CA2281415A1 - Gate assembly for selectively closing an opening in a structure - Google Patents
Gate assembly for selectively closing an opening in a structure Download PDFInfo
- Publication number
- CA2281415A1 CA2281415A1 CA 2281415 CA2281415A CA2281415A1 CA 2281415 A1 CA2281415 A1 CA 2281415A1 CA 2281415 CA2281415 CA 2281415 CA 2281415 A CA2281415 A CA 2281415A CA 2281415 A1 CA2281415 A1 CA 2281415A1
- Authority
- CA
- Canada
- Prior art keywords
- frame
- hatch
- gate assembly
- assembly according
- opening
- 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
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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/10—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members with special arrangements for separating the sealing faces or for pressing them together
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/316—Guiding of the slide
- F16K3/3165—Guiding of the slide with rollers or balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
a gate assembly for selectively closing an opening in a structure. The gate assembly includes a first frame sealingly affixed against the structure around the opening. A blocking member projects from its front side. A
second frame is also provided, movably mounted in front of and substantially parallel to the first frame so that a lateral displacement of the second frame in a given direction causes the second frame to move closer to the first frame. A hatch is slidably mounted on the second frame. The hatch is movable between three positions: a first position where it is out of registry with the opening, a second position where it is substantially in registry with the opening and has a peripheral side in abutment with the blocking member, and a third position where it sealingly engages the front side of the first frame and closes the opening. The gate assembly also includes an actuator mounted between the hatch and the second frame for urging the hatch into the third position. In operation, the hatch moves from the first to the second position and so as a result of the hatch being then in abutment with the blocking member, the actuating means cause the second frame to move closer to the first frame, thereby bringing the hatch into the third position.
second frame is also provided, movably mounted in front of and substantially parallel to the first frame so that a lateral displacement of the second frame in a given direction causes the second frame to move closer to the first frame. A hatch is slidably mounted on the second frame. The hatch is movable between three positions: a first position where it is out of registry with the opening, a second position where it is substantially in registry with the opening and has a peripheral side in abutment with the blocking member, and a third position where it sealingly engages the front side of the first frame and closes the opening. The gate assembly also includes an actuator mounted between the hatch and the second frame for urging the hatch into the third position. In operation, the hatch moves from the first to the second position and so as a result of the hatch being then in abutment with the blocking member, the actuating means cause the second frame to move closer to the first frame, thereby bringing the hatch into the third position.
Description
GATE ASSEMBLY FOR SELECTIVELY CLOSING
AN OPENING IN A STRUCTURE
FIELD OF THE INVENTION
The present invention relates to gate assemblies for selectively closing openings in wall structures such as conduits or pipes for sewage or supply water and water canals.
o BACKGROUND
A common problem encountered in the manufacturing of water gates resides in the need for good waterproof characteristics without long-term wear of the resilient joints used. Generally, gates with good waterproof qualities rely upon the use of a waterproof joint that is in constant friction is with the sealing surface, the joint being subjected to wear every time the gate is closed or opened. In addition, this friction effect increases the operative force needed to manoeuvre the gate.
Known in the art is U.S. Patent no. 4,832,527 (BACHMANN), disclosing a vertically reciprocable gate assembly for the control of liquid 2o media. The gate assembly has a fixed frame around the port, a vertically movable actuating member and a gate standing therebetween. The gate and actuating member are connected together by links. To close the gate, the actuating member is lowered until the lower side of the gate abuts on a stop, and further lowering of the actuating member results in pushing the 25 gate toward the fixed frame through the effect of the links until it seals the port. However, this assembly has several drawbacks that limit its applicability in the field. The actuating member and the gate both having to be moved, the assembly is hard to operate and to manufacture. This also causes design restrictions on the possible reinforcements of the gate, which limits its resistance to pressure and therefore prevents the building of large gates with this system.
s SUMMARY OF THE INVENTION
An object of the present invention is to provide a gate assembly that closes and opens without wearing out the resilient joint, which is easier to operate and is suitable for large scale applications.
The present invention provides a gate assembly for selectively closing io an opening in a structure. The gate assembly comprises a first frame having a rear side and a front side. The rear side is sealingly affixable against the structure around the opening. A blocking member projects from the front side of the first frame.
A second frame is movably mounted in front of and substantially is parallel to the first frame, so that a lateral displacement of the second frame in a given direction causes the second frame to move closer to the first frame.
A hatch is slidably mounted on the second frame. The hatch is movable between three positions, a first position where it is out of registry 2o with the opening, a second position where it is substantially in registry with the opening and has a peripheral side in abutment with the blocking member, and a third position where it sealingly engages the front side of the first frame and closes the opening.
An actuating device is mounted between the hatch and the second 2s frame for urging the hatch into the third position. In operation, the hatch moves from the first to the second position, and so as a result of the hatch being then in abutment with the blocking member, the actuating device causes the second frame to move closer to the first frame, thereby bringing the hatch into the third position.
AN OPENING IN A STRUCTURE
FIELD OF THE INVENTION
The present invention relates to gate assemblies for selectively closing openings in wall structures such as conduits or pipes for sewage or supply water and water canals.
o BACKGROUND
A common problem encountered in the manufacturing of water gates resides in the need for good waterproof characteristics without long-term wear of the resilient joints used. Generally, gates with good waterproof qualities rely upon the use of a waterproof joint that is in constant friction is with the sealing surface, the joint being subjected to wear every time the gate is closed or opened. In addition, this friction effect increases the operative force needed to manoeuvre the gate.
Known in the art is U.S. Patent no. 4,832,527 (BACHMANN), disclosing a vertically reciprocable gate assembly for the control of liquid 2o media. The gate assembly has a fixed frame around the port, a vertically movable actuating member and a gate standing therebetween. The gate and actuating member are connected together by links. To close the gate, the actuating member is lowered until the lower side of the gate abuts on a stop, and further lowering of the actuating member results in pushing the 25 gate toward the fixed frame through the effect of the links until it seals the port. However, this assembly has several drawbacks that limit its applicability in the field. The actuating member and the gate both having to be moved, the assembly is hard to operate and to manufacture. This also causes design restrictions on the possible reinforcements of the gate, which limits its resistance to pressure and therefore prevents the building of large gates with this system.
s SUMMARY OF THE INVENTION
An object of the present invention is to provide a gate assembly that closes and opens without wearing out the resilient joint, which is easier to operate and is suitable for large scale applications.
The present invention provides a gate assembly for selectively closing io an opening in a structure. The gate assembly comprises a first frame having a rear side and a front side. The rear side is sealingly affixable against the structure around the opening. A blocking member projects from the front side of the first frame.
A second frame is movably mounted in front of and substantially is parallel to the first frame, so that a lateral displacement of the second frame in a given direction causes the second frame to move closer to the first frame.
A hatch is slidably mounted on the second frame. The hatch is movable between three positions, a first position where it is out of registry 2o with the opening, a second position where it is substantially in registry with the opening and has a peripheral side in abutment with the blocking member, and a third position where it sealingly engages the front side of the first frame and closes the opening.
An actuating device is mounted between the hatch and the second 2s frame for urging the hatch into the third position. In operation, the hatch moves from the first to the second position, and so as a result of the hatch being then in abutment with the blocking member, the actuating device causes the second frame to move closer to the first frame, thereby bringing the hatch into the third position.
Other features and advantages of the present invention will be better understood upon reading of the following non-restrictive description of embodiments thereof with reference to the appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of a gate assembly according to a first preferred embodiment of the invention.
Figures 2A and 2B are front views of the gate assembly of figure 1, respectively showing the hatch opened and closed.
to Figures 3A, 3B and 3C are side views of the gate assembly of figure 1 respectively showing the hatch in the first, second and third positions.
Figure 4 is a cross-sectional view along lines IV-IV of figure 2B.
Figure 5 is a front view of a gate assembly according to a second embodiment of the invention.
~5 Figures 6A and 6B are side views of the gate assembly of figure 5, respectively showing the hatch in the second and third positions.
Figure 7 is a perspective view of a hatch according to a further embodiment of the invention.
2o DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to figures 1 to 4, there is shown a gate assembly 10 for selectively closing an opening in a structure (not shown in the figures), according to a first preferred embodiment of the invention. It should be understood that the structure and its opening referred to may be of any 2s kind, such as conduits, ducts or pipes through which sewage or drinking water is channelled.
Referring to figure 1, the assembly 10 has a first frame 12, having a rear side 14 which, in use, is sealingly affixed against the structure, around the opening to be controlled. A blocking member 18 projects from the front side 16 of the first frame 12, preferably extending horizontally along the lower edge thereof.
The assembly 10 also has a second frame 20 movably mounted in front of the first frame 12. The second frame 20 extends substantially s parallel to the first frame 12 and is mounted in such a manner that a lateral displacement of this second frame 20 causes it to move closer to the first frame 12. For this purpose, the first and second frames 12 and 20 are preferably fastened to each other by connecting members extending between them, such as, for example, a distribution of elongated joining 1o members 22 each having first and second ends 24 and 26 pivotally connected to the first and the second frames 12 and 20, respectively. The elongated joining members 22 are preferably provided on each side of the second frame 20 in pairs, their second ends 26 of each pair extending on opposite outer sides of the second frame 20.
is Referring to figures 2A and 2B, a hatch 28 is slidably mounted on the second frame 20. The hatch 28 is preferably made of structurally reinforced material so that it may support water pressure against it. The second frame 20 preferably includes a pair of spaced-apart elongated side rails 36 along which the hatch 28 extends and is guided. A top transverse structural 2o member 38 extends between the upper ends 40 of the side rails 36. An actuating device, for example in the form of a threaded stem 42 or a worm screw, is mounted between the hatch 28 and the second frame 20. The upper end 44 of the stem 42 is in screwing engagement with the top transverse structural member 38, and its lower end 46 is secured to the 2s hatch 28. In this manner, a vertical force may be applied between the hatch 28 and the second frame 20. In the illustrated embodiment, the stem 42 is operated through a gearbox 47, provided with a crank 48, mounted onto the top structural member 38 (see figures 3A, 3B,and 3Cy. Of course, any other appropriate type of operator may alternatively be used, such as a 3o hydraulic or pneumatic cylinder, an electric actuator, etc.
Referring to figures 3A, 3B and 3C, there is shown that the hatch 28 is movable between three positions. In the first position (figure 3A), the hatch 28 is out of registry with the opening, which should be located behind the first frame 12 and therefore the gate assembly 10 is opened for 5 free water circulation. In the second position (figure 3B), the hatch 28 is substantially in registry with the opening and has a peripheral side 30 in abutment with the blocking member 18. Finally, in the third position (figure 3C), the hatch 28 sealingly engages the front side 16 of the first frame 12, closing the opening. To close the gate, the actuating device is operated and, o as a result, the hatch 28 is lowered from the first to the second position, where it abuts on the blocking member 18. At this point, the actuator applies a downward force 32 on the hatch 28. As a result, since the actuator is mounted between the hatch 28 and the second frame 20, an opposed upward force 34 is applied on the second frame 20. The movement of the second frame 20 being restricted by the connecting members 22, the force causes the second frame 20 to move closer to the first frame 12, thereby bringing the hatch 28 into the third position where the gate assembly 10 is in a closed state.
A peripheral seal 70 is preferably provided on the rear side of the 2o hatch 28 which faces the first frame 12, the seal 70 making contact with the first frame 12 around the opening when the hatch 28 is in the third position. As it may be seen in figures 3B and 3C, the seal 70 has a predetermined thickness for compression against the first frame 12 when the hatch 28 is in the third position. The seal 70 is preferably made of extruded synthetic rubber and is welded by injection at the corners of the hatch 28.
Referring to figure 4, there is shown a more detailed view of an elongated joining member 22. The joining member 22 has a central portion 23 extending between the first and second ends 24 and 26. As explained 3o above, the first end 24 is attached to the first frame 12, and the second end 26 is attached to the second frame 20. Each of the first and second ends 24 and 26 has a transversal hole 50 through which a pin 52 extends, each pin 52 being firmly attached to the corresponding frame 12 or 20. The ends 24, 26 of the elongated joining member 22 are rotatable around the respective pins 52. In the illustrated embodiment, the central portion 23 is made of brass and the pins 52 are made of stainless steel, and grease is preferably provided between their respective surfaces to facilitate the rotation of the elongated joining member 22. O-rings 54 may also be provided to prevent any displacement of the grease away from the contact 1o area. An axial displacement of the joining member 22 is prevented at each end by blocking plates 56 and bolts 58.
Referring to figures 5, 6A and 6B, there is shown a second embodiment of the present invention where the connecting members are formed by a distribution of sliding assemblies 60. Each sliding assembly 60 ~s has a sliding track 62, which has an end 64 secured to the first frame 12.
The sliding track 62 extends slantingly between the first and second frames 12 and 20. In each assembly 60, a guided moving element 66 is secured to the second frame 20 and guided by the corresponding sliding track 62. The guided moving elements 66 are preferably secured on opposite sides of the 2o second frame 20. As with the elongated joining members 22 of the first embodiment, the sliding assemblies 60 are preferably provided in pairs and on each side of the second frame 20.
Referring to figure 7, there is shown a hatch 28 according to a preferred embodiment of the invention. The hatch 28 preferably has 2s opposite outer side channels 68 cooperating with the side rails 36 of the second frame 20 (see figure 1 ). Preferably, sliding bearing channels 69 made of ultra high molecular weight polyurethane (UHMWPE) are located inside the side channels 68.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of a gate assembly according to a first preferred embodiment of the invention.
Figures 2A and 2B are front views of the gate assembly of figure 1, respectively showing the hatch opened and closed.
to Figures 3A, 3B and 3C are side views of the gate assembly of figure 1 respectively showing the hatch in the first, second and third positions.
Figure 4 is a cross-sectional view along lines IV-IV of figure 2B.
Figure 5 is a front view of a gate assembly according to a second embodiment of the invention.
~5 Figures 6A and 6B are side views of the gate assembly of figure 5, respectively showing the hatch in the second and third positions.
Figure 7 is a perspective view of a hatch according to a further embodiment of the invention.
2o DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to figures 1 to 4, there is shown a gate assembly 10 for selectively closing an opening in a structure (not shown in the figures), according to a first preferred embodiment of the invention. It should be understood that the structure and its opening referred to may be of any 2s kind, such as conduits, ducts or pipes through which sewage or drinking water is channelled.
Referring to figure 1, the assembly 10 has a first frame 12, having a rear side 14 which, in use, is sealingly affixed against the structure, around the opening to be controlled. A blocking member 18 projects from the front side 16 of the first frame 12, preferably extending horizontally along the lower edge thereof.
The assembly 10 also has a second frame 20 movably mounted in front of the first frame 12. The second frame 20 extends substantially s parallel to the first frame 12 and is mounted in such a manner that a lateral displacement of this second frame 20 causes it to move closer to the first frame 12. For this purpose, the first and second frames 12 and 20 are preferably fastened to each other by connecting members extending between them, such as, for example, a distribution of elongated joining 1o members 22 each having first and second ends 24 and 26 pivotally connected to the first and the second frames 12 and 20, respectively. The elongated joining members 22 are preferably provided on each side of the second frame 20 in pairs, their second ends 26 of each pair extending on opposite outer sides of the second frame 20.
is Referring to figures 2A and 2B, a hatch 28 is slidably mounted on the second frame 20. The hatch 28 is preferably made of structurally reinforced material so that it may support water pressure against it. The second frame 20 preferably includes a pair of spaced-apart elongated side rails 36 along which the hatch 28 extends and is guided. A top transverse structural 2o member 38 extends between the upper ends 40 of the side rails 36. An actuating device, for example in the form of a threaded stem 42 or a worm screw, is mounted between the hatch 28 and the second frame 20. The upper end 44 of the stem 42 is in screwing engagement with the top transverse structural member 38, and its lower end 46 is secured to the 2s hatch 28. In this manner, a vertical force may be applied between the hatch 28 and the second frame 20. In the illustrated embodiment, the stem 42 is operated through a gearbox 47, provided with a crank 48, mounted onto the top structural member 38 (see figures 3A, 3B,and 3Cy. Of course, any other appropriate type of operator may alternatively be used, such as a 3o hydraulic or pneumatic cylinder, an electric actuator, etc.
Referring to figures 3A, 3B and 3C, there is shown that the hatch 28 is movable between three positions. In the first position (figure 3A), the hatch 28 is out of registry with the opening, which should be located behind the first frame 12 and therefore the gate assembly 10 is opened for 5 free water circulation. In the second position (figure 3B), the hatch 28 is substantially in registry with the opening and has a peripheral side 30 in abutment with the blocking member 18. Finally, in the third position (figure 3C), the hatch 28 sealingly engages the front side 16 of the first frame 12, closing the opening. To close the gate, the actuating device is operated and, o as a result, the hatch 28 is lowered from the first to the second position, where it abuts on the blocking member 18. At this point, the actuator applies a downward force 32 on the hatch 28. As a result, since the actuator is mounted between the hatch 28 and the second frame 20, an opposed upward force 34 is applied on the second frame 20. The movement of the second frame 20 being restricted by the connecting members 22, the force causes the second frame 20 to move closer to the first frame 12, thereby bringing the hatch 28 into the third position where the gate assembly 10 is in a closed state.
A peripheral seal 70 is preferably provided on the rear side of the 2o hatch 28 which faces the first frame 12, the seal 70 making contact with the first frame 12 around the opening when the hatch 28 is in the third position. As it may be seen in figures 3B and 3C, the seal 70 has a predetermined thickness for compression against the first frame 12 when the hatch 28 is in the third position. The seal 70 is preferably made of extruded synthetic rubber and is welded by injection at the corners of the hatch 28.
Referring to figure 4, there is shown a more detailed view of an elongated joining member 22. The joining member 22 has a central portion 23 extending between the first and second ends 24 and 26. As explained 3o above, the first end 24 is attached to the first frame 12, and the second end 26 is attached to the second frame 20. Each of the first and second ends 24 and 26 has a transversal hole 50 through which a pin 52 extends, each pin 52 being firmly attached to the corresponding frame 12 or 20. The ends 24, 26 of the elongated joining member 22 are rotatable around the respective pins 52. In the illustrated embodiment, the central portion 23 is made of brass and the pins 52 are made of stainless steel, and grease is preferably provided between their respective surfaces to facilitate the rotation of the elongated joining member 22. O-rings 54 may also be provided to prevent any displacement of the grease away from the contact 1o area. An axial displacement of the joining member 22 is prevented at each end by blocking plates 56 and bolts 58.
Referring to figures 5, 6A and 6B, there is shown a second embodiment of the present invention where the connecting members are formed by a distribution of sliding assemblies 60. Each sliding assembly 60 ~s has a sliding track 62, which has an end 64 secured to the first frame 12.
The sliding track 62 extends slantingly between the first and second frames 12 and 20. In each assembly 60, a guided moving element 66 is secured to the second frame 20 and guided by the corresponding sliding track 62. The guided moving elements 66 are preferably secured on opposite sides of the 2o second frame 20. As with the elongated joining members 22 of the first embodiment, the sliding assemblies 60 are preferably provided in pairs and on each side of the second frame 20.
Referring to figure 7, there is shown a hatch 28 according to a preferred embodiment of the invention. The hatch 28 preferably has 2s opposite outer side channels 68 cooperating with the side rails 36 of the second frame 20 (see figure 1 ). Preferably, sliding bearing channels 69 made of ultra high molecular weight polyurethane (UHMWPE) are located inside the side channels 68.
While embodiments of this invention have been illustrated in the accompanying drawings and described above, it will be evident to those skilled in the art that changes and modifications may be made therein without departing from the essence of this invention. All such modifications s or variations are believed to be within the scope of the invention as defined by the claims appended hereto.
Claims (15)
1. A gate assembly for selectively closing an opening in a structure, the gate assembly comprising:
a first frame having a rear side sealingly affixable against the structure around the opening, and a front side;
a blocking member projecting from the front side of the first frame;
a second frame movably mounted in front of and substantially parallel to the first frame so that a lateral displacement of the second frame in a given direction causes the second frame to move closer to the first frame;
a hatch slidably mounted on the second frame and movable between a first position where the hatch is out of registry with the opening, a second position where the hatch is substantially in registry with the opening and has a peripheral side in abutment with the blocking member, and a third position where the hatch sealingly engages the front side of the first frame and closes the opening; and actuating means mounted between the hatch and the second frame for urging the hatch into the third position so that, in operation, the hatch moves from the first to the second position and so as a result of the hatch being then in abutment with the blocking member, causes the second frame to move closer to the first frame, thereby bringing the hatch into the third position.
a first frame having a rear side sealingly affixable against the structure around the opening, and a front side;
a blocking member projecting from the front side of the first frame;
a second frame movably mounted in front of and substantially parallel to the first frame so that a lateral displacement of the second frame in a given direction causes the second frame to move closer to the first frame;
a hatch slidably mounted on the second frame and movable between a first position where the hatch is out of registry with the opening, a second position where the hatch is substantially in registry with the opening and has a peripheral side in abutment with the blocking member, and a third position where the hatch sealingly engages the front side of the first frame and closes the opening; and actuating means mounted between the hatch and the second frame for urging the hatch into the third position so that, in operation, the hatch moves from the first to the second position and so as a result of the hatch being then in abutment with the blocking member, causes the second frame to move closer to the first frame, thereby bringing the hatch into the third position.
2. A gate assembly according to claim 1, wherein the second frame is connected to the first frame with connecting means extending therebetween.
3. A gate assembly according to claim 2, wherein the connecting means comprise a distribution of elongated joining members having first and second ends pivotally connected to the first and second frame, respectively.
4. A gate assembly according to claim 3, wherein the second ends of the joining members extend on opposite outer side surfaces of the second frame.
5. A gate assembly according to claim 2, wherein the connecting means comprise a distribution of sliding assemblies each comprising:
a sliding track having an end secured to the first frame, and extending slantingly between the first and second frames; and a guided moving element secured to the second frame and guided by the sliding track.
a sliding track having an end secured to the first frame, and extending slantingly between the first and second frames; and a guided moving element secured to the second frame and guided by the sliding track.
6. A gate assembly according to claim 5, wherein the guided moving elements are secured on opposite side surfaces of the second frame.
7. A gate assembly according to claim 1, wherein the second frame comprises:
a pair of spaced apart, elongated side rails between which the hatch extends and along which the hatch is guided, the rails having upper and lower ends;
a top transverse structural member extending between the upper ends of the side rails.
a pair of spaced apart, elongated side rails between which the hatch extends and along which the hatch is guided, the rails having upper and lower ends;
a top transverse structural member extending between the upper ends of the side rails.
8. A gate assembly according to claim 7, wherein the hatch has opposite side channels located on outer sides of said hatch, and sliding bearing channels located inside each of the side channels, said sliding bearing channels cooperating with the elongated side rails of the second frame.
9. A gate assembly according to claim 8, wherein the sliding bearing channels of the hatch are made of ultra high molecular weight polyurethane (UHMWPE).
10. A gate assembly according to claim 7, wherein the actuating means comprise a threaded stem having an upper end in screwing engagement with the top transverse structural member and a lower end secured to the hatch.
11. A gate assembly according to claim 10, wherein the actuating means comprise a gearbox having a crank connected thereto, said gearbox being mounted onto the top transverse structural member and operating the stem.
12. A gate assembly according to claim 1, wherein the hatch has a rear side facing the first frame and a peripheral seal is provided on said rear side so that the seal makes contact with the first frame atound the opening when the hatch is in the third position.
13. A gate assembly according to claim 12, wherein the seal has a thickness so that the seal is compressed by the hatch against the first frame when the hatch is in the third position.
14. A gate assembly according to claim 12, wherein the seal is made of extruded synthetic rubber and is welded by injection at corners of the hatch.
15. A gate assembly according to claim 1, wherein the hatch is made of structurally reinforced material so that said hatch is able to support water pressure thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2281415 CA2281415A1 (en) | 1998-09-25 | 1999-09-03 | Gate assembly for selectively closing an opening in a structure |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2245987 CA2245987A1 (en) | 1998-09-25 | 1998-09-25 | Double action locking valve |
| CA2,245,987 | 1998-09-25 | ||
| CA 2281415 CA2281415A1 (en) | 1998-09-25 | 1999-09-03 | Gate assembly for selectively closing an opening in a structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2281415A1 true CA2281415A1 (en) | 2000-03-25 |
Family
ID=31189122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2281415 Abandoned CA2281415A1 (en) | 1998-09-25 | 1999-09-03 | Gate assembly for selectively closing an opening in a structure |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2281415A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897444A (en) * | 2012-09-27 | 2013-01-30 | 徐州天地重型机械制造有限公司 | Dry sand silo discharging device |
-
1999
- 1999-09-03 CA CA 2281415 patent/CA2281415A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897444A (en) * | 2012-09-27 | 2013-01-30 | 徐州天地重型机械制造有限公司 | Dry sand silo discharging device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2009260245B2 (en) | Automatically sealing door and door system | |
| US4470576A (en) | Slide valve assembly | |
| US20100294482A1 (en) | Variable Bore Packer for a Blowout Preventer | |
| GB2521932A (en) | A locking device | |
| US20070164248A1 (en) | Valves | |
| US5141361A (en) | Door seal for water slide gates | |
| CA2274238C (en) | Gate assembly for a double disk gate valve | |
| US4220420A (en) | Sealing means, primarily for a sluice gate | |
| CN106795737A (en) | For window OR gate, moveable wing as push-and-pull wing or moveable lifting push-and-pull wing sealing device | |
| US5974705A (en) | Snubber for excavator bucket door | |
| CA2281415A1 (en) | Gate assembly for selectively closing an opening in a structure | |
| CN1307359C (en) | One-way clutch device for driving device of door sash or window sash | |
| CH688354A5 (en) | Protection device for closure edges of force-actuated devices, e.g. for doors of railway vehicles | |
| US3401527A (en) | Sluice gate | |
| US3434692A (en) | Bifaced wedged gate valve | |
| JP4377356B2 (en) | Floor-supported waterproof door structure | |
| DE4404216C2 (en) | Device for watertight sealing of a building opening | |
| US4036260A (en) | Gate valve with expandable and contractable closure member | |
| JPS61112870A (en) | Self-cleaning valve for powdered, granular and laver-like product | |
| US4288059A (en) | Sluice gate | |
| JPH1061786A (en) | Gate valve device for powder | |
| DE4037862C2 (en) | ||
| WO1981002594A1 (en) | Sealing means,primarily for a penstock or sluice gate | |
| CN212899823U (en) | Sealing gate valve with good sealing performance | |
| CA1124531A (en) | Sluice gate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |