Timer with touch control
US4467222A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1982 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Aug 16, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/52
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The timer controls a dispensing machine and in particular controls the dispensing cycle for a product such as coffee, a beverage, or instant mashed potatoes. The control includes regulation of the water portion of the cycle and the solid or powder portion of the cycle. The timer is controlled by a plurality of touch switches each coupling via a resistor network to the control logic of the timer. The control logic is preferably CMOS-type having a high input impedance permitting use of a resistor network of high resistance to limit current flow especially under fault. The touch switches control functions such as "hot water", "large portion", "small portion", "stop", and "push and hold".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.