CA1184228A - Sealing arrangement for vertical top mounted pump switches - Google Patents
Sealing arrangement for vertical top mounted pump switchesInfo
- Publication number
- CA1184228A CA1184228A CA000401497A CA401497A CA1184228A CA 1184228 A CA1184228 A CA 1184228A CA 000401497 A CA000401497 A CA 000401497A CA 401497 A CA401497 A CA 401497A CA 1184228 A CA1184228 A CA 1184228A
- Authority
- CA
- Canada
- Prior art keywords
- gasket
- switch
- water
- motor
- communication port
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides an effective manner for combining a known vertical pump switch with a particular motor top plate. Basically, the switch has a number of water entry points which must be sealed or controlled to such that the resulting combination satisfies the standards specified by the Canadian Standards Association. One such switch is of the type manufactured by Crouse-Hinds (trademark) under Catalogue 84594 AM. To adapt this switch for mounting thereof to a top mount motor plate, a gasket is provided which cooperates with the switch and the motor top plate to prevent water passing through a water entry point into the motor housing. This gasket in some cases seals the water entry points without requiring substantially continuous support contact of said gasket about the water entry points and in other cases merely directs the flow of water beyond the motor casing. The gasket is preferably made of a neoprene material and may also carry an adhesive layer.
The present invention provides an effective manner for combining a known vertical pump switch with a particular motor top plate. Basically, the switch has a number of water entry points which must be sealed or controlled to such that the resulting combination satisfies the standards specified by the Canadian Standards Association. One such switch is of the type manufactured by Crouse-Hinds (trademark) under Catalogue 84594 AM. To adapt this switch for mounting thereof to a top mount motor plate, a gasket is provided which cooperates with the switch and the motor top plate to prevent water passing through a water entry point into the motor housing. This gasket in some cases seals the water entry points without requiring substantially continuous support contact of said gasket about the water entry points and in other cases merely directs the flow of water beyond the motor casing. The gasket is preferably made of a neoprene material and may also carry an adhesive layer.
Description
~4~
The present invention relates to vertical sumps which have a top mounted switch for controlling the operation of the pump. ~his switch is connected to a float mechanism to turn the pump on and off, based on certain fluid levels. In particular the present invention is directed to a unique method of adapting a top mount switch and a motor top plate having an aperture for communicating with this switch, in a manner whereby the resulting combination satisfies the minimum CSA standards for this type of unit. This is accomplished through the use of a gasket and baffle member which cooperate with the top plate and the switch to provide a water passageway, directing water which enters the switch outwardly away from the aperture of the top motor plate.
A top mount switch commonly available in the United States for sump pumps is manufactured by Crouse-Hinds ~trademark) by the Arrow Hart Division. It is referred to as a sump pump switch catalogue 84594AM and has a very definite two position mechanism with a snap action between these two positions. The action of this switch is less sensitive then the previously used microswitches on sump pumps. Therefore, it is desirable to combine this known sump pump switch with the motors presently used in Canada and the Vnited States. Motors of the type having an aperture in the top motor plate for receiving a top mount switch are manufactured by Canadian General ~lectric Type XH
Model 4J589JS or equivalent Emmerson Model S63NXGED or e~uivalent as well as others. However, the switch and the motor top plate are not immediately compatible and an effective way to marry these two components is required.
The present invention provides a very simple solution to the problem of combining this known sump pump switch and others of a similar design and shape with the normally used Canadian sump pump motors.
This type of pump must meet certain CSA standards and, since this is an indoor use pump, it must satisfy the standard for dripprooF enclosures. This is achieved by use of a gasket member positioned between the top motor plate and the switch, which cooperates with the switch to prevent water entering the communication port without requiring substantially continuous support of the gasket about the water entry point.
In a vertical pump according to an aspect of the invention a particular motor top plate switch and gasket are combined. The motor top plate has a top communication port for communicating with the switch which has a downwardly extending skirt having a lower planar perimeter surface for seating of the switch to said motor top plate. The switch has at least one aperture at least partially interior to the communication port through which water would enter with the switch seated on the motor top plate about the communication port. The gasket is disposed intermediate the top plate and the switch and has an area for sealingly engaging about the communication port and extending inwardly thereof in at least a selective region for extending beyond and closing the at least one aperture at the lower periphery thereof.
Means for maintaining the gasket in contact with said switch and about the at least one aperture in a manner -to prevent entry of water through the at least one aperture and into the communication port when the switch, the gasket and the means for maintaining are secured on the motor top plate are provided. This arrangement does not require substantially continuous support of the gasket about the water entry point.
Preferred embodiments of the invention are shown in the drawings wherein:
Figure 1 is a perspective view of a vertical sump pump including the top mounted switch;
Figure 2 is a partial top view with the switch mounted on the top plate of the motor;
Figure 3 is a partial exploded perspective view illustrating the structure of the switch gasket and aperture in the top motor plate;
Figure 4 is a perspective view of the gasket and the interior portion of the switch; and Figure 5 is a partial side view illustrating a cut away through the exterior portion of the switch along line 5-5 of Figure 4. - /
:
'~
The sump pump of Figure 1 generally shown as 2 includes a top mount motor 4 having a top motor mount plate 6, which supports switch 8. The motor drives an impeller located within the base 10 of the sump pump and the motor is shut on and off by the float 12. With this particular switch, the float is connected to the arm 14 of the switch by a rod, in contrast to the commonly used weights connected to a switch by a string or cable.
A switch of this type and shape is manufactured by Crouse-Hinds ttrademark), through their Arrow Hart Division under part number catalogue 84594AM and is designed as a sump pump switch. This type of switch has gained acceptance in the United States and is designed to be accepted by various motor top plates. In this regard, the switch is provided with two circular apertures ll for mounting of the switch to the motor top plate, as well as two elongate s]ots 15 which can also be used to allow the switch to be adapted for other types motor top plates. Unfortunately, this switch is not compatible with all motor top plates and is not compatible with the motor top plates normally manufactured by Canadian General Electric or Emmerson for this type of pump. Furthermore, difficulties arise in that the Canadian Standards Association must approve a sump pump when equipped with this type of switch and, although both the motor of the pump and the switch are CSA approved, the resulting combination, if combined in the normal manner, will not satisfy the requirements for this type of de~ice, namely, a dripproof enclosure as stated in CSA Standards C22.2 no. 108, 1975 - Liyuid Pumps. The motor housin~ is considered a special purpose enclosures 2 as defined ir, CSA
~ t~
Standards C22.2 no. 99 - 1976, Section 6.3.2, which requires that IlThe component shall have the tops and sides exposed to a spray simulating a rainfall for one hour at the rate of 1 inch plus or minus half an inch per hour at an angle up to 15 degrees from the vertical. Water shall not come into contact with the enclosed electrical equipment during the test."
This switch has a number oE water entry points directly below the lever 14, as shown in Figure 4, where these water entry points are labelled as 21 and 22. These water entry points are inherent to the switch and are a result of the method of assembling of the switch, and if the switch had to be redesigned to comply with this Standard, the benefits of using a switch that is readily available from the shelf would be lost. Furthermore, when this switch is combined with the motor top plate of a Canadian General Electric motor for use in a sump pump, the elongate slots 15 overhang the opening in the motor top plate and these must be sealed to satisfy the CSA requirements.
By providing a combination, as shown in Figure 3, the motor top plate 6 with the opening 7 to the interior of the motor is effectively combined with the switch 8 to provide a device which meets the CSA requirements through the use of a gasket member 30. This gasket member has a deformable tab 32 which is bent at an angle to the normal plane of the gasket for insertion within the recessed area of the switch. This deiormable tab or baffle is positioned within the switch, such that water that enters through the water entry points 21 and 22 does not enter the interior of the motor through opening 7. The particular method of redirecting this water to the exterior of the motor will be explained in relation to Figures 3, 4 and 5.
As can be seen in Figure 3, the gasket 30 has a straight back portion 33, generally perpendicular side edges 34 and 35, having a front edge portion 36, having a straight segment 37 at an obtuse angle to the edge 35 and a curved segment 39. A cut out interior portion 40 is provided, such that the wires from the motor can be connected to the switch. This interior cut out portion provides a fairly wide area at the side edges 34 and 35, whereby the elongate slots 15 are covered when the switch and gasket motor plate are combined, such that water cannot pass through the slots 15a and 15b. It should also be note that the slots 15 are not entirely to the exterior of the aperture 7 and, therefore, the gasket 30 can be provided with an adhesive surface for securement to the lower flange 5 of the switch.
As shown in Figure 4, the switch has a downwardly e~tending flange 5 which defines a lower generally planar periphery for seating of the switch to the motor top plate.
This flange also defines a recessed interior switch portion generally shown as 57 which includes a generally rectangular deep recessed area 54, which adjoins a smaller rectangular recess 52 along one side of the deep recessed area. The water entry points 21 and 22 are located within the rectangular recess area 52 and, if the switch is mounted without the gasket 30 to a motor top plate, the water would drip down permanent baffle 50 and into the electrical motor through aperture 7 in the top plate. To overcome this, the gasket 3Q is provided with the de~orrnable tab or baffle 320 The gasket is preferably made of a closed cell neoprene material with a Mylar ltrademark) layer carrying an adhesive, such that the upper surface of gasket 30 may be secured to the planar portion of flange 5. In this way, the gasket is brought into sealing contact about the elongate slots 15a and 15b and water will not pass through these areas into the motor enclosure. The tab 32 is deformed, as shown in Figure 5, and is forced upwardly within the small rectangular recess and partially within the deep recess area 54. The tab is designed to go to the exterior of baffle 50 and extend between the baffle and the side wall 56 and the wall 58, which partially define the recessed areas. In this manner, the deformable tab forms a barrier such that the rectangular recess 52 is isolated from the interior portion of the switch.
The dashed line shown as 60 in Figure 4 represents the location of the straight edge 37 oE the gasket and the curved edge 39, when assembled to the switch member. ~hus, the gasket member as shown is not designed to go to the exterior of the flange immediately below the switch 14, but is actually within the periphery of the flange to form the baffle and lip arrangement as generally shown in Figure 5.
The tab 32 is deformed from the normal plane of the gasket and cooperates with the lower portion of the gasket adjacent the tab to form a lip, whereby water which enters through entry points 21 and 22 either falls directly through the rectangular recess 52 or contacts the baffle or tab 32 and flows down along it to the lip portion 31 of the gasket with the water moving outwardly to the periphery of the motor casing. In this way, a conduit is effectively provided such that, even if water enters through the water entry points, it does not flow within the switch to the internal electrical components of the motor.
Such a system sati~fies the CSA standards for dripproof enclosures and provides a simple solution for adapting this available switch for sump pumps to motor plates of the type produced by Canadian General Electric.
This particular solution, of having a deformable tab 32 which forms a baffle and cooperates with the portion of the gasket immediately below the tab to provide a lip, whereby the tab and lip effectively provide a conduit or passageway for directing water which enters through the top portion of the switch outwardly beyond the motor casing, is a unique system where water is allowed to enter within the switch, but is controlled and directed such that it does not enter the area of the switch immediately above the electrical components of the motor. It is clear that this system would function in a similar manner if, the deformable tab 32 was replaced with a baffle member for insertion between the permanent baffle 50 of the switch and the walls 5S and 58, with this baffle cooperating with the portion gasket immediately below to effectively provide this conduit for directing water to the exterior of the motor casing~
This system provides a very economical manner for effectively combining the available switch with commonly used motor top plates. Furthermore, the gasket serves to seal any other apertures within the flange 5 of the switch, due to the cooperation of the gasket material and in some cases the adhesive substance which is may be carrled by the gasket. Jt should be noted that the adhesive is preferred as the slotted areas are not directly above a support on the motor top plate andr therefore, one cannot merely rely on the compression of the gasket. However, where neoprene is used, this material is readily deformable and often mounting pressure is sufficient to maintain this sealing cooperation without the need for an adhesive.
Motors for use in this system are not limited by the specific reference to the models manufactured by Emmerson or Canadian General Electric and are only examples of existing models which can be used with this system. Other Canadian, United States or other manfacturers of motors may also be able to utilize this system.
Although preferred embodiments of the invention have been described herein in detail, it will be understood by those skilled in the art that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
The present invention relates to vertical sumps which have a top mounted switch for controlling the operation of the pump. ~his switch is connected to a float mechanism to turn the pump on and off, based on certain fluid levels. In particular the present invention is directed to a unique method of adapting a top mount switch and a motor top plate having an aperture for communicating with this switch, in a manner whereby the resulting combination satisfies the minimum CSA standards for this type of unit. This is accomplished through the use of a gasket and baffle member which cooperate with the top plate and the switch to provide a water passageway, directing water which enters the switch outwardly away from the aperture of the top motor plate.
A top mount switch commonly available in the United States for sump pumps is manufactured by Crouse-Hinds ~trademark) by the Arrow Hart Division. It is referred to as a sump pump switch catalogue 84594AM and has a very definite two position mechanism with a snap action between these two positions. The action of this switch is less sensitive then the previously used microswitches on sump pumps. Therefore, it is desirable to combine this known sump pump switch with the motors presently used in Canada and the Vnited States. Motors of the type having an aperture in the top motor plate for receiving a top mount switch are manufactured by Canadian General ~lectric Type XH
Model 4J589JS or equivalent Emmerson Model S63NXGED or e~uivalent as well as others. However, the switch and the motor top plate are not immediately compatible and an effective way to marry these two components is required.
The present invention provides a very simple solution to the problem of combining this known sump pump switch and others of a similar design and shape with the normally used Canadian sump pump motors.
This type of pump must meet certain CSA standards and, since this is an indoor use pump, it must satisfy the standard for dripprooF enclosures. This is achieved by use of a gasket member positioned between the top motor plate and the switch, which cooperates with the switch to prevent water entering the communication port without requiring substantially continuous support of the gasket about the water entry point.
In a vertical pump according to an aspect of the invention a particular motor top plate switch and gasket are combined. The motor top plate has a top communication port for communicating with the switch which has a downwardly extending skirt having a lower planar perimeter surface for seating of the switch to said motor top plate. The switch has at least one aperture at least partially interior to the communication port through which water would enter with the switch seated on the motor top plate about the communication port. The gasket is disposed intermediate the top plate and the switch and has an area for sealingly engaging about the communication port and extending inwardly thereof in at least a selective region for extending beyond and closing the at least one aperture at the lower periphery thereof.
Means for maintaining the gasket in contact with said switch and about the at least one aperture in a manner -to prevent entry of water through the at least one aperture and into the communication port when the switch, the gasket and the means for maintaining are secured on the motor top plate are provided. This arrangement does not require substantially continuous support of the gasket about the water entry point.
Preferred embodiments of the invention are shown in the drawings wherein:
Figure 1 is a perspective view of a vertical sump pump including the top mounted switch;
Figure 2 is a partial top view with the switch mounted on the top plate of the motor;
Figure 3 is a partial exploded perspective view illustrating the structure of the switch gasket and aperture in the top motor plate;
Figure 4 is a perspective view of the gasket and the interior portion of the switch; and Figure 5 is a partial side view illustrating a cut away through the exterior portion of the switch along line 5-5 of Figure 4. - /
:
'~
The sump pump of Figure 1 generally shown as 2 includes a top mount motor 4 having a top motor mount plate 6, which supports switch 8. The motor drives an impeller located within the base 10 of the sump pump and the motor is shut on and off by the float 12. With this particular switch, the float is connected to the arm 14 of the switch by a rod, in contrast to the commonly used weights connected to a switch by a string or cable.
A switch of this type and shape is manufactured by Crouse-Hinds ttrademark), through their Arrow Hart Division under part number catalogue 84594AM and is designed as a sump pump switch. This type of switch has gained acceptance in the United States and is designed to be accepted by various motor top plates. In this regard, the switch is provided with two circular apertures ll for mounting of the switch to the motor top plate, as well as two elongate s]ots 15 which can also be used to allow the switch to be adapted for other types motor top plates. Unfortunately, this switch is not compatible with all motor top plates and is not compatible with the motor top plates normally manufactured by Canadian General Electric or Emmerson for this type of pump. Furthermore, difficulties arise in that the Canadian Standards Association must approve a sump pump when equipped with this type of switch and, although both the motor of the pump and the switch are CSA approved, the resulting combination, if combined in the normal manner, will not satisfy the requirements for this type of de~ice, namely, a dripproof enclosure as stated in CSA Standards C22.2 no. 108, 1975 - Liyuid Pumps. The motor housin~ is considered a special purpose enclosures 2 as defined ir, CSA
~ t~
Standards C22.2 no. 99 - 1976, Section 6.3.2, which requires that IlThe component shall have the tops and sides exposed to a spray simulating a rainfall for one hour at the rate of 1 inch plus or minus half an inch per hour at an angle up to 15 degrees from the vertical. Water shall not come into contact with the enclosed electrical equipment during the test."
This switch has a number oE water entry points directly below the lever 14, as shown in Figure 4, where these water entry points are labelled as 21 and 22. These water entry points are inherent to the switch and are a result of the method of assembling of the switch, and if the switch had to be redesigned to comply with this Standard, the benefits of using a switch that is readily available from the shelf would be lost. Furthermore, when this switch is combined with the motor top plate of a Canadian General Electric motor for use in a sump pump, the elongate slots 15 overhang the opening in the motor top plate and these must be sealed to satisfy the CSA requirements.
By providing a combination, as shown in Figure 3, the motor top plate 6 with the opening 7 to the interior of the motor is effectively combined with the switch 8 to provide a device which meets the CSA requirements through the use of a gasket member 30. This gasket member has a deformable tab 32 which is bent at an angle to the normal plane of the gasket for insertion within the recessed area of the switch. This deiormable tab or baffle is positioned within the switch, such that water that enters through the water entry points 21 and 22 does not enter the interior of the motor through opening 7. The particular method of redirecting this water to the exterior of the motor will be explained in relation to Figures 3, 4 and 5.
As can be seen in Figure 3, the gasket 30 has a straight back portion 33, generally perpendicular side edges 34 and 35, having a front edge portion 36, having a straight segment 37 at an obtuse angle to the edge 35 and a curved segment 39. A cut out interior portion 40 is provided, such that the wires from the motor can be connected to the switch. This interior cut out portion provides a fairly wide area at the side edges 34 and 35, whereby the elongate slots 15 are covered when the switch and gasket motor plate are combined, such that water cannot pass through the slots 15a and 15b. It should also be note that the slots 15 are not entirely to the exterior of the aperture 7 and, therefore, the gasket 30 can be provided with an adhesive surface for securement to the lower flange 5 of the switch.
As shown in Figure 4, the switch has a downwardly e~tending flange 5 which defines a lower generally planar periphery for seating of the switch to the motor top plate.
This flange also defines a recessed interior switch portion generally shown as 57 which includes a generally rectangular deep recessed area 54, which adjoins a smaller rectangular recess 52 along one side of the deep recessed area. The water entry points 21 and 22 are located within the rectangular recess area 52 and, if the switch is mounted without the gasket 30 to a motor top plate, the water would drip down permanent baffle 50 and into the electrical motor through aperture 7 in the top plate. To overcome this, the gasket 3Q is provided with the de~orrnable tab or baffle 320 The gasket is preferably made of a closed cell neoprene material with a Mylar ltrademark) layer carrying an adhesive, such that the upper surface of gasket 30 may be secured to the planar portion of flange 5. In this way, the gasket is brought into sealing contact about the elongate slots 15a and 15b and water will not pass through these areas into the motor enclosure. The tab 32 is deformed, as shown in Figure 5, and is forced upwardly within the small rectangular recess and partially within the deep recess area 54. The tab is designed to go to the exterior of baffle 50 and extend between the baffle and the side wall 56 and the wall 58, which partially define the recessed areas. In this manner, the deformable tab forms a barrier such that the rectangular recess 52 is isolated from the interior portion of the switch.
The dashed line shown as 60 in Figure 4 represents the location of the straight edge 37 oE the gasket and the curved edge 39, when assembled to the switch member. ~hus, the gasket member as shown is not designed to go to the exterior of the flange immediately below the switch 14, but is actually within the periphery of the flange to form the baffle and lip arrangement as generally shown in Figure 5.
The tab 32 is deformed from the normal plane of the gasket and cooperates with the lower portion of the gasket adjacent the tab to form a lip, whereby water which enters through entry points 21 and 22 either falls directly through the rectangular recess 52 or contacts the baffle or tab 32 and flows down along it to the lip portion 31 of the gasket with the water moving outwardly to the periphery of the motor casing. In this way, a conduit is effectively provided such that, even if water enters through the water entry points, it does not flow within the switch to the internal electrical components of the motor.
Such a system sati~fies the CSA standards for dripproof enclosures and provides a simple solution for adapting this available switch for sump pumps to motor plates of the type produced by Canadian General Electric.
This particular solution, of having a deformable tab 32 which forms a baffle and cooperates with the portion of the gasket immediately below the tab to provide a lip, whereby the tab and lip effectively provide a conduit or passageway for directing water which enters through the top portion of the switch outwardly beyond the motor casing, is a unique system where water is allowed to enter within the switch, but is controlled and directed such that it does not enter the area of the switch immediately above the electrical components of the motor. It is clear that this system would function in a similar manner if, the deformable tab 32 was replaced with a baffle member for insertion between the permanent baffle 50 of the switch and the walls 5S and 58, with this baffle cooperating with the portion gasket immediately below to effectively provide this conduit for directing water to the exterior of the motor casing~
This system provides a very economical manner for effectively combining the available switch with commonly used motor top plates. Furthermore, the gasket serves to seal any other apertures within the flange 5 of the switch, due to the cooperation of the gasket material and in some cases the adhesive substance which is may be carrled by the gasket. Jt should be noted that the adhesive is preferred as the slotted areas are not directly above a support on the motor top plate andr therefore, one cannot merely rely on the compression of the gasket. However, where neoprene is used, this material is readily deformable and often mounting pressure is sufficient to maintain this sealing cooperation without the need for an adhesive.
Motors for use in this system are not limited by the specific reference to the models manufactured by Emmerson or Canadian General Electric and are only examples of existing models which can be used with this system. Other Canadian, United States or other manfacturers of motors may also be able to utilize this system.
Although preferred embodiments of the invention have been described herein in detail, it will be understood by those skilled in the art that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
Claims (16)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A gasket for use with a switch having at least one water entry point interior to the periphery of said switch and at least partially interior to a top communication port of a motor to which said gasket and switch are to be secured, said gasket being adapted to cooperate with such switch without requiring substantially continuous support of said gasket about the water entry point to prevent water passing through said water entry point and through such top communication port.
2. A gasket as claimed in claim 1, said gasket being adapted to cooperate with such switch by providing an interior tab positionable at an angle out of the plane of the gasket, said tab being deformable for insertion within the interior of such switch in a position to isolate said at least one water entry point and direct water outwardly beyond such communication port.
3. A gasket as claimed in claim 1 wherein said gasket is adapted by providing a pressure sensitive adhesive on one surface of said gasket for contact with the lower periphery of such switch and about such at least one water entry point.
4. A gasket as claimed in claim 3 wherein at least two water entry points in the form of elongate apertures require sealing and said gasket has two wide areas generally to opposite sides of said gasket for closing such two elongate apertures of said switch which would otherwise permit entry of water into such communication port.
5. A gasket as claimed in claim 1, 2 or 3 wherein said gasket is made of closed cell neoprene.
6. A gasket as claimed in claim 3 or 4 wherein said gasket is made of closed cell neoplene and said adhesive is separated from the neoprene by a mylar carrier.
7. In a vertical pump, a motor top plate having a top communication port for communicating with a switch, a switch with a downwardly extending skirt having a lower planar perimeter surface for seating of said switch to said motor top plate, said switch having at least one aperture at least partially interior to said communication port through which water would enter with said switch seated on said motor top plate about said communication port, a gasket disposed intermediate said top plate and said switch and having an area for sealingly engaging about said communication port and extending inwardly thereof in at least a selective region for extending beyond and closing said at least one aperture at the lower periphery thereof, and means for maintaining said gasket in contact with said switch and about said at least one aperture in a manner to prevent entry of water through said at least one aperture and into said communication port when said switch, said gasket and said means for maintaining are secured on said motor top plate without requiring substantially continuous support of said gasket about said water entry point.
8. In a vertical pump as claimed in claim 7 wherein said means for maintaining said gasket is a pressure sensitive adhesive applied to the surface of said gasket and in contact with said lower generally planar surface of said switch.
9. In a vertical pump as claimed in claim 8 wherein said switch has at least two elongate apertures disposed inwardly of the periphery of said skirt and within said lower generally planar surface, said elongate apertures at least partially overhanging said communication port, said gasket and said means for maintaining contact providing a seal about said elongate apertures without requiring compression of said gasket about said apertures.
10. A gasket for use with a switch having at least one water entry point through which water would pass if used with a motor plate having a communication port of a size such that said least one aperture is at least partially interior to such communication port, said gasket having an area for sealingly engaging at least about a substantial portion of the boarder of such communication port and extending inwardly a sufficient extent to extend beyond and seal such at least one aperture, and means for cooperating with said gasket and such switch to prevent entry of water through said at least one aperture and into such communication port when said switch is mounted on such motor top plate without requiring substantially continuous support of said gasket about all areas to be sealed.
11. A gasket as claimed in claim 10 wherein said means for cooperating with said gasket is a pressure sensitive adhesive applied to the surface of said gasket for contact with such switch about said at least one aperture.
12. A gasket as claimed in claim 11 wherein at least two apertures require sealing and said gasket has two wide areas generally to opposite sides of the gasket for closing two elongate apertures of such switch which would otherwise permit entry of water into such communication port, and said gasket is made of closed cell neoprene.
13. A vertical sump pump having a motor and a motor casing, said casing having a top plate with a communication port, a switch for controlling operation of said motor mounted on said top plate and communicating with said port, said switch having a downwardly extending skirt with a generally planar lower surface for seating of said switch to said top plate about said communication port, at least one water entry point interior to the periphery of said switch and at least partially interior to said commmunication port, and a gasket between said motor top plate and said switch of a size to cover said at least one water entry point, said gasket being adapted to cooperate with said switch to prevent water passing through said water entry point and into said motor without requiring a continuous pressure contact of said gasket about said water entry point.
14. A vertical sump pump as claimed in claim 13 wherein said gasket is made of closed cell neoprene.
15. A vertical sump pump as claimed in claim 14 wherein said gasket is adapted by providing a mylar layer over one surface of said closed cell neoprene and an adhesive layer for securing said gasket to said skirt.
16. A vertical sump pump as claimed in claim 13, 14 or 15 wherein said switch is made by Crouse-Hinds under product number 84594AM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000401497A CA1184228A (en) | 1982-04-22 | 1982-04-22 | Sealing arrangement for vertical top mounted pump switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000401497A CA1184228A (en) | 1982-04-22 | 1982-04-22 | Sealing arrangement for vertical top mounted pump switches |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000472811A Division CA1198933A (en) | 1985-01-24 | 1985-01-24 | Sealing arrangement for vertical top mounted pump switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1184228A true CA1184228A (en) | 1985-03-19 |
Family
ID=4122635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000401497A Expired CA1184228A (en) | 1982-04-22 | 1982-04-22 | Sealing arrangement for vertical top mounted pump switches |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1184228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131280A (en) * | 2018-02-01 | 2018-06-08 | 苏州优德通力科技有限公司 | A kind of column sewage pump with anticollision switch |
-
1982
- 1982-04-22 CA CA000401497A patent/CA1184228A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131280A (en) * | 2018-02-01 | 2018-06-08 | 苏州优德通力科技有限公司 | A kind of column sewage pump with anticollision switch |
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