Abstract: An electrical switch construction and method of making the same are provided, the switch construction having a support carrying a pair of spaced apart first and second fixed contacts and a movable switch blade unit carrying a contact unit for being disposed in contact with the first fixed contact and out of contact with the second fixed contact when the switch blade unit is in a first position thereof and for being disposed in contact with the second fixed contact and out of contact with the first fixed contact when the switch blade unit is in a second position thereof.

Abstract: An electrical switch construction and method of making the same are provided, the switch construction having a support carrying a pair of spaced apart first and second fixed contacts and a movable switch blade unit carrying a contact unit for being disposed in contact with the first fixed contact and out of contact with the second fixed contact when the switch blade unit is in a first position thereof and for being disposed in contact with the second fixed contact and out of contact with the first fixed contact when the switch blade unit is in a second position thereof.

Abstract: An electrical switch construction and method of making the same are provided, the switch construction having a support carrying a pair of spaced apart first and second fixed contacts and a movable switch blade unit carrying a contact unit for being disposed in contact with the first fixed contact and out of contact with the second fixed contact when the switch blade unit is in a first position thereof and for being disposed in contact with the second fixed contact and out of contact with the first fixed contact when the switch blade unit is in a second position thereof.

Abstract: A combination of a control arrangement and a protective shield, the protective shield and methods of making the same are provided, the combination comprising a control arrangement having a housing unit provided with certain external electrical parts and a one-piece protective shield carried by the housing unit and having a section thereof covering the certain external electrical parts. The section of the protective shield is movable relative to the remainder of the shield between a first position thereof that covers the certain external electrical parts and a second position thereof that uncovers the certain external electrical parts.

Abstract: A combination of a control arrangement and a protective shield, the protective shield and methods of making the same are provided, the combination comprising a control arrangement having a housing unit provided with certain external electrical parts and a one-piece protective shield carried by the housing unit and having a section thereof covering the certain external electrical parts. The section of the protective shield is movable relative to the remainder of the shield between a first position thereof that covers the certain external electrical parts and a second position thereof that uncovers the certain external electrical parts.

Abstract: A switch construction having a support carrying a pair of spaced apart first and second fixed contacts and a movable switch blade unit carrying a contact unit for being disposed in contact with the first fixed contact and out of contact with the second fixed contact when the switch blade unit is in a first position thereof and for being disposed in contact with the second fixed contact and out of contact with the first fixed contact when the switch blade unit is in a second position thereof.

Abstract: A combination of a control arrangement and a protective shield, the protective shield and methods of making the same are provided, the combination comprising a control arrangement having a housing unit provided with certain external electrical parts and a one-piece protective shield carried by the housing unit and having a section thereof covering the certain external electrical parts. The section of the protective shield is movable relative to the remainder of the shield between a first position thereof that covers the certain external electrical parts and a second position thereof that uncovers the certain external electrical parts.

Abstract: An elongated bimetal member has a transverse curvature opposing temperature warp and a longitudinal curvature aiding temperature warp. The transverse curvature maintains the member straight in a longitudinal direction until the sum of the longitudinal temperature warp forces and the bias of the longitudinal curvature exceed the retaining forces of the transverse curvature.

Abstract: An electrical circuit for a heating system has a plurality of electrical resistance heating elements and a blower all controlled by a plurality of electro-thermally actuated relays. The circuit is arranged so that the heating elements are sequentially energized and de-energized and so that the blower is maintained in operation at all times that any one of the heating elements is energized. A thermostat controls the operation of the relays, the second and the last of which each having switches connected in series circuits with the actuator of the first relay and in parallel with the thermostat so as to maintain blower operation, which is controlled by the first relay, when the thermostat opens.

Abstract: An electrical sequencing relay has an elongated bimetal member with a transverse curvature opposing temperature warp and maintaining the member straight in a longitudinal direction until longitudinal temperature warp forces exceeds the retaining forces of the transverse curvature. A slidable insulative operator is engaged by a free end of the bimetal member to operate an electrical switch when the bimetal member abruptly changes its longitudinal curvature.