Abstract: A circuit breaker lock-out device is disclosed, the lock-out device including a U-shaped channel member with a plurality of closed slots paired opposite one another in the side walls of the channel. The device includes lock-out bars comprising a notched stem transversely aligned with the channel member to immobilize a circuit breaker switch in either the “OFF” or “ON” position as desired. The bars are “locked” in position with a padlock or closed-door padlockable bar, immobilizing the circuit breaker switch.

Abstract: A method and apparatus for warning boats in the proximity of a towing water craft that a water skier is down or the person being towed is in a vulnerable position via an electrically activated, high intensity signal visual to boats in the vicinity which is connected to the electrical system for energizing the craft and to a pressure sensitive speedometer including an inlet tube, the speedometer being responsive to fluid pressure in the tube created by movement of the craft through the water, and there being a pressure switch which is closed when the movement of the craft is below a predetermined value connected to energize the signal when the pressure switch is closed. The steps comprise measuring the speed of the craft through the water via the pressure conditions of the fluid in the inlet tube and visually warning boats in the vicinity by energizing the visual signal responsive to the speed of the craft being less than a predetermined value.

Abstract: In combination with a water craft (10) having an engine compartment (12), a blower (14) for purging the compartment of noxious vapors, an electrical system (16) for energizing the water craft, a manual blower switch (18), and a speedometer (20) including a tube (22) which provides fluid pressure thereto for sensing the speed of the water craft (10) through ambient water, an improvement comprising a normally closed pressure switch (24) connected to the tube (22). The pressure switch (24) is openable in response to fluid pressure in the tube (22) at speeds above a pre-determined speed of the water craft (10). Electrical connections (26, 28) are provided between the pressure switch (24), the electrical system (16) and the blower (14). The pressure switch (24) bypasses the manual blower switch (18) so that the blower (14) is operated pressure-responsively, irrespective of the manual blower switch (18) when the speed of the water craft (10) is below the predetermined speed, thereby enhancing boating safety.