Abstract: A switch assembly of the rotary and/or push-pull type is made up of a plurality of stacked switch section including rotary switch sections and/or push-pull switch sections, all actuated by a common central shaft. In the rotary sections, there are at least one pair of terminals, a rotary cam rotatable with the shaft, a substantially rigid cam follower contact arm biased against the rotary cam and movable, with rotation of the cam, between open and closed positions. The contact arm is hinged on and electrically connected with one of the pair of terminals. The other end of the contact arm has a dog-leg section and a resilient conductive leaf, favorably formed of beryllium-copper, on which a movable contact is mounted. The flexing of the leaf brings about wiping action of the movable contact when it closes onto a fixed contact connected with the other terminal. The push-pull switch sections have an axially movable carrier also including a flexible resilient leaf member on which movable contacts are mounted.

Abstract: A switching mechanism in a star-delta-switch with a rotatable and axially displaceable switch-shaft prevents rotation of the switch-shaft from the off- to the delta-connection position in the direction of rotation from the delta-connection to the off-position in one of the axial positions while axial displacement of the switch-shaft to another axial position enables the switch-shaft to be rotated from the off- to the delta-connection, rotation of the switch-shaft in the other axial position causing the switching mechanism to reset to the one axial position.

Abstract: A timer has a single knob which is normally used to set a desired timing cycle within a given range and also, when pulled out, to set a selected one of a plurality of ranges. When the knob is pulled out, projections formed on the control shaft engage a concentrically-mounted rotatable disc having at least one set of peripheral teeth. These teeth engage a flexible plastic detent formed in the front of the plastic housing of the timer. The rotatable disc is coupled to a reciprocating slider having conductive fingers which engage predetermined pairs of conductive contacts on a circuit board. As the disc rotates and the slider fingers touch different pairs of contacts, different circuit components are actuated thereby changing the range. In one variation of the timer, means are provided for changing the visible decimal point on the dial to correspond to the range selected.

Abstract: A quick dialing switching system for an adapter employed for testing a chaff-flare firing system used in military aircraft. The adapter has a base which carries a plurality of contacts for engaging the contacts of the chaff-flare firing system. The switching system comprises two rotary switches each operated by its own rotatable knob for sequentially dialing the contacts of the adapter base to allow the contacts of the firing system to be tested.

Abstract: A selector switch assembly includes modular switch units that are serially-arranged in a housing and are operated by a single rotatable control member that is biased to a first position by a biasing unit. A modular switch unit includes a housing that has an end wall and two opposite sidewalls that each have two recesses at opposite ends which receive planar blade portions of switches to define an enclosure. The control member includes a hollow tube that has a friction member which has cams on the periphery to actuate the switches and also has an opening for frictionally engaging a rotatable adjusting screw on the next modular switch unit. The modular units are sealed into a support and the hollow tube provides access to the adjusting screw outside the support.

Abstract: A rotary switch comprising a body supporting a shaft and a plurality of spaced apart stationary contacts located around the shaft. The shaft is supported for axial and rotary movement and carries a contact means for engaging the stationary contacts as the shaft is rotated to different angular positions. A stop fixedly supported by the body and a disc connected to the shaft and having two sets of teeth located in two different planes are provided for requiring the shaft to be moved axially and angularly in order to allow it to be rotated to the different angular positions for causing the contact means to engage the stationary contacts.

Abstract: A device for transformation of alternating current-voltage which includes a core, a primary winding subassembly and a secondary winding subassembly. One or both of the primary and secondary winding subassemblies consists of at least one pair of equal turn and approximately equal resistance windings wrapped co-directionally around the core, and each having an equal number of tapped sections. A special tandem switch selectively interconnects tapped sections within winding pairs to provide a desired output terminal winding array such that all sections connected through the switch are energized, and are in the current carrying path at all selected switch positions, with selectively seriesed and selectively paralleled portions of the switch-coupled winding pairs being selectively encircuited at each switch position.

Abstract: The switch of the invention is a double deck type rotary switch having a position deck for detecting a home position and means for determining each position of the switch relative to the home position. A switching deck, rotated together with the position deck, selectively applies operating voltage to a plurality of operative devices, such as sprinkling valves.The system incorporates a microprocessor to control a motor for driving the rotary switch to a commanded position. The position deck signals the microprocessor as the deck reaches the predetermined position and the processor provides a delay before applying voltage to the switching deck, insuring that good load contact is made, so that arcing is avoided. The switching deck makes its load contact a few degrees ahead of the position deck in order that the load contacts for the work voltage are in the center of their terminal spring clips before the microprocessor is signaled that the predetermined position has been attained.

Abstract: The present invention relates to a rotary switch which is an improved stator provided with a plurality of projections extending outwardly from its edges to confront the corresponding surfaces of an improved chassis or the like to which the stator is to be secured. The improved chassis is formed, in positions corresponding to the positions of the projections of the stator, with openings or cutout portions each having a claw which can be deformed or bent. By bending the claws toward the projections after inserting the projections into the openings in the chassis, the projections of the stator are firmly held between the chassis and the claws and rigidly secure the stator to the chassis.

Abstract: An improved shaft-operated rotary switch construction for printed circuitry applications is disclosed. The improved switch is a modular design incorporating a standardized rotor element accommodating the mounting of wiper contacts in different positions and different operational orientations. Also disclosed is an improved releasable clutch mechanism providing one mode of operation in which the rotors of different switch sections are coupled together for simultaneous rotation, and another mode in which they are rotatable independently, the operating mode being selected by axial movement of one section's operating shaft relative to that of the other.

Abstract: A switching device is provided which permits connection of two incompatibly wired electrical components. The electrical signal from each lead on the first electrical component is isolated on a particular switch assembly and re-routed along a selected path to a desired terminal, which then feeds the signal to a particular lead on the second electrical component. Each switch assembly operates independently of the other switch levels, thereby permitting any combination of electrical routes or paths to be selected and accommodating a great variety of wiring designs.

Abstract: First and second sets of fixed contacts are axially spaced from each other. A rotor disc is axially movable between the contact sets so that electrically conductive patterns formed on opposite sides of the rotor disc selectively engage with the first and second contacts sets respectively. A detent mechanism yieldably holds the rotor disc in engagement with the selected first or second contact set and yieldably holds the rotor disc in one of a plurality of rotational positions in which the pattern interconnects the contacts in the desired manner.

Abstract: A rotary switch for use with electrical circuits and including a housing having a cavity therein for receiving a rotatable disc. The housing supports a plurality of spaced apart electrical terminals each independently connected to an electric circuit and also supports a plurality of opposed resilient contacts selectively engagable with the electrical terminals. The rotor includes opposed planar surfaces, one of the surfaces parallel to and adjacent the resilient contacts, the rotor surface supporting a plurality of cams projecting from the surface and functional upon rotation of the rotor to force selected ones of the resilient contacts into engagement with the terminals to provide an electrical bridge between pairs of the electrical terminals. The rotary switch rotor can include cam members on both of its opposite surfaces and the housings are constructed such that they can be stacked.

Abstract: In multiple position rotary switch a pair of printed circuit boards are arranged adjacent opposite sides of a single brush bearing rotatable element. Brush blocks have a plurality of contacting extensions which may be selectively deleted in accordance with circuit design. The rotatable element includes an integral wheel having peripheral means in association with a detent in the housing for particularly positioning the wheel relative to the circuit boards for selectively connecting circuits thereon to establish desired switch connections.

Abstract: A multi-terminal connector element comprising a stack of alternately arranged conductor grids and spacer grids containing spaced parallel lines of spaced openings which collectively define spaced parallel passages, the axes of which are perpendicular to the planes of the grids, spaced parallel conductors on the opposite faces of the conductor grids continuously extending from edge to edge along the openings with portions extending into the openings, said conductor grids being arranged so that the conductors in adjacent conductor grids are at right angles to each other, wiper bearing elements adapted to be inserted into the passages, mounting wipers which extend radially therefrom and axially spaced therealong a distance corresponding to the distance between conductor grids, said wiper carrying elements being rotatable to move the wipers into engagement with the inwardly extending portions of the conductor elements and conductor elements within the wiper bearing elements connecting the wipers.

Abstract: An electrical switch having conductive contact elements each pivoted about a stationary middle contact block is disclosed. The contact elements are each formed as a triangular spring open at one apex and having a bearing the side thereof opposite the open apex for engaging its respective middle contact block. The other two sides of each spring, depending on the switch position, rest under spring tension against one or the other of stationary contact blocks arranged on either side of its respective middle contact block. The ends of these two sides adjacent the open apex are formed with hooks which are positioned with a minimum of friction in recesses and oblong openings in a rotatable actuating element, under spring tension, in such a way that the contact element serves to produce a snap action as the actuating element is rotated.

Abstract: A rotary wafer switch in which the switch housing is resilient and insulating so that the wafers can be snap-fitted into it and in which the rotatable contact-carriers are provided with apertures through which the contacts in the carriers can be removed if desired after the switch has been assembled.

Abstract: A rotary switch includes a stator, rotor and shaft for the rotor. The stator has a complex conductive matrix formed of criss-crossing conductive sections integrally joined together and integral with a central annular ring. The annular ring in turn has radially inwardly-extending switch sections. There is a non-conductive support member for the matrix, with the matrix and support member having respective and cooperating openings and projections for positioning the matrix on the support member. The rotor has a plurality of pockets with contact members positioned in at least one of the pockets and arranged for electrical contact with portions of said matrix.

Abstract: An attachment for a vehicle switch is provided in which a switch knob and decorative cover on the dashboard of a vehicle can be removed and replaced with a new decorative cover and knob incorporating a switch. This allows a separate electrical switch to be actuated simultaneously with the vehicle switch so that, for instance, actuation of the windshield wipers switch will simultaneously turn on the headlights of the vehicle.

Abstract: A control device having a support and a first selector member rotatably carried by the support. A second selector member is rotatably carried by the support and is axially movable relative to the support and the first selector member. The selector members are coupled together in a manner to cause the first selector member to rotate in unison with the second selector member when the second selector member is rotated. A pair of spaced spring members are disposed between and respectively engage the selector members to tend to maintain the second selector member axially away from the first selector member. The first selector member has a cylindrical part extending therefrom and the second selector member has a C-shaped shaft rotatably disposed against the cylindrical part of the first selector member.

Abstract: A control for navigation receivers, radio compasses, radio, and aircraft telephony, transponders, and the like, comprising at least one control plate means arranged in series and spaced apart from each other behind a front plate, and sprocket wheel means having associated stop wheels for controlling frequencies and other suitable operational functions, respectively, connected with each other by coupling members and rotary knobs. Yieldable control contacts are mounted on the sprocket wheels which cooperate with rest controls mounted on a printed circuit and are operatively connected with the control plate means.

Abstract: A helical rotary switch having a helical coil formed of an insulating band like plate, a plurality of contact segments attached to said helical coil, a shaft for said helical coil rotatably supported by a pair of panels, a supporting member supported by said panels and supporting said helical coil between said pair of panels, and a sliding member with contact members engageable with said helical coil and said contact segments. The sliding member is mounted on said shaft such that when the shaft is rotated, said contact members of said sliding member successively contact the plurality of contact segments attached to said helical coil.