Combination lock
US6845643B2 · kind B2 · utility
27Cited by
17References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jun 20, 2003 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Jun 20, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7322
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An inverted U-shaped combination lock is disclosed. The lock includes a male locking mechanisms, a push ring, a hollow spindle, a sealing ring, an abutment ring, number rings, and a spring. The lock can be opened without a password by inserting a key into a keyhole prior to turning an angle of 90 degrees of the key. A ridged section of the mechanism is changed from a higher position to a lower one for disengaging the mechanism from the lock for subsequent removal of the mechanism. The lock also provides help for the user to know the forgotten password and resetting the password.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.