System for confirming hit locations on tennis court boundaries
AssigneeWrite Stuff Enterprises, Inc.
InventorsJeffrey Rodengen, Roger Tyzzer, Ray L. Hauser
Life of this patent
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Abstract
The present invention is an article and process for determining the site of impact of a movable object on a treated surface, where a tennis ball is treated with a striking composition, and a boundary line region is treated with a receiving composition such that when the striking composition and the receiving composition are in physical contact, a calorimetric indicator is left on the receiving composition to indicate the point of contact.
Claims26
A process for determining point of contact of a movable object on a surface comprising:
- (a) disposing a striking composition having a leuco dye to a movable object;
- (b) disposing a receiving composition to a surface, wherein said receiving composition reversibly changes from colorless to colored at a pH between 3-11;
- (c) observing a colorimetric indicia of contact at the point of impact on said surface portion where said movable object contacts said surface treated with said receiving composition;
- and
- (d) removing from view said colorimetric indicia from said surface in less than 90 seconds.
A method for determining the point of impact of a tennis ball comprising:
- (a) treating a tennis court surface with a receiving composition;
- (b) treating a tennis ball with a striking composition;
- (c) contacting treated tennis balls on said treated court;
- (d) said contact creating on impact a colorimetric impression of said treated tennis ball on said tennis surface court treated with said receiving composition;
- (e) observing the colorimetric change at the point the tennis ball, with a striking composition, contacts the tennis court with a receiving composition;
- and
- (f) removing said calorimetric change from view on said tennis court with a removing composition in less than 90 seconds.
An article for determining the area of impact on a treated surface wherein said article comprises a striking composition disposed on its surface, wherein said striking composition exhibits a colorimetric change on said treated surface that is removable with a removing composition in less than 90 seconds.
Dependencies are inferred from the claim text.