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US 4,729,472 AGranted
Use-monitoring closure for tennis ball cans
OwnerMartin Lubin, Adam Lubininventors
Life of this patent
Estimating the term…
Abstract
A use-monitoring closure for the open top of a tennis ball can including a cap for releasably attaching to and closing the open top, and an adjustable use recorder/displayer on the cap for recording and displaying the usage of tennis balls within the can.
Claims19
A use-monitoring closure for the open top of a tennis ball can comprising
- a cap for releasably attaching to and closing said open top, and
- a use totaller on said cap for counting, recording, and displaying the usage of tennis balls within the can.
The combination comprising
- a tennis ball can for packaging new tennis balls and storing partially used balls between uses, said can having an open top,
- a cap for releasably attaching to and closing said open top, and
- a use totaller on said cap for counting, recording, and displaying the usage of tennis balls within the can.
A method of recording use of tennis balls comprising
- providing a tennis ball can for packaging new tennis balls and storing partially used balls between uses, said can having an open top, a cap for releasably attaching to and closing said open top, and a use totaller on said cap for counting, recording, and displaying the usage of tennis balls within the can,
- removing said balls from said can,
- playing tennis with said balls,
- returning said balls to said can, and
- counting the usage of said tennis balls on said totaller to reflect total usage of said balls.
2 more elements
Dependencies are inferred from the claim text.