Safe knob
US4300525A · kind A · utility
40Cited by
4References
4Claims
0Family size
Inventors
Key dates
| Filing date | Jun 15, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Jun 15, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7131
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A control knob for turning on or off a burner of a kitchen gas stove, the knob including a cam-faced spur on a side of the knob shank which travels behind a stationary stop mounted on the stove when the knob is being turned to shut off the gas, the stop preventing the knob to be turned on again unless the knob is first pushed axially so the spur clears the stop, the construction preventing children to readily turn the gas on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.