Lighting system for rotatable toy
US4563160A · kind A · utility
Inventor
Key dates
| Filing date | Mar 9, 1984 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Mar 9, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/18
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A circuit for controlling lamp flash interval and duration which comprises an NE555 integrated circuit in combination with resistances and capacitances. In the circuit, a resistor and a capacitive switch in series therewith govern flash interval. The capacitive switch includes a normally closed centrifugal switch which, when closed, presents a given capacitance in series with the resistor and when open presents a reduced capacitance in series with the resistor. The capacitance is provided by two capacitors. In one embodiment, when the switch is closed, one capacitor is in series with the resistor and the other is bypassed and when the switch is open, both capacitors are in series with each other and with the resistor. In the other embodiment, when the switch is closed, the two capacitors are parallel with each other and in series with the resistor and when the switch is open, one of said parallel capacitors is bypassed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.