Patent ID: 7442887
Filing Date: 2008-10-28
Classification: H01H

Abstract:
1. A rotary electrical switch comprising: an elongated member longitudinally extending along an axis and rotatable about the axis; a plurality of terminals including a first terminal, a second terminal, a third terminal, and a fourth terminal; a plurality of bus members including a first bus member electrically coupled to the first terminal, a second bus member electrically coupled to the second terminal, a third bus member electrically coupled to the third terminal, and a fourth bus member electrically coupled to the fourth terminal, the first bus member having a first portion located to include a first radial distance from the axis angularly extending about the axis a first degree amount from a first angular position through a first shared angular position and through a second shared angular position a first shared degree amount to a second angular position, the third bus member having a first portion located to include a second radial distance from the axis angularly extending about the axis a second degree amount from a third angular position through a third shared angular position and through a fourth shared angular position a second shared degree amount to a fourth angular position; the third bus member having a second portion located to include a third radial distance from the axis angularly extending about the axis a third degree amount from a fifth angular position to a sixth angular position, the third radial distance being greater than the second radial distance, the fourth bus member having a first portion located to include a fourth radial distance from the axis angularly extending about the axis a fourth degree amount from a seventh angular position through the third shared angular position and through the fourth shared angular position the second shared degree amount to an eighth angular position, the second bus member having a first portion located to include a fifth radial distance from the axis angularly extending about the axis a fifth degree amount from a ninth angular position through the first shared angular position and through the second shared angular position the first shared angular amount to a tenth angular position; the second bus member having a second portion located to include a sixth radial distance from the axis angularly extending about the axis a sixth degree amount from an eleventh angular position to a twelfth angular position, the sixth radial distance being greater than the fifth radial distance, the first bus member spaced from the second bus member and the third bus member, the third bus member spaced from the fourth bus member, and the second bus member spaced from the third bus member and the fourth bus member; and a first link member and a second link member, the first link member constrained to be movable in a first angular path about the axis and the second link member constrained to be movable in an angular path about the axis, in a first position, the first link member located to be electrically coupled with the second bus member through slidable contact and to be electrically separated from the first bus member, the third bus member, and the fourth bus member, in the first position, the second link member located to be electrically coupled with the third bus member through slidable contact and to be electrically separated with the first bus member, the second bus member, and the fourth bus member, thereby having the first terminal, the second terminal, the third terminal, and the fourth terminal being electrically separated from one another, in a second position, the first link member located to be electrically coupled with the first bus member through slidable contact, to be electrically coupled with the second bus member through slidable contact and to be electrically separated from the third bus member and the fourth bus member, in the second position, the second link member located to be electrically coupled with the third bus member through slidable contact, to be electrically coupled with the fourth bus member through slidable contact and to be electrically separated from the first bus member and the second bus member, thereby having the first terminal being electrically coupled with the second terminal, the third terminal, being electrically coupled with the fourth terminal, the first terminal being electrically separated from the third terminal, and the first terminal being electrically separated from the fourth terminal, and in a third position, the first link member located to be electrically coupled with the first bus member through slidable contact, to be electrically coupled with the second bus member through slidable contact, to be electrically coupled with the third bus member through slidable contact, and positioned without slidable contact with the fourth bus member, in the third position, the second link member located to be electrically coupled with the second bus member through slidable contact, to be electrically coupled with the third bus member through slidable contact, to be electrically coupled with the fourth bus member through slidable contact and positioned without slidable contact with the first bus member thereby having the first terminal, the second terminal, the third terminal, and the fourth terminal being electrically coupled with one another.