Today in 1995, US Patent 5458253 A was issued, an invention of Michael Shapcott, for his “Bottle Cap.” Here’s the Abstract:
A crown seal for sealing an opening of a bottle including a flange having between twenty-eight and thirty-two flutes around the circumference thereof. Each flute comprises depression having a generally triangular surface area between a pair of ridges. The additional flutes provide more points of contact with the bead are provided, ensuring a securement of increased strength between the crown and bottle.
