Drain plug sensor for watercraft

Details Drain plug sensor for watercraft Drain plug sensor for watercraft

1998-07-15

2000-03-14

Noori, Max

Measuring and testing

With fluid pressure

Clamp, plug, or sealing feature

738659, G01M 304

Patent

active

060357029

ABSTRACT:
A drain plug sensor for determining whether a drain plug is inserted into a drain hole of a watercraft is provided. In a preferred embodiment, a reed switch for sensing a magnetic field is threadably mated with a receiver at one end thereof. The receiver and reed switch are emplaced into the drain hole. The drain plug, which is capable of being inserted into another end of the receiver, is formed together with a samarium cobalt magnet such that a magnetic field is created and emanated therefrom. In this manner, whenever the drain plug is inserted into the receiver, the reed switch detects the presence of the magnetic field. Conversely, whenever the drain plug is not inserted into the drain hole, no magnetic field is detected. Regardless of whether the drain plug is inserted into the drain hole, an indication is supplied to a user to alert the user as to whether the drain hole is operational.

REFERENCES:
patent: 3869391 (1975-03-01), Kramer
patent: 4409694 (1983-10-01), Barrett, Sr. et al.
patent: 4937559 (1990-06-01), Meacham et al.
patent: 5162793 (1992-11-01), Plost et al.

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