US 3,936,963 AGranted

Tennis scoring device

AssigneeKingsley Chan

InventorKingsley Chan

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Abstract

A wrist-worn tennis scoring device including a back having wrist mounting straps and a pivot post to receive a stack of five discs, the first two of which are rotatable and have separately colored index tabs which project outwardly from the disc peripheries, the tabs being rotatably alignable with score figures on the fifth or face disc. The third disc is rotatable and has a series of numbers in a circle around its periphery and between the third and face discs is a rotatable, transparent fourth disc having a second set of numbers in a circle concentric with the circle of numbers on the third disc. The face disc has a pair of diametrically opposed holes through which the numbers on the third and fourth discs can be observed. The tab indicator positions record the player point scores within each game and the numbers appearing in the face disc windows record the number of games scored in each set by each player.

Claims7

Dependent claims

A score recording device comprising:

a back member having a face and a pivot post projecting from the face;
a first disc rotatably mounted on the pivot post and having a first tab projecting radially outwardly from its periphery;
a second disc rotatably mounted on the pivot post and having a second tab projecting radially outwardly from its periphery;
a third disc rotatably mounted on the pivot post and having a first circle of scoring characters on its surface facing away from the face of the back member;
a fourth disc rotatably mounted on the pivot post, the surface of the fourth disc facing away from the third disc having both a second circle of scoring characters arranged concentrically with the first circle of scoring characters and an annular transparent portion radially aligned with the first circle of scoring characters, the first, second, third and fourth discs being arranged on the pivot post such that the first circle of scoring characters is otherwise visible through the transparent portion of the fourth disc and the first and second circles of scoring characters are otherwise visible when looking toward the face of the back member;
and
a fifth, cover disc fixedly mounted on the pivot post and having two sets of scoring characters arranged in separate hemicircles on its surface facing away from the face of the back member, the first and second tabs being visible beyond the periphery of the cover disc and being rotatably alignable with the individual scoring characters of the respective hemicircles on the face of the cover disc by rotation of the first and second discs, respectively, the cover disc further having a first window in alignment with the first circle of scoring characters and a second window in alignment with the second circle of scoring characters such that selected ones of the scoring characters of the first and second circles of scoring characters can be made to appear in the first and second windows, respectively, by rotation of the third and fourth discs, respectively.

4 more elements

A device for recording both the number of points scored by each of two players in a game and the number of games scored by each player in a set of such games, the recording device comprising:

a back having a projecting pivot post;
a first disc rotatably mounted on the pivot post adjacent to the back and having a first tab projecting radially outwardly from its periphery;
a second disc rotatably mounted on the pivot post adjacent to the first disc and having a second tab projecting radially outwardly from its periphery;
a third disc rotatably mounted on the pivot post adjacent to the second disc and having a third tab projecting radially outwardly from its periphery and further having a first circle of scoring characters on its surface facing away from the second disc;
a fourth disc rotatably mounted on the pivot post adjacent to the third disc and having a fourth tab projecting radially outwardly from its periphery and further having a second circle of scoring characters which are the same as the first circle of scoring characters, arranged concentrically with the first circle, on the surface of the fourth disc which faces away from the third disc, the fourth disc having a circular, optically transparent portion in alignment with the first circle of scoring characters;
and
a fifth disc fixedly mounted on the pivot post and having two sets of corresponding scoring characters arranged in separate hemicircles on its outer surface facing away from the fourth disc, the fifth disc further having a first window in alignment with the first circle of scoring characters and a second window in alignment with the second circle of scoring characters, the radius of the fifth disc being less than the radial distance of the first and second tabs from the pivot post,
the first and second tabs being visible beyond the periphery of the fifth disc and being rotatably alignable with the individual scoring characters of the respective hemicircles on the face of the fifth disc by rotation of the first and second discs, respectively, and the third and fourth discs being rotatable to align the scoring characters of the first and second circles with the first and second windows in the fifth disc, respectively.

5 more elements

Dependencies are inferred from the claim text.