CA2310962A1 - Gate valve for a vacuum system - Google Patents
Gate valve for a vacuum system Download PDFInfo
- Publication number
- CA2310962A1 CA2310962A1 CA 2310962 CA2310962A CA2310962A1 CA 2310962 A1 CA2310962 A1 CA 2310962A1 CA 2310962 CA2310962 CA 2310962 CA 2310962 A CA2310962 A CA 2310962A CA 2310962 A1 CA2310962 A1 CA 2310962A1
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- Canada
- Prior art keywords
- gate
- valve body
- valve
- vacuum system
- orifice
- 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.)
- Abandoned
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Abstract
A gate valve for a wet/dry vacuum system is disclosed. The gate valve includes a valve body having an orifice therein defining an inlet to the vacuum system. A gate is slidably mounted to the valve body and is adapted to open and close the inlet. In the fully opened position, the gate is completely removed from the inlet, and in the fully closed position, the gate completely closes the inlet. The gate is adapted to be positioned in various partially opened positions through the use of a locking mechanism.
Description
PATENT APPLICATION
GATE VALVE FUR A VACUUM SYSTEM
FIELD OF THE INVENTION
ThE present invention generally relates to vacuum systems and, more particularly, to devices for controlling air flow through various passages in vacuum systems.
BACKGROUND OF THE INVENTION
Wetldry vacuum cleaners are used in a variety of settings to collect debris for disposal. In the case of a workshop or manufacturing facility, the debris may need to be collected from various locations throughout the facility.
Accordingly, a portable vacuum cleaner can be positioned anywhere within the facility to collect the debris when appropriate. Alternatively, a relatively long conduit or hose can be connected to the vacuum cleaner and be carried throughout the facility to collect the debris from various locations.
Another option is a centralized vacuum system wherein the source of the vacuum and a debris tank or receptacle are positioned in a fixed location and conduits can extend from the vacuum source in various directions and terminate in outlets or nodes. When the vacuum needs to be in a particular area, the closest outlet or node can be accessed for removal of debris. Such central vacuum systems eliminate the need to move the vacuum source about the facility:
In such centralized vacuum systems, it is known to close particular nodes of the system when not in use to augment the power of the system. A
variety of valves can be used to close such outlets or nodes, all of which suffer certain drawbacks. For example, in one known valve, a plate is slidably associated with a valve body and adapted to slide with respect to. an orifice or opening in the valve body to open and close the orifice. However, the plate is limited in its ability to move with respect to the orifice such that even when in its fully open position, a portion of the orifice is blocked by the plate, thus detrimentally affecting performance of the system by, among other things, generating turbulence within the airflow of the system.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, a gate valve for a vacuum system is provided. The gate valve may include a valve body having an orifice therethrough defining an inlet and an outlet for the vacuum system, and a gate movably mounted to the valve body and adapted to move between a first position blocking the orifice and the second position completely removed from the orifice.
In accordance with other aspects of the invention, the valve body may include ~ channel proximate the orifice with the gate being adapted to slide within the channel. The gate valve may further include a mechanism for supporting the gate in a partially opened positioned. The mechanism may include at least one finger outwardly extending from the gate and adapted to frictionally engage the channel of the valve body. The gate valve may include first and second fingers adapted to cooperate with first and second apertures in the valve body to lock the gate in an open position.
In accordance with another aspect of the invention, a vacuum system is provided which includes a central vacuum source, a plurality of nodes adapted to be placed in communication with the central vacuum source, and a plurality of valves. One valve is positioned between each node and the central vacuum source. Each valve includes a valve body and a gate movably mounted to the valve body. Each valve body includes an orifice therethrough defining an inlet for the vacuum system, and the gate is movable between a first position blocking the inlet and disconnecting one of the nodes from the vacuum source, and a second position completely removed from the inlet and connecting one of the nodes to the vacuum system.
In accordance with yet another aspect of the invention, a gate valve for a vacuum system is provided which includes a valve body having a first side and a second side, an inlet on the first side, an outlet on the second side, a flow passage connecting the inlet to the outlet, a slide chamber defined by a transversely extending opening between the first side and the second side, and a plate slidably movable in the slide chamber from a first position closing the flow passage to a second position wherein the flow passage is fully opened.
These and other aspects and features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
GATE VALVE FUR A VACUUM SYSTEM
FIELD OF THE INVENTION
ThE present invention generally relates to vacuum systems and, more particularly, to devices for controlling air flow through various passages in vacuum systems.
BACKGROUND OF THE INVENTION
Wetldry vacuum cleaners are used in a variety of settings to collect debris for disposal. In the case of a workshop or manufacturing facility, the debris may need to be collected from various locations throughout the facility.
Accordingly, a portable vacuum cleaner can be positioned anywhere within the facility to collect the debris when appropriate. Alternatively, a relatively long conduit or hose can be connected to the vacuum cleaner and be carried throughout the facility to collect the debris from various locations.
Another option is a centralized vacuum system wherein the source of the vacuum and a debris tank or receptacle are positioned in a fixed location and conduits can extend from the vacuum source in various directions and terminate in outlets or nodes. When the vacuum needs to be in a particular area, the closest outlet or node can be accessed for removal of debris. Such central vacuum systems eliminate the need to move the vacuum source about the facility:
In such centralized vacuum systems, it is known to close particular nodes of the system when not in use to augment the power of the system. A
variety of valves can be used to close such outlets or nodes, all of which suffer certain drawbacks. For example, in one known valve, a plate is slidably associated with a valve body and adapted to slide with respect to. an orifice or opening in the valve body to open and close the orifice. However, the plate is limited in its ability to move with respect to the orifice such that even when in its fully open position, a portion of the orifice is blocked by the plate, thus detrimentally affecting performance of the system by, among other things, generating turbulence within the airflow of the system.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, a gate valve for a vacuum system is provided. The gate valve may include a valve body having an orifice therethrough defining an inlet and an outlet for the vacuum system, and a gate movably mounted to the valve body and adapted to move between a first position blocking the orifice and the second position completely removed from the orifice.
In accordance with other aspects of the invention, the valve body may include ~ channel proximate the orifice with the gate being adapted to slide within the channel. The gate valve may further include a mechanism for supporting the gate in a partially opened positioned. The mechanism may include at least one finger outwardly extending from the gate and adapted to frictionally engage the channel of the valve body. The gate valve may include first and second fingers adapted to cooperate with first and second apertures in the valve body to lock the gate in an open position.
In accordance with another aspect of the invention, a vacuum system is provided which includes a central vacuum source, a plurality of nodes adapted to be placed in communication with the central vacuum source, and a plurality of valves. One valve is positioned between each node and the central vacuum source. Each valve includes a valve body and a gate movably mounted to the valve body. Each valve body includes an orifice therethrough defining an inlet for the vacuum system, and the gate is movable between a first position blocking the inlet and disconnecting one of the nodes from the vacuum source, and a second position completely removed from the inlet and connecting one of the nodes to the vacuum system.
In accordance with yet another aspect of the invention, a gate valve for a vacuum system is provided which includes a valve body having a first side and a second side, an inlet on the first side, an outlet on the second side, a flow passage connecting the inlet to the outlet, a slide chamber defined by a transversely extending opening between the first side and the second side, and a plate slidably movable in the slide chamber from a first position closing the flow passage to a second position wherein the flow passage is fully opened.
These and other aspects and features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a diagram depicting a vacuum system according to the present invention;
FIG. 2 is an isometric view of a gate valve body according to the present invention;
FIG. 3 is an isometric view of a gate according to the present invention;
FIG. 4 is a front elevational view of a gate valve body with a gate assembled thereto and in a closed position;
FIG. 5 is a cross-sectional view of FIG. 4 taken generally along line 5-5 of FIG. 4;
FIG. 6 is a front elevational view of the gate valve body with the gate assembled thereto in an open position; and FIG. 7 is a cross-sectional view of FIG. 6 taken generally along line 7-7 of FIG 6.
While the invention is susceptible of various modifications and alternative constructions, certain illustrative embodiments thereof have been shown in the drawings and will be described below in detail. It should be understood, however, that there is no intention to limit the invention to the specific forms disclosed, but nn the contrary the intention is to cover all modifications, alternative constructions, and equivalents found within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings and with specific reference to FIG. 1, a vacuum system according to the present invention is generally depicted by reference numeral 10. The vacuum system 10 includes a central vacuum source 12 adapted to be connected to a plurality of nodes 14. The vacuum source 12 is connected to a waste receptacle or tank '( 5 for collection of debris. The vacuum source 12 may be of any conventional design including devices having motor driven impellers for the generation of a vacuum. Each node 14 has a hose or other suitable conduit 16 extending therefrom for cleaning a respective work region 18. Each hose 16 may be of various length depending on the size and location of the work regions 18. Moreover, if long hoses are used, such hoses may reach intermediate areas 20 between neighboring work regions 18.
In order to open and close each node 14, a gate valve 22 is provided.
Prior to operation of the vacuum system 10, an operator can connect one or more of the hoses 16 to the gate valves 22, with each hose 16 operating within a corresponding work region 18. When the vacuum system 10 is in operation, an operator can open the gate valve 22 that corresponds to the desired work region 16. The debris enters the hose 16 from an open end 23 of the hose 16, travels through the hose 16, passes through the gate valve 22, and collects in the receptacle 15 of the vacuum system 10. To collect debris in a second work region 18, the operator can close the first gate valve 22, open a second gate valve 22 that corresponds to the second work region 18, and collect debris in the second work region 18. The operator may wish to operate the vacuum system 10 in multiple work regions 18 simultaneously.
In such a scenario, the operator can open the gate valves 22 that correspond to the multiple work regions 18.
FIGS. 2-7 illustrate the gate valve 22 in greater detail. The gate valve 22 may comprise a valve body 24 shown best in FIG. 2. The valve body 24 may include a first side 25 and a second side 26 (FIGS. 5 and 7), an inlet 28 on the first side 25, and an outlet 30 on the second side 26. Debris entering the inlet 28 passes through a flow passage 32 that extends along the valve body 24. The debris exits the outlet 30 to the receptacle 15 of the vacuum system 10. A space between the first side 24 and the second side 26 of the valve body 24 defines a slide chamber 34 (FIGS. 2 and 4). The slide chamber 34 is transverse to the direction of the airflow in the flow passage 32. A gate or plate 36 (FIG. 3) slides within the slide chamber 34 to open and close the gate valve 22 by staying clear of, or blocking the airflow in the flow passage 32, respectively.
As shown in FIGS. 4 and 5, the plate 36 can fully block the airflow in the flow passage 32 by being fully inserted in the slide chamber 34. As shown in FIGS. 6 and 7, a substantial part of the plate 36 can be pulled out of the slide chamber 34 to keep the flow passage 32 fully and completely open with no air flow disturbance being caused by the plats 36. Accordingly, airflow turbulence is minimized and vacuum power is maximized.
The plate 36 may comprise a handle 38 to facilitate the sliding of the plate 36 inside the slide chamber 34 by the operator. The first side 25 of the valve body 24 may comprise a cut-out section 40 (FIGS. 2 and 4). The cut-out section 40 provides an opening for the handle 38 so that the plate 36 can be fully inserted inside the slide chamber 34 to block the flow passage 32:
The valve body 24 may further include two locking apertures 42 on the upper lateral portions of the first side 25. The operation of the locking apertures is described below.
FIG. 3 illustrates the plate 36 in greater detail. The plate 36 may comprise locking mechanisms 52 having first cantilever members 54 extending from lateral edges 56 of the plate 36, second cantilever members 58 extending from the first cantilever members 54, and tabs 60 extending from the second cantilever members 58. The tabs 60 include incline members 62 and locking members 64 attached to the incline members 62.
The incline members 62 laterally displace the locking members 64 away from a plane defined by a surface 66 of the plate 36. A bottom section 68 of the plate 36 is semi-circular to complement the semi-circular bottom of the sliding chamber 34 and seal the flow passage 32 when the gate valve 22 is fully closed.
When the plate 36 is fully inserted inside the slide chamber 34 the gate valve 22 is fully closed (FIGS. 4 and 5). To open the gate valve 22, the operator lifts the plate 36 using the handle 38, thus sliding the plate 36 upward inside the slide chamber 34 (FIGS. 6 and 7). The operator, however, encounters slight resistance from the plate 36 when opening the gate valve 22 because the plate 36 does not slide effortlessly inside the slide chamber 34. The thickness of the plate 36 is slightly less than the width of the slide chamber 34. However, a width defined by the plate 36 and the locking mechanism 52 is slightly greater than the width of the slide chamber 34. As a result, the locking members 64 are pressed down by the inner walls of the slide chamber 34. The flexure of the first cantilever members 54 and the second cantilever members 58 result in a frictional force between the surface of the locking members 64 and the inner wall of the slide chamber 34.
Consequently, the frictional contact between the inner wall of the slide chamber 34 and the locking members 64 prevents the plate 36 from sliding effortlessly inside the slide chamber 34.
The plate 36 can remain at any position inside the slide chamber 34 due to the frictional contact between the locking members 64 and the inner wall of the slide chamber 34. Thus, the operator may choose to partially open the gate valve 22 by placing the plate 36 at a position wherein the flow passage 32 is neither fully closed nor fully open. The locking apertures 42 in combination with the locking members 64 prevent the plate 36 from being separated from the slide chamber 34. Also, the locking apertures 42, in combination with the locking members 64, lock the plate 36 in a position wherein the flow passage 32 is fully open. When the plate 36 is pulled up to fully open the flow passage 32, the locking members 64 spring into the locking apertures 42 and prevent the plate 36 from being pulled any further.
To close the gate valve 22, the operator can press down on the handle 38.
Pressing down on the handle 38 when the plate 36 is in a locked position creates a force exerted on the incline members 62 by the lower edges of the locking apertures 42. A downward component of the force exerted on the incline members 62 pushes the locking members down and out of the locking apertures 42, thus allowing the plate 36 to slide downward in the slide chamber 34 to close the gate valve 22.
The present invention may be applied to tank or receptacle type vacuum cleaners and other types of vacuum cleaners, such as upright vacuum cleaners. The gate valves of the present invention can be an integral part of a receptacle of a vacuum cleaner. In such a vacuum cleaner, the receptacle may have several gate valves attached to the receptacle. The gate valves of the present invention may also be sold as an after market kit for vacuum cleaners. The kit may comprise a hose that attaches to the inlet of a vacuum cleaner at one end and splits into several inlet branches at the other end, with each branch having a gate valve that controls the airflow in that branch.
FIG. 1 is a diagram depicting a vacuum system according to the present invention;
FIG. 2 is an isometric view of a gate valve body according to the present invention;
FIG. 3 is an isometric view of a gate according to the present invention;
FIG. 4 is a front elevational view of a gate valve body with a gate assembled thereto and in a closed position;
FIG. 5 is a cross-sectional view of FIG. 4 taken generally along line 5-5 of FIG. 4;
FIG. 6 is a front elevational view of the gate valve body with the gate assembled thereto in an open position; and FIG. 7 is a cross-sectional view of FIG. 6 taken generally along line 7-7 of FIG 6.
While the invention is susceptible of various modifications and alternative constructions, certain illustrative embodiments thereof have been shown in the drawings and will be described below in detail. It should be understood, however, that there is no intention to limit the invention to the specific forms disclosed, but nn the contrary the intention is to cover all modifications, alternative constructions, and equivalents found within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings and with specific reference to FIG. 1, a vacuum system according to the present invention is generally depicted by reference numeral 10. The vacuum system 10 includes a central vacuum source 12 adapted to be connected to a plurality of nodes 14. The vacuum source 12 is connected to a waste receptacle or tank '( 5 for collection of debris. The vacuum source 12 may be of any conventional design including devices having motor driven impellers for the generation of a vacuum. Each node 14 has a hose or other suitable conduit 16 extending therefrom for cleaning a respective work region 18. Each hose 16 may be of various length depending on the size and location of the work regions 18. Moreover, if long hoses are used, such hoses may reach intermediate areas 20 between neighboring work regions 18.
In order to open and close each node 14, a gate valve 22 is provided.
Prior to operation of the vacuum system 10, an operator can connect one or more of the hoses 16 to the gate valves 22, with each hose 16 operating within a corresponding work region 18. When the vacuum system 10 is in operation, an operator can open the gate valve 22 that corresponds to the desired work region 16. The debris enters the hose 16 from an open end 23 of the hose 16, travels through the hose 16, passes through the gate valve 22, and collects in the receptacle 15 of the vacuum system 10. To collect debris in a second work region 18, the operator can close the first gate valve 22, open a second gate valve 22 that corresponds to the second work region 18, and collect debris in the second work region 18. The operator may wish to operate the vacuum system 10 in multiple work regions 18 simultaneously.
In such a scenario, the operator can open the gate valves 22 that correspond to the multiple work regions 18.
FIGS. 2-7 illustrate the gate valve 22 in greater detail. The gate valve 22 may comprise a valve body 24 shown best in FIG. 2. The valve body 24 may include a first side 25 and a second side 26 (FIGS. 5 and 7), an inlet 28 on the first side 25, and an outlet 30 on the second side 26. Debris entering the inlet 28 passes through a flow passage 32 that extends along the valve body 24. The debris exits the outlet 30 to the receptacle 15 of the vacuum system 10. A space between the first side 24 and the second side 26 of the valve body 24 defines a slide chamber 34 (FIGS. 2 and 4). The slide chamber 34 is transverse to the direction of the airflow in the flow passage 32. A gate or plate 36 (FIG. 3) slides within the slide chamber 34 to open and close the gate valve 22 by staying clear of, or blocking the airflow in the flow passage 32, respectively.
As shown in FIGS. 4 and 5, the plate 36 can fully block the airflow in the flow passage 32 by being fully inserted in the slide chamber 34. As shown in FIGS. 6 and 7, a substantial part of the plate 36 can be pulled out of the slide chamber 34 to keep the flow passage 32 fully and completely open with no air flow disturbance being caused by the plats 36. Accordingly, airflow turbulence is minimized and vacuum power is maximized.
The plate 36 may comprise a handle 38 to facilitate the sliding of the plate 36 inside the slide chamber 34 by the operator. The first side 25 of the valve body 24 may comprise a cut-out section 40 (FIGS. 2 and 4). The cut-out section 40 provides an opening for the handle 38 so that the plate 36 can be fully inserted inside the slide chamber 34 to block the flow passage 32:
The valve body 24 may further include two locking apertures 42 on the upper lateral portions of the first side 25. The operation of the locking apertures is described below.
FIG. 3 illustrates the plate 36 in greater detail. The plate 36 may comprise locking mechanisms 52 having first cantilever members 54 extending from lateral edges 56 of the plate 36, second cantilever members 58 extending from the first cantilever members 54, and tabs 60 extending from the second cantilever members 58. The tabs 60 include incline members 62 and locking members 64 attached to the incline members 62.
The incline members 62 laterally displace the locking members 64 away from a plane defined by a surface 66 of the plate 36. A bottom section 68 of the plate 36 is semi-circular to complement the semi-circular bottom of the sliding chamber 34 and seal the flow passage 32 when the gate valve 22 is fully closed.
When the plate 36 is fully inserted inside the slide chamber 34 the gate valve 22 is fully closed (FIGS. 4 and 5). To open the gate valve 22, the operator lifts the plate 36 using the handle 38, thus sliding the plate 36 upward inside the slide chamber 34 (FIGS. 6 and 7). The operator, however, encounters slight resistance from the plate 36 when opening the gate valve 22 because the plate 36 does not slide effortlessly inside the slide chamber 34. The thickness of the plate 36 is slightly less than the width of the slide chamber 34. However, a width defined by the plate 36 and the locking mechanism 52 is slightly greater than the width of the slide chamber 34. As a result, the locking members 64 are pressed down by the inner walls of the slide chamber 34. The flexure of the first cantilever members 54 and the second cantilever members 58 result in a frictional force between the surface of the locking members 64 and the inner wall of the slide chamber 34.
Consequently, the frictional contact between the inner wall of the slide chamber 34 and the locking members 64 prevents the plate 36 from sliding effortlessly inside the slide chamber 34.
The plate 36 can remain at any position inside the slide chamber 34 due to the frictional contact between the locking members 64 and the inner wall of the slide chamber 34. Thus, the operator may choose to partially open the gate valve 22 by placing the plate 36 at a position wherein the flow passage 32 is neither fully closed nor fully open. The locking apertures 42 in combination with the locking members 64 prevent the plate 36 from being separated from the slide chamber 34. Also, the locking apertures 42, in combination with the locking members 64, lock the plate 36 in a position wherein the flow passage 32 is fully open. When the plate 36 is pulled up to fully open the flow passage 32, the locking members 64 spring into the locking apertures 42 and prevent the plate 36 from being pulled any further.
To close the gate valve 22, the operator can press down on the handle 38.
Pressing down on the handle 38 when the plate 36 is in a locked position creates a force exerted on the incline members 62 by the lower edges of the locking apertures 42. A downward component of the force exerted on the incline members 62 pushes the locking members down and out of the locking apertures 42, thus allowing the plate 36 to slide downward in the slide chamber 34 to close the gate valve 22.
The present invention may be applied to tank or receptacle type vacuum cleaners and other types of vacuum cleaners, such as upright vacuum cleaners. The gate valves of the present invention can be an integral part of a receptacle of a vacuum cleaner. In such a vacuum cleaner, the receptacle may have several gate valves attached to the receptacle. The gate valves of the present invention may also be sold as an after market kit for vacuum cleaners. The kit may comprise a hose that attaches to the inlet of a vacuum cleaner at one end and splits into several inlet branches at the other end, with each branch having a gate valve that controls the airflow in that branch.
Claims (22)
1. A gate valve for a vacuum system, comprising:
a valve body having an orifice therethrough, the orifice defining an inlet and an outlet for the vacuum system; and a gate movably mounted to the valve body and adapted to move between a first position blocking the orifice and a second position completely removed from the orifice.
a valve body having an orifice therethrough, the orifice defining an inlet and an outlet for the vacuum system; and a gate movably mounted to the valve body and adapted to move between a first position blocking the orifice and a second position completely removed from the orifice.
2. The gate valve of claim 1 wherein the valve body includes a channel proximate the orifice, the gate being adapted to slide within the channel.
3. The gate valve of claim 2 further including a mechanism for supporting the gate in a partially open position.
4. The gate valve of claim 3 wherein the mechanism includes at least one finger outwardly extending from the gate, the finger being adapted to frictionally engage the channel of the valve body.
5. The gate valve of claim 4 wherein the valve body includes at least one aperture, the finger protruding into the aperture when the gate is in the second position to lock the gate into the second position.
6. The gate valve of claim 5 wherein the valve body includes first and second apertures and the gate includes first and second fingers adapted to cooperate with the first and second apertures.
7. The gate valve of claim 6 wherein the valve body includes a planar section transverse to a substantially cylindrical conduit, the substantially cylindrical conduit defining the orifice, the channel being formed in the planar section, the first and second apertures being formed in the planar section in laterally flanking orientation to the conduit.
8. The gate valve of claim 4 wherein the finger includes a cam surface.
9. The gate valve of claim 1 wherein the vacuum system is a wet/dry vacuum system.
10. A vacuum system, comprising:
a central vacuum source;
a plurality of nodes adapted to be placed in communication with the central vacuum source; and a plurality of valves, one valve positioned between each node and the central vacuum source, each valve including a valve body and a gate movably mounted to the valve body, the valve body having an orifice therethrough defining an inlet for the vacuum system, the gate being movable between a first position blocking the inlet and disconnecting one of the nodes from the vacuum source, and a second position completely removed from the inlet and connecting one of the nodes to the vacuum source.
a central vacuum source;
a plurality of nodes adapted to be placed in communication with the central vacuum source; and a plurality of valves, one valve positioned between each node and the central vacuum source, each valve including a valve body and a gate movably mounted to the valve body, the valve body having an orifice therethrough defining an inlet for the vacuum system, the gate being movable between a first position blocking the inlet and disconnecting one of the nodes from the vacuum source, and a second position completely removed from the inlet and connecting one of the nodes to the vacuum source.
11. The vacuum system of claim 10 wherein each valve body includes a channel proximate the orifice, each gate being adapted to slide within the channel.
12. The vacuum system of claim 11 further including a mechanism for supporting each gate in a partially open position.
13. The vacuum system of claim 12 wherein the mechanism includes at least one finger outwardly extending from each gate, each finger being adapted to frictionally engage the channel of the valve body.
14. The vacuum system of claim 13 wherein each valve body includes at least one aperture, the finger protruding into the aperture where the gate is in the second position to lock the gate into the second position.
15. The vacuum system of claim 14 wherein each valve body includes first and second apertures, and each gate includes first and second fingers adapted to cooperate with the first and second apertures.
16. The vacuum system of claim 15 wherein each valve body includes a planar section transverse to a substantially cylindrical conduit, each substantially cylindrical conduit defining one of the orifices, one of the channels being formed in the planar section, the first and second apertures being formed in the planar section in laterally flanking orientation to the conduit.
17. The vacuum system of claim 13 wherein each finger includes a cam surface.
18. A gate valve for a vacuum system, comprising:
a valve body having a first side and a second side, an inlet on the first side;
an outlet on the second side;
a flow passage connecting the inlet to the outlet;
a slide chamber defined by a transversely extending opening between the first side and the second side; and a plate slidably movable in the slide chamber from a first position closing the flow passage to a second position wherein the flow passage is fully open.
a valve body having a first side and a second side, an inlet on the first side;
an outlet on the second side;
a flow passage connecting the inlet to the outlet;
a slide chamber defined by a transversely extending opening between the first side and the second side; and a plate slidably movable in the slide chamber from a first position closing the flow passage to a second position wherein the flow passage is fully open.
19. The gate valve of claim 18 wherein the valve body includes first and second apertures in the first side of the valve body, and the plate includes first and second locking fingers laterally extending therefrom and adapted to engage the first and second apertures.
20. The gate valve of claim 18 wherein each locking finger includes a first cantilevered member attached to the plate and extending laterally therefrom, a second cantilevered member extending from the first cantilevered member and a cam extending from the second cantilevered member.
21. The gate valve of claim 20 wherein the cam frictionally engages an interior wall of the sliding chamber to hold the plate in a partially open position.
22. The gate valve of claim 18 wherein the plate further includes a user-engagable handle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43530799A | 1999-11-05 | 1999-11-05 | |
| US09/435,307 | 1999-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2310962A1 true CA2310962A1 (en) | 2001-05-05 |
Family
ID=23727862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2310962 Abandoned CA2310962A1 (en) | 1999-11-05 | 2000-06-07 | Gate valve for a vacuum system |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2310962A1 (en) |
| MX (1) | MXPA00010735A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3868269A1 (en) * | 2020-02-24 | 2021-08-25 | Robert Thomas Metall- und Elektrowerke GmbH & Co. KG | Shut-off device for arrangement in a suction line of a central vacuum system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10869586B2 (en) | 2016-11-17 | 2020-12-22 | Karcher North America, Inc. | Portable vacuum and related accessories |
-
2000
- 2000-06-07 CA CA 2310962 patent/CA2310962A1/en not_active Abandoned
- 2000-10-31 MX MXPA00010735 patent/MXPA00010735A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3868269A1 (en) * | 2020-02-24 | 2021-08-25 | Robert Thomas Metall- und Elektrowerke GmbH & Co. KG | Shut-off device for arrangement in a suction line of a central vacuum system |
Also Published As
| Publication number | Publication date |
|---|---|
| MXPA00010735A (en) | 2002-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |