Patent ID: 9616319
Date: 2017-04-11
CPC Classifications: A63D

Claim:
1. A two sided ball having only two sides, comprising: a first side of said only two sides having a front end portion, a rear free end portion and a bottom surface portion, said front end portion of said first side comprising an abutment surface; a second side of said only two sides having a front end portion, a rear free end portion and a bottom surface portion, said front end portion of said second side comprising an abutment surface; a pivot portion pivoting around a pivot axis and coupling said front end portions of said first and second sides, said first and second sides pivoting around said pivot axis from a predetermined repeatable closed position with said first and second sides aligned side by side with each other to a predetermined repeatable open position with said abutment surfaces pivoted into contacting abutment defining a releasable fixed open V-shaped configuration with an included angle of about 60 degrees; and said pivot portion comprising a plurality of hinge fingers each having a bore formed therethrough and a pivot pin extending through each bore, said plurality of hinge fingers comprising a plurality of closely interleaved flat parallel plates rotating around said pivot pin with a tight rotating fit and providing an accurate, tight pivotal coupling between said first and second sides.