Today in 2014, US Patent 8671802 B2 was issued, an invention of Chikamitsu Takagi, for his “Bottle Cap Opener.” Here’s the Abstract:
A movable outer cylindrical member and a movable inner cylindrical member are arranged vertically movably in a lower half of a cylindrical main body. By placing the movable inner cylindrical member on a bottle mouth and pushing down the cylindrical main body, a lower end of a hooking member is engaged with a lower end of the crown cap to pry the crown cap away. At the same time, the movable outer cylindrical member is moved up and a piston inside a cylinder arranged in an upper half of the cylindrical main body is moved up with the movable outer cylindrical member, so that the air in the cylinder is compressed, and a cover member is brought out in by the compressed air.
Miles Jordan says
Boy….that looks really handy, eh?
JD Doyle says
How can someone build something so complicated to do something so simple!?