Back to results
US 5,494,625 AGranted
Embossed, inflatable ball making method
OwnerLiang F. Huinventor
Life of this patent
Estimating the term…
Abstract
The method includes the steps of i) molding an inner tube from butyl rubber, ii) processing the outer wall of the inner tube into a coarse surface; iii) preparing cover panels from ethylene vinyl acetate (EVA) through a foaming process and then processing the inside wall of each cover panel into a coarse surface; iv) covering the cover panels over the inner tube by a press to form a blank ball; and v) embossing the surface of the blank ball thus obtained by an embossing machine through a heating process and then quickly cooling the embossed ball.
Claims3
A method of making an inflatable ball, the method comprising the steps of:
- i) molding an inner tube from butyl rubber and then processing the outer wall of the inner tube into a coarse surface;
- ii) preparing cover panels from ethylene vinyl acetate (EVA) through a foaming process and then processing the inside wall of each cover panel into a coarse surface;
- iii) covering the cover panels over the inner tube to form a blank ball;
- and
- iv) embossing the surface of the blank ball thus obtained by an embossing machine through a heating process and then quickly cooling the embossed ball.
2 more elements
Dependencies are inferred from the claim text.