Title: Safety feature for function control circuit

• Summary
• Claims
• Description
• View all

Abstract: A safety feature for a function control circuit particularly adapted for use with timing circuitry adapted to produce a time based signal is provided. A function signal circuit is adapted to produce either a first or a second function selecting signal. A multi-position switch is coupled to the function signal circuit and is adapted to remain in a quiescent position. The multi-position switch is further adapted to be manually displaced in a first direction to effect producing of a first function selecting signal by said function signal circuit and is further adapted to be manually displaced in a direction opposite to said first direction to effect producing by said function signal circuit of a second function selecting signal. An inhibit circuit is coupled to the timing circuit for receiving the time based signal and is also coupled to the function control circuit and multi-position switch and in response to displacement of the multi-position switch in the first direction inhibits producing of the second function selecting signal in response to displacement of said multi-position switch in the opposite direction within a predetermined interval of time after the multi-position switch means is returned from displacement in the first direction.


Do you think this is a good invention? Vote now: