Rotary switch beater ejector

Claim 2

A switch for a food mixer comprising, a housing open on one side and having two pairs of facing walls and a bottom wall, a shelf along a wall of one pair and a stationary contact supported thereon having electrical terminals extending through the bottom wall, a plurality of parallel resilient conductors supported on the outer side of the other wall of said one pair and terminally stressed at one end to engage said contact under pressure, coaxial journals opening towards said conductors in the other pair of walls offset from said resilient conductors, and rotor means journalled in said journals and including circumferential cam tracks engaging and selectively holding a plurality of said switch conductors open under tension at any given time and said conductors holding said rotor means rotatably in place in said journals.

Claim 3

The switch defined in claim 1 in which said rotor is hollow and said mixer includes removable beaters, a shaft reciprocable in the full length of said rotor to engage and release said beaters, a speed control dial carried by said rotor and rotatively supporting said shaft for 360* rotatIon relative to said shaft.

Claim 4

The switch defined in claim 2, said mixer including a transmission block journalling said beaters, said housing including two diverging depending leg means supporting said rotor and shaft against lateral movement with respect to the block, at least one of said journals being bifurcated into two opposing parts engaging said rotor means and movable towards each other by said two leg means when moved towards each other to establish friction upon said rotor means.

Claim 5

A switch for a multi-speed household appliance comprising, a housing having a pair of facing walls, a rotor between the walls including axially spaced circumferential cam tracks with circumferentially staggered restricted recesses for individual selection, means for journalling the rotor at the ends of the walls over 180* of its circumference, means for supporting an elongated stationary switch contact along one of the walls, a plurality of elongated parallel resilient conductors supported intermediate their ends on the other of said walls with one end portion of each forming a detent to engage one of said recesses and terminating as a contact position to engage said switch contact, said end portion being stressed to normally engage said switch contact, some of said conductors being in open stressed engagement with said rotor at any given time to hold the rotor in said journalling means, the other ends of said conductors receiving separate electrical connections to an electrical circuit.

Claim 6

A switch for a multi-speed household appliance comprising, a housing having a pair of facing walls, a rotor between the walls including axially spaced circumferential cam tracks with circumferentially staggered restricted recesses for individual selection, means for journalling the rotor at the ends of the walls over 180* of its circumference, means for supporting an elongated stationary switch contact along one of the walls, a plurality of elongated parallel resilient conductors supported intermediate their ends on the other of said walls with one end portion of each forming a detent to engage one of said recesses and terminating as a contact position to engage said switch contact, said end portion being stressed to normally engage said switch contact, some of said conductors being in open stressed engagement with said rotor at any given time to hold the rotor in said journalling means, the other ends of said conductors receiving separate electrical connections to an electrical circuit.

Claim 7

The switch defined in claim 4 including means engaging said conductors intermediate their ends and securing them on the other side of said other wall.

Claim 8

The switch defined in claim 4 including means of the same material as said other wall engaging said conductors intermediate their ends to hold them in place on the outer face of said other wall, said conductors intermediate their ends being locally of different contour and embedded in said material integrated with the material of said other wall.

Claim 9

The switch defined in claim 4 including means interlocking said other wall and said supported intermediate portion, and means holding said resilient conductors in parallel relationship.

Claim 10

The switch defined in claim 4 in which the other end of said conductor has an opening receiving a bare wire therethrough and is reversely curved upon itself with the terminal end thereof resiliently engaging said conductor under pressure for locking the bare wire in place therebetween.

Claim 11

The switch defined in claim 4 in which said stationary contact is a U-shaped strip of contact material whose legs extend through the one wall as a wire terminal connector means and the bight portion is engaged by said conductors as a common contact.

Claim 12

A switch for a multi-speed household appliance comprising, a housing having a pair of facing walls, a rotor between the walls including axially spaced circumferential cam tracks with circumferentially staggered restricted recesses for individual selection, means for journalling the rotor at the ends of the walls over 180* of its circumference in which at least one journal comprises spaced bearing sections of a circle, means for supporting said bearing sections for frictionally tightening them against the end of said rotor, means for supporting an elongated stationary switch contact along one of the walls, a plurality of elongated parallel resilient conductors supported intermediate their ends on the other of said walls with one end portion of each forming a detent to engage one of said recesses and terminating as a contact in position to engage said switch contact, said end portion being stressed to normally engage said switch contact and hold the rotor in said journalling means, the other ends of said conductors receiving separate electrical connections to an electrical circuit.

Claim 13

A switch for a multi-speed household appliance comprising, a housing having a pair of facing walls, a rotor between the walls including axially spaced circumferential cam tracks with circumferentially staggered restricted recesses for individual selection, means for journalling the rotor at the ends of the walls over 180* of its circumference in which at least one journal comprises spaced bearing sections of a circle, means for supporting said bearing sections for frictionally tightening them against the end of said rotor, means for supporting an elongated stationary switch contact along one of the walls, a plurality of elongated parallel resilient conductors supported intermediate their ends on the other of said walls with one end portion of each forming a detent to engage one of said recesses and terminating as a contact in position to engage said switch contact, said end portion being stressed to normally engage said switch contact and hold the rotor in said journalling means, the other ends of said conductors receiving separate electrical connections to an electrical circuit.

Claim 14

A switch for a food mixer comprising, a housing having tWo pairs of facing walls, a shelf along a wall of one pair and a stationary contact supported thereon, a plurality of parallel resilient conductors supported on the other wall of said one pair and terminally stressed at one end to engage said contact under pressure, 180* coaxial journal notches in the other pair of walls facing and offset from said resilient conductors, and rotor means received radially in said notches to rest in said journals and having circumferential raised tracks selectively engaged by said conductors to hold a plurality of said switch conductors open at any given time under tension to hold said rotor means in said journals.

Claim 15

A switch for a food mixer comprising, a housing having tWo pairs of facing walls, a shelf along a wall of one pair and a stationary contact supported thereon, a plurality of parallel resilient conductors supported on the other wall of said one pair and terminally stressed at one end to engage said contact under pressure, 180* coaxial journal notches in the other pair of walls facing and offset from said resilient conductors, and rotor means received radially in said notches to rest in said journals and having circumferential raised tracks selectively engaged by said conductors to hold a plurality of said switch conductors open at any given time under tension to hold said rotor means in said journals.

Claim 16

A speed control switch for a food mixer defined in claim 11 in which said rotor means is hollow and said mixer includes removable beaters, a shaft extending through and reciprocable in said hollow of the rotor as supported in said journals to engage and release said beaters, speed control dial carried by said rotor for 360* and movement rotatively supporting said shaft.

Claim 17

In a food mixer power unit having a transmission block journalling drive sleeves that receive removable beaters in drive relationship, a housing including a handle supporting the power unit by a hollow pillar at one end and defining a circular opening above said drive sleeves, the combination of manual switch control means journalled in said circular opening, a switch in said pillar including a switch housing having a pair of facing walls, a rotor extending between the walls and having a plurality of axially spaced circumferential cam tracks collectively having circumferentially staggered restricted recesses, laterally open means for journalling the walls and the rotor with respect to each other at said rotor ends, said walls and rotor ends being supported concentrically with said circular opening at one of said rotor ends by said switch control means, a plurality of elongated parallel resilient conductors supported on said switch housing transversely to and in contact with the rotor to hold the rotor in said journalled relation with a portion of each conductor forming a detent to selectively engage said staggered recesses successively, said switch control means and rotor being concentrically hollow throughout their length, said journalling means at the other end of said rotor including leg means interconnecting the switch housing and said transmission block to support said rotor against rotation and lateral movement with respect to said drive sleeves, a beater ejector shaft means reciprocably mounted in said rotor and extending above said switch control means at one end and disposed coaxially at its other end with at least one of the drive sleeves to engage beaters present therein.

Claim 18

In a food mixer power unit having a transmission block journalling drive sleeves that receive removable beaters in drive relationship, a housing including a handle supporting the power unit by a hollow pillar at one end and defining a circular opening above said drive sleeves, the combination of manual switch control means journalled in said circular opening, a switch in said pillar including a switch housing having a pair of facing walls, a rotor extending between the walls and having a plurality of axially spaced circumferential cam tracks collectively having circumferentially staggered restricted recesses, laterally open means for journalling the walls and the rotor with respect to each other at said rotor ends, said walls and rotor ends being supported concentrically with said circular opening at one of said rotor ends by said switch control means, a plurality of elongated parallel resilient conductors supported on said switch housing transversely to and in contact with the rotor to hold the rotor in said journalled relation with a portion of each conductor forming a detent to selectively engage said staggered recesses successively, said switch control means and rotor being concentrically hollow throughout their length, said journalling means at the other end of said rotor including leg means interconnecting the switch housing and said transmission block to support said rotor against rotation and lateral movement with respect to said drive sleeves, a beater ejector shaft means reciprocably mounted in said rotor and extending above said switch control means at one end and disposed coaxially at its other end with at least one of the drive sleeves to engage beaters present therein.