Disposable childproof lighter
US6220853A · kind A · utility
Inventor
Key dates
| Filing date | Jul 5, 2000 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jul 5, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q2/161
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A disposable childproof lighter includes an ignition means which including a flint supported by a resilient element, a striker wheel, a pair of driven gear elements each coaxially mounted on a side of the striker wheel, and a pair of driving caps each coaxially mounted between the driven gear element and the striker wheel in freely rotating manner. Each driving cap includes a driving cavity formed on an outer side thereof for receiving a gear wheel of the driven gear element in rotatable manner. A plurality of driving teeth are spacedly provided on an inner circumferential surface of the driving cavity for engaging with a plurality of driven gear teeth spacedly provided on an outer circumferential surface of the driven gear element when a downward force is applied to the two driving caps. Accordingly, children under five years old are not strong enough to press down the driving caps to generate friction between the driving caps and the driven gear elements or to maintain the engagement between the driving teeth and the driven gear teeth while turning the driving caps. However, an adult can easily "press and turn" the driving caps to finish the ignition operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.