Clocks Driven By Synchronous Motors [g04c 15/00] Patents (Class 968/553)
Cross-Reference Art Collections
- Provided with hand-actuated starting device [G04C 15/00B2] (Class 968/555)
- Provided with automatic starting device [G04C 15/00B3] (Class 968/556)
- Provided with means for indicating disturbance [G04C 15/00B4] (Class 968/557)
- Provided with means for checking sense of rotation [G04C 15/00B5] (Class 968/558)
- Setting the time-indicating means, e.g., by controlling the frequency or by changing the drive of the separate clocks by using an auxiliary motor, etc. [G04C 15/00H2] (Class 968/561)
- Automatic stabilization of net frequency with regard to time, e.g., by comparing one of the clocks with an independent clock, means being provided for automatic compensation of disturbances, etc. [G04C 15/00H3] (Class 968/562)