Closure device for a fluid container
AssigneeHydac Filtertechnik GmbH
InventorMichael Kerber
Life of this patent
Estimating the term…
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.
Claims13
A closure device for a fluid container, the closure device comprising:
- a base being attachable to the container opening of the fluid container and having an annular body projecting radially outwardly from the base;
- a cover part being capable of enclosing at least one of a vent or a filter and being held on the base so as to be freely rotatable relative to the base in a functional unlocking position of the cover part and the base and to be locked for simultaneous rotation of the cover part and the base in a functional locking positon of the cover part and the base, the cover part having an annular groove being radially recessed and extending along an entire inner circumference of the cover part near an opening rim of the cover part, the annular groove receiving the annular body allowing relative rotation and preventing relative axial movement of the base and the cover part;
- and
- a safety device connecting the cover part and the base in the functional locking positon by a magnet force of a magnetic field generator moving the safety device to the functional locking position.
Dependencies are inferred from the claim text.