Appliance timer
US8415573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2012 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Feb 17, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H43/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An appliance timer operable in a selection mode and an operation mode includes a shaft assembly, a switch assembly, a cam device, a bi-directional motor, and a display device. The shaft assembly is operable to select an operation cycle and to drive the display device in the selection mode. The motor rotates in a first rotational direction and a second rotational direction opposite to the first rotational direction in the operation mode. When the motor rotates in the first rotational direction, the motor drives the cam device to operate the switch assembly to actuate or deactivate a plurality of electrical circuits associated with a plurality of appliance functions. When the motor rotates in the second rotational direction, the motor drives the display device to indicate an operational status of the appliance. The rotation of the motor is controlled by a microprocessor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.