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US 3,938,690 AGranted
Spill-proof drinking container
AssigneeThe Raymond Lee Organization, Inc.
InventorRobert C. Butler
Life of this patent
Estimating the term…
Abstract
A cover is mounted in a leakproof manner over the open mouth of a drinking container. An opening is formed through the cover in the area of the circumference of the cover. A closure member is slidably mounted on the cover for movement over the opening whereby the container is rendered spill-proof and for movement to a position free from the opening whereby a user may pour and drink liquid in the container through the opening in the cup.
Claims1
A spill-proof drinking container, comprising
- a cover mounted in a substantially leakproof manner over the open mouth of a drinking container and having an opening formed therethrough in the area of the circumference of the cover;
- a closure member slidably mounted on the cover for movement over the opening whereby the container is rendered spill-proof and for movement to a position free from the opening whereby a user may pour and drink liquid in the container through the opening in the cover;
- guide means on the underside of the cover for guiding the closure member, said closure member being movably mounted in the guide means;
- a projecting member extending from the overside of the closure member to facilitate manual movement of the closure member in the guide means;
- and
- compression spring means mounted in close proximity with the closure member in the guide means and abutting the closure member for urging the closure member over the opening.
3 more elements
Dependencies are inferred from the claim text.