Abstract: A push button safety switch. A pair of switch terminals are mounted within a housing which also carries a plunger for movement relative to the housing. The plunger is biased for movement along a path of travel by a compressed spring. A push button actuator has a knob for contact by user and a plunger actuator carried by the knob. The actuator also defines a stem portion to support a tether clip coupled to the boat operator. The boat motor ignition circuit is electrically connected to the switch terminals and the motor can be de-activated by either user contact with the knob or through movement of the plunger initiated by separation of the tether clip from the push button actuator.

Abstract: An electrical switch assembly comprises a first, domed, flexible contact member plus at least one second, flexible, finger-type contact member positioned under the first contact member in normally spaced relation thereto. Actuator means are provided for pressing the first, domed contact member into contact with the second contact member to actuate the switch assembly. In accordance with this invention the second, flexible, finger-type contact member defines an end portion which is bent to permit increased-area contact with the first contact member when the first contact member is pressed into contact with the second contact member. This also provides improved wiping action between the first and second contacts as the increased-area contact is made and broken for removal of carbon build-up and the like.

Abstract: An apparatus for continuously adjusting the corona discharge currrent of a pair of electrodes exposed to an atmosphere of gaseous impurities, particularly halogen. The device consists of a power supply to cause a corona current to flow in a pair of electrodes in series with a summing resistor. Any change in the gaseous impurities which causes a change in the corona current is sampled in the resistor, detected, delayed, amplified and fed back in proper phase to the control element of the power supply to cause the corona current to remain constant. During the finite delay time the change in corona current causes an audible alarm to sound until the corona current is restored to the new level of impurity concentration. The corrective action is continuous for any level of impurity concentration.

Abstract: A packaging arrangement for energy dissipating devices includes thermal elements adjacent first and second sides of the device, and a heat-flow modifier adjacent one of the thermal elements for regulating the flow of heat therefrom. A plurality of electrically conductive leads extend from the device to the exterior of the packaging arrangement. Portions of the electrically conductive leads extend between the thermal elements and are in thermal contact with at least one of the these elements. The leads are electrically isolated from the thermal elements and a seal is maintained between the leads and the elements. An outer casing surrounds the thermal elements, and the plurality of leads extend through the outer casing to provide for connecting the device to the environment. A seal is also maintained between the outer casing and the leads. The outer casing is preferably formed from premolded thermoplastic base and cap sections.

Abstract: A circuit breaker having positive contact indication. Upon the circuit breaker tripping, the operating mechanism components unlatch, moving the cradle, upper link and lower link upwards and opening the contacts. Upon the circuit breaker being manually opened, no operating mechanism components move except the upper link and lower link which causes the contacts to open. Upon the occurrence of locked contacts and the operating mechanism receiving a trip signal, the operating mechanism components unlatch but move only slightly since the contacts cannot open. A shuttle, pivotally mounted on the cradle, moves upward slightly to catch its tail on a flipper spring. The shuttle rotates slightly to meet a tab positioned on the handle arm and to block and opening movement of the operating handle.

Abstract: A device for monitoring a yarn reserve on a stationary yarn spool from which the yarn is being pulled off, including a feeler applied to the end face of the yarn package and coupled to a swinging switching arm which cooperates with a switch. The feeler can perform a movement along the external surface of the spool and bring the switching arm to the position in which the switch is actuated. A locking lever is provided in the device which can lock the switching arm in the end position.

Abstract: A pair of spring loaded cylinders each supporting an upwardly projecting post mounted in a drain. A strainer is attached to the drain with the posts porjecting upwards through holes in the strainer. A disposable insert, having a hooked material such as VELCRO sheet on its lower surface, is mounted on a distal end of the posts. Foot pressure on a cover plate mounted on a top surface of the insert forces the VELCRO to contact the strainer and remove all impinged hair and debris.

Abstract: A water saver outlet valve mechanism for a flush tank includes a latch for holding the valve open when pulled open by the flush handle. This latch is released by a float either at a water saving intermediate level, or when the tank is empty for a full flush, as selected by the user. A full flush is obtained by retracting an operator for the latch to an inoperative position at the water saving level, allowing the float to pass without releasing the latch. This retraction is done when the flush lever is pushed to start a flush. The float locks the latch in retracted position if the water level drops a predetermined amount before the flush lever is released.

Abstract: An improved commode with a removable receptacle is provided with a chair portion, front and rear legs, and horizontal braces extending between the front legs and the rear legs, respectively. The rear brace is adapted for mounting a hinged toilet seat thereto. A novel support structure connects the rear brace to the front brace. The support structure includes two substantially parallel flat bars each having a raised portion extending above the rear brace for supporting the underside of the toilet seat near the rear brace. The support structure also includes a contoured widened opening for retaining a pail between the raised supporting portion and the front brace.

Abstract: A switch element including a ribbon-type spring member having a plurality of interconnected inner and outer loops and stressed to cause the member to take a substantially dome-shaped configuration and the loops to store a predetermined amount of energy. The spring member is made of electrically conductive material, and adapted to coact with contacts to open and close a circuit and to define a snap-acting function for the element that may be used for monostable or bistable switch operation.

Abstract: A rotary coding switch is disclosed which comprises a rotor or a rotor and a coding disk provided with coding recesses for actuating the contacts. Each contact spring is provided with a boss cooperating with associated coding recesses which, in the open state of the contact spring, engages one of the associated coding recesses under pretension of the contact spring, and which is moved to the position corresponding to the closed state of the contact spring via the boss being contacted by the surface of the rotor or the coding disk remaining between the coding recesses.

Abstract: Apparatus in a trigger grip switch assembly for sequential actuation of first and second electrical switch banks. First and second actuating elements each have a base portion, a switch-actuating arm extending from the base portion, and a resilient pressure-transferring arm extending from the base portion at an acute angle to the respective switch-actuating arm. The respective base portions are mounted for pivotal movement relative to the respective first and second switches and for presenting the switch-actuating elements in respective proximity to the first and second switches for actuation thereof upon base portion pivoting movement and for presenting the pressure-transferring arms in mutually overlapping relation with a distal end portion of a first pressure-transferring arm in contact with a medial portion of a second pressure-transferring arm. The pressure-transferring arms form between them an angle at least slightly greater than 30 degrees to provide an over-centered stable relationship.

Abstract: The amount of liquid dielectric fuel in a tank is monitored with a capacitor including first and second electrodes immersed in the fuel. The fuel level determines the capacitance between the electrodes. Contaminants in the fuel are reflected as a shunt resistor for the capacitance between the electrodes. A periodic symmetrical triangle voltage is applied to the electrodes. The impedance between the electrodes responds to the voltage by deriving a composite current having a constant amplitude square wave component and a component that is a replica of the periodic voltage. The amplitude of the constant amplitude component is determined, in one embodiment, by sampling the amplitude of the composite current at the center of each square wave component to indicate the capacitance and the amount of fuel in the tank independently of effects of the shunt resistor on the electrodes.

Abstract: A vacuum toilet system for a vehicle (such as a boat) has numerous advantages. A single pump with valves on opposite sides of it may be used as both the vacuum source and for discharging sewage from a holding tank. Two sets of multiple heads may be selectively connected to two pumps for emergency purposes. The vacuum toilet includes a sealing element with an integral movable valve engaging element including polytetrylflouroethylene and synthetic rubber, and at the same durometer (55-65). The initial passageway provided by movement of the valve with respect to the seal is disposed directly above the center line of an orifice. An anti-siphon valve assembly has a simple construction of a housing with parallel legs and anti-siphon air passage in alignment with one of the legs. A spray nozzle extends from the other legs of the anti-siphon valve assembly. The toilet funnel/orifice is universally connected to conduits.

Abstract: A chlorine tablet holder designed to hyperchlorinate a localized wall or bottom area of a swimming pool. The chlorine tablet holder comprises a flexible non-porous backing material and a flexible porous front material which are permanently attached by means of vertical and horizontal seams. The chlorine tablets are inserted into pockets formed by the seams. The chlorine tablet holder is generally rectangular in shape and is suspended from the side of the pool by means of conventional suspending mechanisms inserted into the chlorine tablet holder's hanging supports.

Abstract: An improved rotary line switch provided with an upper cover, a lower cover with trapezoid blocks and mushroom blocks on the internal walls thereof, a contact strip held by the mushroom block at one end of the lower cover, an inverted U shaped catch-contact strip having a catch end and a contact end held by the mushroom block at the other end of the lower cover, a control consisting of a knob and a lower ratchet wheel and an upper ratchet wheel each having four teeth, and a screw having a journal for the control to fit on and used to fasten the upper and lower cover together. The switch is constructed in such way that the S shaped end of a contact strip engages with a tooth of the lower ratchet wheel while the catch end of the catch-contact strip engages with a tooth of the upper ratchet wheel and serves as a catch of the same, and that when the knob is turned 90 degrees the lower ratchet wheel will push the S shaped end of the contact strip to contact with the contact end of the catch-contact strip once.

Abstract: A remote control switch for posture adjustment of automotive mirrors comprises plural fixed contact groups each having a first to third fixed contacts formed on both sides of a substrate and plural pairs of moving contacts disposed corresponding to the fixed contact groups, respectively. Each of the moving contact pairs consists of two electrically-conductive rolling elements movable on the substrate while being so kept by slidable actuating members disposed correspondingly to each moving contact pair. Each of the actuating members are forced by a resilient member disposed correspondingly to the actuating member in a direction where each moving contact pair takes a first contact position in which it is put into contact with the first and second fixed contacts.

Abstract: Measuring signals whose frequencies stepwise vary with time are fed to a test port of a reflection signal separator through an input port. A through transmission path and short- and open-circuiting elements are selectively connected to the test port. The reflection signal separator has an output port to allow a reflection signal from the test port and transmission signal passed via the through transmission path to be stored in first to third memory circuits through first and second heterodyne receivers equipped with a level correction function. A calculation circuit allows output signals of the first and second heterodyne receivers when an object to be measured is connected to the test port to be calibrated with the use of memory contents of first, second and third memory means so that the output signals are displayed on a display device.

Abstract: A printed circuit board comprising a dielectric film substrate and a plurality of circuit patterns for a capacitor switch formed on said dielectric film substrate at a certain space from each other. Each of the circuit patterns comprises a switch electrode pair formed on one surface of the dielectric film substrate, a first fixed electrode connected to one of the switch electrode pair, a first lead pattern connected to the other of the switch electrode pair, a second fixed electrode formed on the other surface of the dielectric film substrate in such a manner as to be opposed to the first fixed electrode through the dielectric film substrate, said first and second fixed electrodes forming a fixed electrode pair, and a second lead pattern connected to the second fixed electrode.

Abstract: A key switch structure comprises a first insulating cover having on one surface thereof a first conductive layer and an anisotropically electrical conductive layer printed on the first conductive layer, a second insulating cover having one surface arranged at a side opposite to the anisotropically electrical conductive layer on the first cover member, and a second conductive layer sandwiched between the anisotropically electrical conductive layer and the second insulating cover. At least, one of the first and second insulating covers being flexible. A depression force is selectively introduced from the other surface side of the flexible cover through the anisotropically electrical conductive layer so as to form a conductive path between the first and second conductive layers.