Abstract: Disclosed is an improved switch particularly adapted to be used as a coaxial cable switch for cable television systems because of its superior isolation of the signal inputs. The switch comprises an electrically insulating body, first, second and third terminals located on the body in spaced relationship, a movably mounted contact, which is movable along a predetermined path to form alternative conductive paths between the first terminal and either of the second or third terminals, and a partition means between said terminals and located adjacent the path of the contact to form a barrier to radiated signals from whichever of the second and third terminals that is not in contact with the movable contact. Additionally, terminating means for the unused terminal and/or shielding means to further isolate the unused terminal from the used terminal can be provided.

Abstract: A heavy duty push-button switch for the direct closing and opening of a high-current electrical circuit, such as the starter motor circuit for an internal combustion engine, comprising a casing containing at least two contact points engageable by a contactor disk mounted on a movable carriage member. The contactor disk is freely rotatable on the carriage member when the contactor disk is in transit between the contact points and a backstop. The contact points are preferably made of a silver alloy. Moreover, at least the surface portion of the contactor disk, presented to the contact points, is made of a silver alloy. The transfer of silver is equalized in both directions between the disk and the contact points. The switch preferably includes first spring means for biasing the contactor disk against the backstop.

Abstract: An electrical push-button switch in which the push button has a shank extending through a passage in the switch housing for engaging an electrical contact set. The passage through which the shank extends has a series of notches around the periphery for receiving one end of a pair of springs, the other end of each spring is attached to the shank. The springs have an N-shaped configuration with an extension at one end of the N. A pair of complimentary stationary portions of the switch housing extend in the path of and engage the extended portions of the springs after the push button is depressed. The initial depression of the push button causes the shank to move against the tension of the springs until a changeover point is reached, thereafter the push button movement is assisted by the springs for a further period of travel.

Abstract: Setting off device protected against atmospheric conditions by a recessed configuration inside a box applicable to any sort of equipment installed out-of-doors, more particularly, to telephone posts.

Abstract: An electrical protection unit having a plurality of main leads for respectively interconnecting a plurality of lines of an electrical power source to at least one electrically operated unit. At least one main lead has a device therein for opening the respective lead when the device is activated. The one main lead has one side of an electrical circuit interconnected thereto with the other side of the circuit being adapted to be interconnected to ground, the circuit having means for activating the device when the circuit is operatively interconnected to ground. Control means are provided for operatively interconnecting the circuit to ground.

Abstract: A multifinger contact device is produced by a series of deforming stations which compress the fingers into die cavities decreasing the width of the fingers while severing the adjacent fingers from one another, by deforming the adjacent fingers first in one direction and then in the other to decrease the formation of burrs. A subsequent forming station may be utilized to confine the entire periphery of the finger so as to form opposing longitudinal edges on adjacent fingers into noncontacting curved surfaces.

Abstract: Switch actuator having a base adapted to be mounted adjacent a switch and an elongated lever hingedly mounted on the base to make it possible to operate the switch by means other than the fingers.

Abstract: An electric circuit breaker includes thermal magnetic trip means for causing circuit interruption upon the occurrence of overload and minor short-circuit conditions, and also provides current limiting action under major short-circuit conditions by providing two pairs of engageable contacts, wherein one contact of each pair is movable to a circuit interrupting position by the circuit breaker operating mechanism and the other contact of each pair is magnetically attracted to a circuit interrupting position in response to short-circuit currents exceeding a predetermined magnitude.

Abstract: A push-button electric switch particularly adapted for use in printed circuit boards in which the base member has a plurality of terminals thereon and the actuating plunger may incorporate one or more bridging contact members which cooperate with the terminals to provide varying switching configurations, such as a single pole, single throw switch or double pole, double throw switch. The base is keyed to the actuating plunger and housing so that the housing and plunger may be assembled on the base in either one of two positions to provide with a single bridging contact in either one of two configurations with respect to the terminals connecting to the printed circuit board. The assembly provides for a recessed or hollow operating shaft of the plunger and an upstanding post on the base member for providing a mounting for an illumination light for key top illumination and permitting connection of the electric conductors from the illumination light through the base member to the printed circuit board.

Abstract: A push button of rubber or other resilient material for use with a push-button switch and comprising a hollow tilting wall of a mesa shape. The tilting wall of the resilient push button serving as an operating portion is constructed such that its thickness gradually decreases in going from an upper portion toward an intermediate portion and gradually increases in going from the intermediate portion to a lower portion. A curved surface curving inwardly toward the interior of the switch is formed to extend from the intermediate portion to the upper portion. When pressure is first applied to a key top, the curved surface is bent inwardly toward the lower portion of the switch; and when further pressure is applied to the key top, the surface area of the intermediate portion, which is bent inwardly, is increased until the pressure affects the upper portion of the tilting wall.

Abstract: An electric switch comprising a casing having a base with a first central terminal and second and third lateral terminals mounted thereon. A pushbutton is slidably mounted in an opening of the casing opposite the base, and a metal switching member is in sliding contact with the first terminal and is able to be brought into contact either with the second or the third terminal. A spring is mounted between the switching member and the pushbutton and urges the push-button into a normally released position and pushes the switching member into contact with the first terminal and second terminals. An actuator is integral with the push-button and when the latter is depressed, it tilts the switching member around the first terminal to move the switching member away from the second terminal and into contact with the third terminal.

Abstract: A hand-held pendant control for remotely mounted hoists has a human engineered control handle portion and a body portion within which various hoist switches are compactly mounted and actuated by a main actuator on the handle portion. The pendant handle is formed to conform to a hand of the hoist operator and has the main actuator, a single rocker member, recess mounted in the handle to be activated by the thumb of the hand holding the handle. The body portion of the pendant has a series of adjoining micro-switches mounted on a mounting plate which is retained between a pair of end formed slots within the body portion of the pendant. A shaft having a series of stepped sections is connected to the main actuator to be rotated thereby with the stepped portions actuating various of the micro-switches at various rotation positions.