Closure device for a fluid container
US11376949B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2018 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | May 18, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/0483
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A closure device for a fluid container, in particular a hydraulic tank, has a base (4), which can be attached to the container opening and has a cover part (2), which encloses a ventilation and/or a filter device (36). The cover part (2) is held on the base (4) so as to be freely rotatable in a functional unlocking position. In a functional locking position, the closure device permits the container opening to be unlocked by a safety device (48, 50, 58) while connecting the cover part (2) to the base (4). The safety device (48, 50, 58) can be actuated by a magnetic device generating a magnetic field (62). The magnetic device establishes the functional locking position of the cover (2) and the base (4) by magnetic force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.