초록 ▼

Apparatus for indicating the absence of a drain plug in a boat drain when the boat is in a launch condition includes an electrically activated alarm connected in series with an electrical power source and a control circuit for connecting and disconnecting the alarm to the power source. The control c

Apparatus for indicating the absence of a drain plug in a boat drain when the boat is in a launch condition includes an electrically activated alarm connected in series with an electrical power source and a control circuit for connecting and disconnecting the alarm to the power source. The control circuit is contained in a housing mounted proximate the boat drain on an exterior portion of the boat and includes a normally open switch closable by immersion of contacts in water and operable in response to an actuator mounted on the drain plug so that, when the drain plug is properly seated in the boat drain, the switch will be in an open condition. Thus, if the drain plug is not properly seated in the drain when the boat is launched into the water, the control circuit will be completed by immersion of the contacts in the water and the alarm will be activated. However, if the drain plug is properly seated, the switch will be in an open condition and the alarm will not be activated, even when the boat is in a launch condition. The housing can be mounted proximate the drain in a position such that the contacts are immersed at a level at or below the level of the drain so that the alarm will be activated prior to the entry of water into the drain.

대표청구항 ▼

Apparatus for indicating the absence of a drain plug in a boat drain when the boat is in a launch condition comprising: an electrically activated alarm means; a power source electrically connected to said alarm means; and circuit means for controlling the electrical connection between said alarm mea

Apparatus for indicating the absence of a drain plug in a boat drain when the boat is in a launch condition comprising: an electrically activated alarm means; a power source electrically connected to said alarm means; and circuit means for controlling the electrical connection between said alarm means and said power source, said circuit means having a first normally open switching means electrically series connected with said alarm means and said power source, a second normally open switching means mountable on an exterior portion of the boat for closing in response to immersion thereof into water to close said first switching means and a third switching means for sensing the presence of the drain plug in the drain and for opening said first switching means in response to said sensing by said third switching means.