Patent ID: 8469212

Claim:
A safety cap for disposing a container comprising: a cap main body having a top plate with a pouring hole, and an outer circumferential wall and an inner circumferential wall for attachment to a container neck portion, said outer and inner circumferential walls being suspended from the top plate, and a part of the outer circumferential wall being formed in an inward elastically deformable operating plate, at a peripheral edge of which a separation line is cut except for its lower end or vicinity thereof remaining as a connection portion to the outer circumferential wall, the inward elastically deformable operating plate being configured to deformably move between a first position, a second position and a third position; a cover connected to an upper portion of the cap main body via a hinge such that the cover is capable of moving toward and away from the cap main body; a pair of engaging means is disposed at a peripheral wall of the cover and the inward elastically deformable operating plate, respectively, the pair of engaging means being configured to engage with each other in the first position of the inward elastically deformable operating plate, and the cover being configured to open by releasing the engagement by elastically deforming the inward elastically deformable operating plate inward into the second position; and a fixing means configured to fix the inward elastically deformable operating plate to the cap main body or the container neck portion by deforming the inward elastically deformable operating plate inwardly to the third position from the second position, wherein the inward elastically deformable operating plate: i) having a lower end and an upper end and is gradually thicker beginning at the lower end toward the upper end, ii) is disposed so as to protrude outward from an outer surface of the outer circumferential wall, and iii) is defined by an inverted U-shaped split groove and extends vertically from a small diameter portion on the outer circumferential wall to a vertically intermediate portion of the same, a lower end of the inward elastically deformable operating plate is formed into the connection portion serving as a fixing end, around which the inward elastically deformable operating plate can be disposed in a freely inward swingable manner as a whole, the fixing means includes an engaging piece disposed at the inward elastically deformable operating plate, and an engaging piece receiver disposed at the cap main body except for the inward elastically deformable operating plate, and the engaging piece is disposed on a top end of the inward elastically deformable operating plate, and further, the engaging piece receiver is a protection formed at an undersurface of the top plate outward of the inner circumferential wall.