Closure valve for a fluid container
AssigneesBayerische Motoren Werke Aktiengesellschaft, Rover Group Limited
InventorsOttmar Stiegler, Raymond Paul Doherty
Life of this patent
Estimating the term…
Abstract
A closure valve for the filler neck of a vehicle fuel tank includes a plastic ball with a vapor impermeable plate attached to it to form part of its surface. The ball is held between a carrier on the inside and a seal carrier on the outside, the seal carrier being held against the ball by a screw cap, a spring washer and a vapor seal. When the valve is closed the plate, the seal carrier, the vapor seal and ring seals form a relatively impermeable barrier covering the end of the fuel filler pipe and preventing the escape of significant amounts of fuel vapor.
Claims17
A closure for the neck of a container for liquid, comprising:
- a cap for covering the end of the neck, the cap having an aperture for receiving liquid therethrough;
- and
- a ball mounted in the neck and having a passage therethrough and an impermeable portion forming part of its outer surface, the ball being rotatable between a first position in which the passage is aligned with the aperture to open the neck and a second position in which the impermeable portion is aligned with the aperture to close the neck.
A container for liquid having a neck through which liquid can be put into the container and a closure for closing the neck, wherein the closure comprises:
- a carrier which can be inserted into the neck;
- a ball member rotatably supported on the carrier such that it can be mounted in the carrier and inserted into the neck with the carrier;
- an aperture through the ball member such that it can be rotated in the carrier to open and close the neck;
- and
- removable retaining means which can be attached to the neck so as to releasably retain the carrier and ball in the neck.
A vehicle fuel tank comprising:
- a tank body;
- a filler pipe having a neck at a distal end thereof;
- a cap for covering the end of the neck, the cap having an aperture for receiving liquid therethrough;
- and
- a ball mounted in the neck and having a passage therethrough and an impermeable portion forming part of its outer surface, the ball being rotatable between a first position in which the passage is aligned with the aperture to open the neck and a second position in which the impermeable portion is aligned with the aperture to close the neck.
A vehicle fuel tank having a neck through which liquid can be put into the container and a closure for closing the neck, wherein the closure comprises:
- a carrier which can be inserted into the neck;
- a ball member rotatably supported on the carrier such that it can be mounted in the carrier and inserted into the neck with the carrier;
- an aperture through the ball member such that it can be rotated in the carrier to open and close the neck;
- and
- removable retaining means which can be attached to the neck so as to releasably retain the carrier and ball in the neck.
Dependencies are inferred from the claim text.