Dual-unlock combination lock
US11280112B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 9, 2019 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B37/0065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A dual-unlock combination lock provides a first set of correct password and a second set of correct password to be used independently. After a password switch pushbutton is operated to drive a bracket to a corresponding position, a corresponding correct password is input into a combination wheel, so that an elastic member props the bracket to release from a transmission element in order to unlock the combination lock. One password element can achieve the effect of unlocking the lock by using two sets of correct password independently to provide a broader scope of applicability. The first set of correct password with the setting and use similar to those of a common password is provided for ordinary users, and the second set of correct password is a fixed code provided for designated users to unlock the combination lock by scanning an identification code by a mobile terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.