Figure wheel of a combination lock
US6345523B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7367
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A figure wheel of a combination lock has a hollow wheel body with a contact ring securely attached therearound. The wheel body has an annular portion integrally formed therein, an engagement gearing integrally formed at an inner side of the annular portion, a filling opening defined in an outer side of the annular portion, raised figure marks integrally formed on an outer surface of the wheel body and an annular recess defined in a remaining area of the outer surface of the wheel body. The contact ring of the figure wheel is formed by injecting a slip-resistant plastic material into the annular recess from the filling opening via the throat, whereby the outer surface of the figure wheel is slip-resistant and the figure marks of the figure wheel are firm and abrasion-resistant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.