Abstract: A low resistance current interrupter for detecting the occurrence of an unsafe condition and terminating power to an electrical circuit. The current interrupter comprises two in-line connectors having a gap formed therebetween. An electrically conductive pin is disposed in the gap for movement between a first, extended position, wherein the pin bridges the gap to establish electrical contact between the connectors, to a second, retracted position wherein electrical contact is broken. The device further includes means for sensing the occurrence of an unsafe condition and generating a signal indicative thereof, and an electromechanical means such as a solenoid which, upon receiving said electrical signal, is activated and causes the pin to move to the second position.
Abstract: A tease-free switch includes a plurality of electrical terminals of planar configuration disposed in spaced apart relationship upon an electrically insulating base as well as a generally planar contact plate including at least two electrical contact regions thereupon. The plate is engaged by a push-button actuated stepping mechanism so as to be alternately rotated between a position where contact between particular of the terminals is alternately established and terminated. The switch is configured so that the contact plate is constantly biased into contact with the terminals and/or the insulating surface upon which they are disposed. In this manner partial activation of the switch will not alter the condition of the electrical contacts.
Abstract: A keyless marine access and engine control system. The system is caused to change from a dormant state to an enabled state when a sequence of actuation signals entered through a keypad matches data representing either one of two access sequences stored in the system's memory. When the system is in its enabled state, the system responds only to signals representing a keypad actuation exceeding a first predetermined time interval. These signals are used to crank, choke, and stop a marine vehicle engine. The secondary access sequence can be changed by a person who knows either the primary access sequence or the secondary access sequence, while the primary access sequence can be changed only by a person having knowledge of the present primary access sequence. In order to reprogram either access sequence, a programming button must be actuated for a predetermined time interval exceeding the first time interval. The system can be used with either a single or dual engine installation.
Abstract: A multifunction control system for a vehicle includes a plurality of switches, each switch adapted to control a plurality of vehicular functions. Each switch has associated therewith a display element for indicating which of the functions that switch is controlling. The system further includes a microprocessor based controller which mediates which designator each display element will exhibit as well as which vehicular function a given switch will control. The system is readily adapted to a menu-driven mode of operation, and the switches may be mounted upon the steering wheel of a vehicle.
Abstract: A fluid pressure actuator is disclosed of the type such as a hydraulic cylinder, having an arrangement for sensing the position of the piston and operating rod assembly at points within the cylinder. The sensing arrangement is disclosed as a magnetically biased reed switch which is installed within the cylinder pressure chamber so as to sense the proximity of the piston or a portion of the attached operating rod. Operating circuitry associated with each proximity switch is also disclosed which provides a delay feature preventing triggering of the associated circuitry upon momentary closing of the reed switch contacts due to mechanical vibrations or other causes.
Abstract: A snap action fluid pressure actuated switch, including a switch housing within which is mounted a metallic dome-shaped disc which is dimpled in its center by a predetermined pressure differential to provide a snap action, while being biased to eliminate the deformation and return the switch after the pressure differential declines. The disc is secured to a spool contact movably by the snap action of the disc into and out of electrical contact with either of a pair of contact plates to create an electrical connection between a terminal electrically connected to the metallic disc and either of a pair of terminals connected to a respective contact plate. The free end of the spool contact is piloted at its free end and adjustable fixed stops are provided to position the spool contact in the connected metallic disc at either end point of the snap action movement, while enabling adjustability in the end positions of the spool contact and the pressure conditions causing the snap action to occur.
Abstract: A control device includes a magnetically actuated responder and an actuator. The responder is fixed to a relatively stationary portion of an apparatus and the actuator is fixed to a portion of the apparatus which is movable relative to the fixed portion. The fixed portion includes a housing for constraining the second, movable portion to linear movement. The actuator is located so that its outer surface is recessed into the surface of the movable portion flush with the surface of the movable portion of the apparatus thus providing an actuator for the responder which does not interfere with the movement of the movable portion. An alternate embodiment contemplates the use of a plurality of flush-mounted actuators axially spaced along the movable member with each actuator occupying only a portion of the circumference of the movable portion.