Plastic pan float switch and mounting system assembly
View Patent ↗A float switch, housing, and clamping member assembly that is made from plastic and impervious to corrosion, with improvements over the prior art including a wide float switch body for enhanced water displacement that results in a more responsive operation, a housing configured to protect its float switch body from malfunction due to airborne debris, a clamping member configured to create a J-shaped slot between it and the housing when they are connected together over the upper edge of a support surface, such as a plastic condensate collection pan with a flange. Oversized thumbscrews facilitate and expedite installation. Strength-enhancing ribs are associated with the housing and clamping member. Connection between the housing and clamping member can also include a ratcheting configuration.
1. A float switch and clamping member assembly for use in association with a fluid collection container having a top edge to shut off a system providing fluid to the container once a pre-determined fluid depth has been reached, said assembly comprising:
a housing having a front portion with an interior space, an open bottom end, a rear wall, at least one air vent opening through said rear wall, and a threaded bore centrally through said top, said housing also having a rear portion with at least two upper connecting members;
at least one thumbscrew;
a clamping member configured for creating a substantially J-shaped slot between said rear portion of said housing and said clamping member when they are joined during use, said clamping member also having at least one threaded opening therethrough that is configured for engagement of said at least one thumbscrew, said clamping member further having an upper connection means engaging with said at least two upper connecting members of said housing;
at least two fasteners adapted for securely fixing said connection means of said clamping member and said at least two upper connecting members of said housing to one another;
a shaft with a threaded top portion secured within said threaded bore in said top surface of said housing, said shaft also having a bottom end with a stop;
a float switch body concentric with said shaft and positioned for free movement along said shaft;
fastening means securely attaching said shaft to said housing; and
lead wires connected between said float switch body and the system providing fluid to the collection container with which said assembly is associated, so that when the top edge of the container is positioned within said J-shaped slot between said clamping member and said housing, said at least two fasteners fixedly secure said upper connecting members of said housing to said connection means of said clamping member and said at least one thumbscrew is tightened in said at least one threaded opening through said clamping member, said float switch body is positioned to move freely along said shaft between said stop and said fastening means in response to rising and falling fluid levels in the attached container, and whereby when a pre-determined maximum depth of fluid accumulation is reached said float switch body shuts off the system to prevent fluid overflow in the container.
2. The assembly of claim 1 wherein said fastening means comprises at least one lock-nut.
3. The assembly of claim 1 wherein said stop is separable from said shaft.
4. The assembly of claim 1 wherein said shaft has a top opening, and further wherein said lead wires are extended through said top opening.
5. The assembly of claim 1 wherein the maximum vertical movement of said float switch body along said shaft is adjustable.
6. The assembly of claim 1 wherein said connection means of said clamping member comprises at least two threaded elongated projections, and said at least two upper connecting members of said housing comprise a rearward projection.
7. The assembly of claim 1 wherein said housing and said clamping member further comprise strength-enhancing ribs.
8. The assembly of claim 1 wherein said housing has a half-dodecagon configuration.
9. The assembly of claim 1 wherein said housing and said clamping members further comprise an additional fastening means with a ratcheting configuration.
10. The assembly of claim 9 wherein said ratcheting configuration comprises at least one tooth and at lease one complementary groove.
11. The assembly of claim 1 wherein said housing has a top surface which is at least partially angled.
12. The assembly of claim 1 wherein said at least two fasteners each comprise a nut configuration.
13. The assembly of claim 12 wherein said fasteners further comprise easily gripping projections.
14. The assembly of claim 1 wherein said clamping member further comprises a support tongue.