Patent ID: 8671802

Claim:
A bottle cap opener comprising: a cylindrical main body, a movable outer cylindrical member arranged in a lower half of the cylindrical main body in a vertically movable manner, a movable inner cylindrical member arranged inside the movable outer cylindrical member in a vertically movable manner, provided with an opening part formed in a lower end thereof to receive a bottle mouth, and a top wall part having a projection receiving a top surface of the crown cap at an upper end thereof, a lever supported on the movable inner cylindrical member in a vertically swingable manner above the top wall part, a hooking member of which an upper end is pivotally fitted to an end of the lever in an inward and outward swingable manner and a lower end is provided with a hooking claw engageable with the crown cap, a receiving member arranged on the other end part side in the movable outer cylindrical member to receive an upper surface of the other end of the lever by a lower end surface thereof, a spring urging the other end part of the lever upward at all times and pressing the upper surface of the other end of the lever against the lower end surface of the receiving member, a cylinder arranged in the upper half of the cylindrical main body and having an open upper end, a piston fitted in the cylinder and moved up and down integrally with the movable outer cylindrical member, a cover member detachably fitted into an upper end opening part of the cylinder, brought out upward, when a frictional force between the cylinder and the cover member is overcome, by the pressure of the air inside the cylinder compressed by the piston which is moved upward upon opening operation of the crown cap, and generating a sound by letting the compressed air out from the inside of the cylinder when the cover member is brought out, and a spring urging the movable outer cylindrical member downward against the cylinder at all times.