US 4,874,911 AGranted

Electrical reversing switch

AssigneeEaton Corporation

InventorTimothy L. Parrish

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Abstract

A double pole, double throw rocking contactor switch is operable as a reversing switch by particularly configured stationary contacts at the corresponding ends of the respective poles. Stationary contacts are formed electrically common out of a single member having the stationary contact of one pole formed to be disposed below the rocking contactor and the stationary contact of the other pole formed to be disposed above its respective contactor. Accordingly, one contactor engages the upper surface of a stationary contact while the other end of the other contactor engages the under surface of the opposite stationary contact for a given stable position of the actuator, thereby causing the respective contactors to engage stationary contacts at respective opposite ends of the contactors, accomplishing the reversing function internally of the switch without special cross connect conductors, thereby permitting press-in wire terminations to be utilized. The stationary contacts are provided with serrations which cooperate with the leaf spring wire retainers to provide improved press-in wire terminations.

Claims8

Dependent claims

An electrical reversing switch having an insulating housing wherein a pair of switch poles are arranged side-by-side, each pole having a pair of spaced stationary contacts, a fulcrum contact disposed intermediate said stationary contacts, and a rocking contactor supported on said fulcrum contact pivotally movable in opposite directions to cause opposite ends thereof to engage one or the other of said pair of stationary contacts, and an actuator pivotally mounted in said housing having means resiliently engaging an upper surface of said contactor in each pole, said means traversing said upper surface of each said contactor across a plane of the respective fulcrum contact as said actuator is pivoted, said actuator assuming stable positions at either side of said fulcrum contacts wherein said means drives a respective contactor into engagement with a respective one or the other of said stationary contacts, characterized in that:

said stationary contacts in one pole are disposed below the respective contactor and stationary contacts in the other pole are disposed above the respective contactor, said contactor of one switch pole engaging a stationary contact of said one switch pole on one side of said fulcrum contact of said one switch pole, and said contactor of the other switch pole engaging a stationary contact of said other switch pole on an opposite side of said fulcrum contact of said other switch pole when said actuator assumes one of said stable positions.

Dependencies are inferred from the claim text.