Abstract: A key switch including: a support base; a key which is manually operable for being moved, with respect to the support base, between at least a first operating position and a second operating position spaced apart from each other, in order to establish or interrupt at least one electric connection; a leaf spring member operatively interposed between the support base and the key; wherein the first operating position is a stable operating position of the key in which the leaf spring member is deformed between the key and the support base so as to take a first curvilinear configuration.

Abstract: Provided is a sheet conveying apparatus provided with: a rocker switch; a plurality of connectors each connected to two terminals; an outer cover; and a housing portion, wherein the connector among the plurality of connectors which is positioned farthest from the center of the rocker switch in the parallel direction of the two terminals protrudes toward an end portion of the end surface of the rocker switch which is on the connector side, and wherein a wall portion of the housing portion is disposed in a position opposing an end portion on the opposite side from the end portion in the parallel direction and in a position closer, in the direction of insertion of the plurality of connectors into the two terminals, to the rocker switch than the end surfaces of the plurality of connectors on the opposite side from the side where the rocker switch is disposed.

Abstract: An electrical contact system includes a pair of static contacts, a rotatable member disposed between the static contacts and rotatable about a rotation axis between a first position and a second position, and a movable contact mounted on and rotated with the rotatable member. A pair of opposite ends of the movable contact are in electrical contact with the static contacts when the rotatable member is rotated to the first position. The ends of the movable contact are separated from the static contacts when the rotatable member is rotated to the second position. The movable contact has a Z-shape and is slidably mounted on the rotatable member. The movable contact slides under a pushing force from a first static contact of the static contacts toward a second static contact of the static contacts to be in electrical contact with the second static contact.

Abstract: A spring operation device and a method for assembling the same are disclosed. A switching device including the spring operation device is also disclosed. In the spring operation device disclosed in at least one embodiment of the present invention, by way of a smooth corrugated protuberance, the protuberance can push the operation mechanism of the spring operation device to rotate accurately and efficiently under the effect of a spring at the moment when the spring's energy storing process is completed, so as to accomplish the release of energy.

Abstract: A see-saw switch capable of closing the contacts at a high initial contact pressure. The switch includes a housing provided with a fixed contact, and a lever provided with a movable contact at one longitudinal end thereof. The lever is pivotally supported to the housing for pivotal movement about a pivot axis between a contact closing position and a contact opening position. A plunger is slidably supported to the housing for linear movement along an axial direction of the plunger, and has an actuator which is held in slidable contact with said lever for translating the linear movement of the plunger into the pivotal movement of the lever so that, when the plunger moves in a forward direction, the actuator causes the lever to pivot about the pivot axis into the closed position.

Abstract: A quick-break switch in which, for switching-over purposes under the spring force (1) of a switching element, the two individual wedge faces of a wedge surface are felt. In order to render the pressure point more perceptible, in particular when the switch is manually operated, the wedge faces are curved. These curves can also help to improve the switching behavior of the switch with respect to the switching process and contact-making.

Abstract: A push button style power switch using a switching button to control movement of a curved sheet to form an electric power on or off state, the power switch is comprised of a base, a power control portion, a switching button and a cover. Wherein the power control portion is provided with a first conducting piece, a second conducting piece and a curved sheet. The conducting pieces connect respectively with two connecting ends of a wire of a power line. The curved sheet is mounted on the first conducting piece. When the switching button is pushed down, it lowers a bottom control tip beneath it to render the tailing end having a small boss of the curved sheet to move down/raise and press/leave the second conducting piece to make electric connection/circuit breaking of the power line. Therefore, this is a power switch structure capable of fast switching.

Abstract: An electric switch comprises a housing which is provided therein with a receiving cell having in the bottom thereof two through holes. Located in the receiving cell are a first fixed conducting member and a second fixed conducting member which is pivoted with a movable conducting member capable of swiveling between the first and the second fixed conducting members. A switch member is pivoted with the housing and provided at the bottom thereof with a push rod for pushing the movable conducting member to be connected or disconnected with the first fixed conducting member, thereby resulting in the connection or the disconnection of electric circuit.

Abstract: A switching device for connections between electric circuits is provided, which comprises a toggle contact element oscillatably movable about a fulcrum, an operating push-button, and spring means interposed between the toggle element and the operating push-button and having a longitudinal axis substantially parallel to the fulcrum and susceptible of being elastically deformed by the operating push-button according to a side deflection relative to its own longitudinal axis.

Abstract: A snap switch having spring a spring energy store and wedge profile. In conventional switches, the wedge profile was attached to the end of the contact arm, which forms the moving switching element. Heating of the contact arm due to large, switched electrical currents results in heating of the wedge profile and thus to a possible retardation of the switching, which, in turn, contributes to an additional heating of the wedge profile. The wedge profile is positioned where a low heat effect is expected. Thus, the wedge profile is seated under pretension at the switching element, where the contact arm forms a single sheet metal part whose one end senses the wedge profile.

Abstract: An electric plug including a disabling mechanism to preclude unauthorized use of the plug. The disabling mechanism includes a key cylinder lock assembly including a cam member rotated in response to rotation of the key cylinder, a pair of conductive track strips extending from a cord inlet to a location proximate the prongs of the plug, an insulative block mounted for linear sliding movement within the hollow of the housing of the plug between open and closed positions, and a pair of conductive contact strips carried by the insulative block and each including a portion slidably engaging a respective track strip and a portion movable into electric contact with a contact portion of a respective prong in response to movement of the insulative block to a closed position in response to rotation of the key cylinder lock.

Abstract: A full double wall tank, primarily for underground fluid storage, which is simpler and more economical to construct than conventional full double wall tanks. An inner tank shell, preferably of steel, provides primary fluid containment and is the principal structural basis of the tank. An intermediate barrier layer is applied over the inner shell to define secondary containment space, and provides a base for application of a resin outer secondary containment tank shell which is preferably fiber-reinforced. Monitor sensor means is provided having access to the secondary containment space, preferably proximate the bottom of the tank. The barrier layer is preferably such as to provide a minimum of fluid-receiving secondary containment space for rapid and highly sensitive monitoring, and to provide cathodic protection for a steel inner tank shell.

Abstract: An electric switch, preferably with means of illumination, is of liquid-protected design and includes parts which can largely be assembled automatically. A switch housing (2) is substantially closed in the upper region and is provided with a bottom opening (11) in the lower region. A switching pin (5) of an operating element (6) passes through a small upper opening (4) into the housing and operates a contact bridge (18). The contact bridge (18) selectively connects a middle plug terminal (12) electrically with an outer plug terminal (25). An illumination unit (30) may be integrated into corresponding recesses in the housing. All parts can be fitted in a straight line into the housing through the corresponding openings (11, 4) during automatic assembly.

Abstract: An electric switch having a housing including a base plate, the switch comprising a push-button which is preferably movable in a linear direction with respect to the housing, a switching tappet movable by the push-button and swivellable relative to the switching tappet and a switching rocker rotatably mounted on the base plate, the rocker being swivellable to and fro in turns between two end positions via the push-button and the switching tappet and controlling a movable bridging contact, especially a snap-action spring.

Abstract: The disclosed pushbutton operated automotive air control unit incorporates a unique snap-action electrical switch in which the movable contactor has a combination of sliding and rocking movement. The contactor is rockably supported on a fulcrum member which is movably mounted on the slidable carriage. The fulcrum member includes a locating projection, loosely received in a slot formed in the contactor. A coil spring is interposed between the carriage and the fulcrum member for biasing the contactor toward a first fixed contact. There is also a second fixed contact having contactor rocking lugs for slidably engaging the contactor, as the carriage is moved between first and second positions. In the first position, the lugs engage a portion of the contactor which is on the remote side of the fulcrum member from the first fixed contact, whereby the contactor is rocked into electrical engagement with the first fixed contact.

Abstract: A switch mechanism having redundant spring mechanism for use in rocker type switches. The switch mechanism has a housing which has at least an opening on a top end and a pivot mechanism on two opposing sides thereof. A pair of electrical contacts is located in a bottom end of the housing and an electrically conductive armature establishes an electrical connection between the electrical contacts. A movable rocker extends through the opening in the top end of the housing and has at least first and second opposed sides which have a structure for engaging the pivot mechanism on the housing. A one-piece plunger assembly has at least one bottom end for contacting the armature and a top end rides in a recess in the rocker. At least two coil springs are located between the top end of the plunger assembly and a bottom of the recess. One of the springs is sufficient to cause the plunger assembly to move the armature when the rocker is moved from a first position to a second position.

Abstract: In a reversing switch comprising a substantially V-shaped swinging contact plate provided with a normally open movable contact and a normally closed movable contact, a pair of fixed contacts provided in opposed relationship to the normally open movable contact and the normally closed movable contact, an intermediate supporting member for supporting a normally open contact side of a central bent portion of the swinging contact plate, and a knob adapted to be swung and slid on the swinging contact plate; the improvement is characterized in that the swinging contact plate is formed of an elastic material, and that the knob is provided at its end portion with a pressing member adapted to elastically deform the swinging contact plate. With this arrangement, the swinging contact plate is elastically deformed by the pressing member in association with the swinging motion of the knob, thereby wiping off a bad conductor present between the movable contact and the fixed contact.

Abstract: A switch device having a casing, a central terminal and stationary contacts arranged on the bottom wall of the casing, at least one conductor plate swinging at the central terminal as a center for contacting or separating the central terminal with or from the stationary contact, at least one movable contact formed at the conductor plate for contacting with or separating from the stationary contact, and a driver for swinging the conductor plate by tilting at the tilting fulcrum as a center which comprises an edge formed at the upper end of the central terminal, guide grooves extending elevationally at both side walls of the casing oppositely through the central terminal and formed, projections formed at both side edges of the conductor plate to be inserted into the guide grooves, the lower surface of the conductor plate being placed on the edge of the central terminal. Thus, the switch device can be simply assembled with the conductor plates.