Methods and apparatus for mounting a bimetal coil in a thermostat
AssigneeEmerson Electric Co.
InventorsWilliam D. Rhodes, Bartholomew L. Toth
Life of this patent
Estimating the term…
Abstract
An apparatus is described for mounting a bimetal coil in a thermostat having an anticipator operable via an anticipator circuit. The apparatus includes an insulating member configured to insulate the coil from the anticipator circuit. The apparatus also includes a conductive shaft configured for mounting the coil and anticipator thereon. The insulating member is further configured for mounting between the coil and the shaft. This apparatus allows an inner end of a bi-metal coil to be secured easily in a thermostat, thus eliminating a need for more expensive mounting methods and costly insulating parts. The apparatus also simplifies calibration while reducing costs of assembly and materials.
Claims21
A thermostat comprising a base;
- a conductive shaft extending from the base;
- an anticipator circuit mounted on, and electrically connected to, the conductive shaft;
- an electrically insulative member on the conductive shaft between the base and the anticipator circuit;
- and a temperature-responsive coil on the electrically insulative member electrically isolated from the conductive shaft and anticipator circuit, carrying a conductive switch member.
A thermostat comprising a base;
- a conductive shaft extending from the base;
- an anticipator circuit mounted on, and electrically connected to, the conductive shaft;
- an electrically insulative member on the conductive shaft between the base and the anticipator circuit;
- and a temperature-responsive coil on the electrically insulative member electrically isolated from the conductive shaft and anticipator circuit, carrying a conductive switch member;
- the insulative member having a bore therethrough configured to engage the shaft and resist rotation.
A thermostat comprising a base;
- a conductive shaft extending from the base;
- an anticipator circuit mounted on, and electrically connected to, the conductive shaft;
- an electrically insulative member on the conductive shaft between the base and the anticipator circuit;
- and a temperature-responsive coil on the electrically insulative member electrically isolated from the conductive shaft and anticipator circuit, carrying a conductive switch member;
- the insulative member having a bore therethrough configured to engage the shaft and resist rotation, and having an external surface adapted to engage the end of the coil and resist rotation of the coil, a flange adjacent one end of the insulative member, and a resilient tab having a barb for engaging and retaining the coil thereon.
A thermostat comprising a base;
- a conductive shaft extending from the base;
- an anticipator circuit mounted on, and electrically connected to, the conductive shaft;
- an electrically insulative member on the conductive shaft between the base and the anticipator circuit;
- and a temperature-responsive coil on the electrically insulative member electrically isolated from the conductive shaft and anticipator circuit, carrying a conductive switch member;
- the insulative member having a bore therethrough configured to engage the shaft and resist rotation, and having an external surface adapted to engage the end of the coil and resist rotation of the coil, a flange adjacent one end of the insulative member, and a resilient tab having a barb for engaging and retaining the coil thereon.
A method of mounting a bi-metal coil in a thermostat having an anticipator circuit that is mounted on, and electrically connected to, a conductive shaft projecting from the base of the thermostat, the method comprising mounting an insulative member on the conductive shaft between the base and the anticipator circuit, and mounting the bi-metal coil on the insulative member, so that the bi-metal coil extends between the thermostat base and the anticipator circuit.
Dependencies are inferred from the claim text.