein said slide member has a rectilinear seat portion, said seal member being a circular O-ring in its as-molded condition and being seated on the perimeter of said rectangular seat in an assembled condition on said slide member.
5. The valve of claim 1 and further comprising means selectively moveable between a position engaging said handle to prevent movement from its selected position and a position permitting movement between said selected positions.
6. A two position fluid control valve, comprising:
a body formed with a generally rectilinear recess which provides Q
planar control surface, and formed with a central supply port and a first and second delivery port, said supply and delivery ports being in communication with said planar control surface;
a slide member disposed for lateral reciprocating movement in said recess relative to said planar surface of said body between first and second positions, said slide member being formed with A rectilinear porting ring facing said planar control surface of said body;
an O-ring seal element mounted on said rectilinear porting ring of said slide member, said O-ring sealing element forming an endless border of a control chamber between said planar control surface and said slide member such that when said slide member is in said first position said supply port is in communication with said first delivery port through said control chamber and said second delivery port is in communication with the atmosphere, and when said slide member is in said second position said supply port is in communication with said second delivery port through said control chamber and said first delivery port is in communication with the atmosphere;
a manually actuable lever for causing the lateral reciprocating movement of said slide member between said first and second positions, said lever having one end disposed in a socket formed in said slide member, and said lever being mounted to said body for an over-center pivotal movement between said first and second positions; and a spring coaxially disposed around a portion of said lever and said socket of said slide member, and having one end seated against an outward extending surface of said lever and the other end seated against said slide member, said spring urging said slide member towards said planar surface such that when said slide member is disposed in said first and second positions said O-ring seal element is in sealing engagemetlt with said planar control surface of said body.
a body formed with a generally rectilinear recess which provides Q
planar control surface, and formed with a central supply port and a first and second delivery port, said supply and delivery ports being in communication with said planar control surface;
a slide member disposed for lateral reciprocating movement in said recess relative to said planar surface of said body between first and second positions, said slide member being formed with A rectilinear porting ring facing said planar control surface of said body;
an O-ring seal element mounted on said rectilinear porting ring of said slide member, said O-ring sealing element forming an endless border of a control chamber between said planar control surface and said slide member such that when said slide member is in said first position said supply port is in communication with said first delivery port through said control chamber and said second delivery port is in communication with the atmosphere, and when said slide member is in said second position said supply port is in communication with said second delivery port through said control chamber and said first delivery port is in communication with the atmosphere;
a manually actuable lever for causing the lateral reciprocating movement of said slide member between said first and second positions, said lever having one end disposed in a socket formed in said slide member, and said lever being mounted to said body for an over-center pivotal movement between said first and second positions; and a spring coaxially disposed around a portion of said lever and said socket of said slide member, and having one end seated against an outward extending surface of said lever and the other end seated against said slide member, said spring urging said slide member towards said planar surface such that when said slide member is disposed in said first and second positions said O-ring seal element is in sealing engagemetlt with said planar control surface of said body.
7. The valve of Claim 6, wherein ssid planar control surface of said body and said slide member are each formed integrally with complementary cam means for causing said slide member to move first upwardly agalnst the biasing ac.tion of said spring when said slide member is being moved between said first and second positions and then downwardly with the biasing action of said spring when said slide member approaches the position to which it is being moved to, such that said O-ring seal element is lifted from said planar control surface only during the movement between said first and second positions.
8. The valve of Claim 7, wherein said cam means comprises a pair of laterally spaced adjacent projections disposed in parallel along the two opposite corresponding sides of both said slide member and said planar control surface.
9. The valve of Claim 8, wherein each of said projections is formed with an arcuate surface, such that the combination of the biasing action of said spring and said cam means tend to force said slide member into one of said first and second positions.
10. The valve of Claim 9, wherein each of said projections are disposed outside of the control chamber formed in part by said O-ring seal element.
11. The valve of Claim 10, wherein said supply port is generally axially aligned with the pivoting point of said lever.
12. The valve of Claim 11, wherein said supply port is a vacuum port.
13. The valve of Claim 12, wherein said slide member, said planar control and said porting ring are all rectangular.
14. A two position fluid control valve, comprising:
body means for providing a pair of delivery ports and a supply port disposed between said delivery ports;
slide means disposed in a recess of said body means for lateral reciprocating movement between a first and second position;
seal means secured to said slide means for providing communication between said supply port and one of said delivery ports when said slide means is in said first position and for providing communication between said supply port and the other of said delivery ports when said slide means is in said second position;
manually actuated lever means mounted to said body means to provide over-center pivoting movement for causing said slide means to move between said first and second positions; and spring biasing means associated with said lever means and complementary cam means integrally formed on opposing surfaces of said body and slide means for acting in cooperation to force said slide means toward one of said first and second positions.
body means for providing a pair of delivery ports and a supply port disposed between said delivery ports;
slide means disposed in a recess of said body means for lateral reciprocating movement between a first and second position;
seal means secured to said slide means for providing communication between said supply port and one of said delivery ports when said slide means is in said first position and for providing communication between said supply port and the other of said delivery ports when said slide means is in said second position;
manually actuated lever means mounted to said body means to provide over-center pivoting movement for causing said slide means to move between said first and second positions; and spring biasing means associated with said lever means and complementary cam means integrally formed on opposing surfaces of said body and slide means for acting in cooperation to force said slide means toward one of said first and second positions.
15. The valve of Claim 17, wherein said cam means comprises a pair of laterally spaced adjacent projections disposed in parallel along the two opposite corresponding sides of both said slide and body means.
16. The valve of Claim 15, wherein each of said projections is formed with an arcuate surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38902682A | 1982-06-16 | 1982-06-16 | |
| US389,026 | 1982-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1195587A true CA1195587A (en) | 1985-10-22 |
Family
ID=23536525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000430467A Expired CA1195587A (en) | 1982-06-16 | 1983-06-15 | Two position control valve |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1195587A (en) |
| DE (1) | DE3321937A1 (en) |
| FR (1) | FR2528933B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6119727A (en) * | 1998-06-16 | 2000-09-19 | Gt Development Corporation | Pneumatic seat valve having a rapid exhaust mode |
| DE102010045680A1 (en) * | 2010-09-17 | 2012-03-22 | Karl Storz Gmbh & Co. Kg | Medical instrument for sucking and rinsing |
| EP3193053B1 (en) * | 2016-01-18 | 2018-05-16 | Siemens Schweiz AG | Valve with a ceramic disc |
| ITUA20161724A1 (en) * | 2016-03-16 | 2017-09-16 | Seko Spa | SELECTOR DEVICE |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2715913A (en) * | 1945-06-30 | 1955-08-23 | John L Taylor | Control valve |
| DE1737237U (en) * | 1954-08-28 | 1957-01-03 | Westinghouse Bremsen Gmbh | COMPRESSED AIR SWITCH DEVICE, IN PARTICULAR FOR THE WORK CYLINDERS OF GEARS. |
| DE1843881U (en) * | 1961-10-21 | 1961-12-21 | Heinz Hoetten | CLAM SEAL. |
| DE2113904A1 (en) * | 1971-03-23 | 1972-09-28 | Kissling Gmbh | Switch for controlling gas currents |
| DE2352477C3 (en) * | 1973-10-19 | 1985-08-22 | Daimler-Benz Ag, 7000 Stuttgart | Switching valve for suction air lines |
| US4213483A (en) * | 1978-11-13 | 1980-07-22 | Robertshaw Controls Company | Reversing valve construction and parts therefor and methods of making the same |
-
1983
- 1983-06-15 CA CA000430467A patent/CA1195587A/en not_active Expired
- 1983-06-16 DE DE19833321937 patent/DE3321937A1/en not_active Ceased
- 1983-06-16 FR FR8309965A patent/FR2528933B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2528933A1 (en) | 1983-12-23 |
| DE3321937A1 (en) | 1984-01-05 |
| FR2528933B1 (en) | 1986-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |