Abstract An inflatable game ball having an outer shell of rubber or rubber-like elastomer, enclosing a hollow interior space, with an internal self-sealing check valve extending through the shell. The check valve is molded of soft rubber and has a pair of thin flanges or lips, arranged side-by-side, with one or more openings that are opened up to allow air to pass freely into the ball when the air pressure on the outside of the valve is greater than the pressure inside the ball. A hand pump is provided, which has a nozzle that inserts into the outside opening of the check valve, and operating the pump causes air to be pumped into the ball to inflate the latter to the desired pressure. The thin flanges of the check valve are closed tightly against one another by the air pressure within the ball, thereby sealing the valve opening to prevent escape of the air. Tennis balls which have lost their pressure and become dead are restored to like-new condition by drilling a hole through one side of the ball, inserting a check valve insert with adhesive on the sides, and inflating the ball to like-new pressure with a hand pump after the adhesive has set, or cured.
Inventors
👤 Allan C. Hoffman
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-24 04:31
CPC Classifications
A; A63; A63B; A63B39/00; A63B39/02; A63B39/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
The method of repressurizing a dead inflatable game ball having an imperforate hollow rubber shell, comprising the steps of: 1. drilling a hole through the rubber shell, using a tool that removes material and leaves a cylindrical hole in the shell; 2. inserting an inflation check valve of soft resilient rubber into the hole, said check valve having a cylindrical barrel portion that fits snugly into the hole, and said barrel portion terminating in a wedge-shaped configuration formed by two opposed, converging, sealing lips that come together separably along a line of contact at their inner extremities to open the valve and seal the valve against escape of air when the pressure inside the ball exceeds atmospheric pressure;
Claim 2
Independent Claim
118 words
The method of repressurizing a dead inflatable game ball having an imperforate hollow rubber shell, comprising the steps of: 1. drilling a hole through the rubber shell, using a tool that removes material and leaves a cylindrical hole in the shell; 2. inserting an inflation check valve of soft resilient rubber into the hole, said check valve having a cylindrical barrel portion that fits snugly into the hole, and said barrel portion terminating in a wedge-shaped configuration formed by two opposed, converging, sealing lips that come together separably along a line of contact at their inner extremities to open the valve and seal the valve against escape of air when the pressure inside the ball exceeds atmospheric pressure;
Claim 3
Dependent Claim
43 words
securing the check valve in place, so that it will not be dislodged during violent play; and 4. forcing air through the inflation check valve whereby said lips separate at said line of contact and air passes into the interior of the ball.
Claim 4
Dependent Claim
43 words
securing the check valve in place, so that it will not be dislodged during violent play; and 4. forcing air through the inflation check valve whereby said lips separate at said line of contact and air passes into the interior of the ball.