Disposable piezoelectric lighter
US6540506B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Jan 11, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q2/287
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A disposable piezoelectric lighter includes a piezoelectric unit disposed in a casing for generating piezoelectricity and a resilient element for applying a press resistance to the piezoelectric unit. The piezoelectric unit includes a base body and a plunger body, having an enlarged plunger head, upwardly extended from the base body. The resilient clement, coaxially mounted on the plunger body, has two ends biasing against a bottom side of the plunger head and a ceiling of the base body. The press resistance of the resilient element is an additional force added to the piezoelectric unit. Therefore, the additional force is adapted for resisting a downwardly pressing force applied by an under age child on an ignition button while an adult is capable of pushing down the ignition button to ignite the disposable piezoelectric lighter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.