Coin operated switch
US4673828A · kind A · utility
1Cited by
23References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1985 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Apr 8, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S200/03
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
This invention is a coin operated switch which may be incorporated into coin operated machines such as video games to reduce cheating of the credit granting feature of the machines. This invention incorporates two electromechanical switches and circuitry which further use the existing machine circuitry to time the travel of a coin between the switches and to grant a credit on the machine only if each switch is tripped and released in the proper order and within the predetermined elapsed time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.