Leak-prohibiting device of toner cartridge
US11048190B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2020 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Mar 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0692
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A leak-prohibiting device includes a fixation mount for being mounted to an toner outlet of a housing of a toner cartridge, a valve member mounted in the fixation mount and forced by a first resilient member to seal an opening of the fixation mount, and a push member mounted in the fixation mount and moveable between an extended position where the push member is abutted against the valve member and a retracted position where an engagement portion of the push member is engaged with a position-limiting portion of the fixation mount such that the push member, on which a biasing force of a second resilient member exerts toward the extended position, is prohibited from moving from the retracted position to the extended position. As such, the leak-prohibiting device can positively block the toner cartridge and the toner cartridge can be repeatedly installed with less manual force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.