Vent cap for a container accommodating hydraulic fluids
AssigneeDaimler-Benz Aktiengesellschaft
InventorLudwig Bauer
Life of this patent
Estimating the term…
Abstract
A vent cap for a container of housing which accommodates a hydraulic operating medium. The vent cap includes a housing type cover which has labyrinth walls. The cover is adapted to be closed by a base insert which includes a vent passage. The vent cap is adapted to be mounted on a vent opening of the container or housing. The housing type cover is rotatably mounted on the base insert.
Claims36
A vent cap for closing and venting an opening of a container for hydraulic operating means located on the ambient-air side,
- said opening comprising an aperture with edges for connecting the interior of the container with the ambient air,
- having a lid-shaped part with a peripheral wall and a base-shaped part of the cap, where the base-shaped part of the cap is inserted within the peripheral wall of the lid-shaped part of the cap and has ring-shaped sealing means for the sealing of the opening disposed centrally with respect to a central axis, and
- where one of the parts of the cap is provided with fastening means for the detachable securing of the fitting position of the vent cap at the opening of the container and both parts of the cap have corresponding central mounting supports for the mutual mounting,
- with said mounting supports fastening the parts of the cap essentially immovably with respect to one another in the direction of the central axis,
- characterized in that
- the lid-shaped part of the cap has a journal located radially on the inside with respect to the central axis, and
- the base-shaped part of the cap has a hub resting on the journal,
- with the hub being provided with a central ring-shaped receiving groove contacting said edges which is separated from the fastening means, for said sealing ring means engaging said edges, and
- both parts of the cap in fitting direction, by means of their journal-hub-mounting, being mounted so that they can be rotated freely with respect to one another.
A vent cap adapted to be mounted on the vent opening of a container for accommodating a fluid, the vent cap including a housing cover, a base insert means for covering the housing cover, and a vent opening means, characterized in that means are provided for rotatably mounting the housing cover on the base insert means including a bearing pin provided on the housing cover, and a hub provided on the base insert means, the base insert means includes a circumferential groove means located outside of the housing cover, an annular seal means is accommodated in the circumferential groove means, the bearing pin is disposed so as to be coaxial with respect to a longitudinal axis of the base insert means, the cover housing includes a chamber, the bearing pin includes at least one passageway for communicating the vent opening with the chamber, the bearing pin further includes a plurality of tongues adapted to be radially compressible with respect to the longitudinal axis of the base insert means under a spring tension, and in that the hub includes stop means cooperable with tongues of the bearing pin for axially fixing the housing cover relative to the base insert means.
A vent cap adapted to be mounted on a vent opening of a container for accommodating a fluid, the vent cap including a housing cover, a base insert means for covering the housing cover, and a vent opening means, characterized in that means are provided for rotatably mounting the housing cover on the base insert means including a bearing pin provided on the housing cover, and a hub provided on the base insert means, the bearing pin is disposed so as to be coaxial with respect to a longitudinally extending center axis of the base insert means, the cover housing includes a chamber, the bearin pin includes at least one passageway for communicating the vent opening means with the chamber, the bearing pin further includes a plurality of tongues adapted to be radially compressible with respect to the longitudinally extending center axis of the base insert means under a spring tension, and in that the hub includes stop means cooperable with tongues of the bearing pin for axially fixing the housing cover relative to the base insert means.
A vent cap adapted to be mounted on a vent opening of a container for accommodating a fluid, the vent cap comprising a housing cover, a base insert means for covering the housing cover, and a vent opening means, means are provided for rotatably mounting the housing cover on the base insert means including a bearing pin provided on the housing cover, and a hub provided on the base insert means, the bearing pin is disposed so as to be coaxial with respect to a longitudinally extending center axis of the base insert means, the cover housing includes a chamber, the bearing pin includes at least one passageway for communicating the vent opening means with the chamber, the bearing pin further includes a plurality of tongues adapted to be radially compressible with respect to the longitudinally extending center axis of the base insert means under a spring tension, and the hub includes stop means cooperable with tongues of the bearing pin for axially fixing the housing cover relative to the base insert means, characterized in that
- the base insert means includes a plurality of labyrinth walls, and in that means are provided for communicating an interior of the vent cap with the atmosphere when the vent cap is installed on the vent opening of the container.
A vent cap adapted to be mounted on a vent opening of a container for accommodating a fluid, the vent cap comprising a housing cover, a base insert means for covering the housing cover, a vent opening means, means are provided on the base insert means, the bearing pin is disposed so as to be coaxial with respect to a longitudinally extending center axis of the base insert means, the cover housing includes a chamber, the bearing pin includes at least one passageway for communicating the vent opening means with the chamber, the bearing pin further includes a plurality of tongues adapted to be radially compressible with respect to the longitudinally extending center axis of the base insert means under a spring tension, and the hub includes stop means cooperable with tongues of the bearing pin for axially fixing the housing cover relative to the base insert means, characterized in that
- the base insert means includes a bead portion, and in that the housing cover includes means for accommodating the bead portion so as to enable an axial mounting of the housing cover on the base insert means.
Dependencies are inferred from the claim text.