Patent ID: 6379202
Filing Date: 2002-04-30
Classification: B63B,B66C

Abstract:
A release mechanism in an underwater clamp-type release apparatus, comprising:a base plate, having a penetrating hole positioned at the center and a plurality of screw holes positioned at the circumference thereof a pair of clamp frames, each of them having an inverted L-shape and each of them comprising an upper half portion and a lower half portion wherein the lower half portion is fixed on the base plate while the upper half portion has a hole, and wherein the two clamp frames have a portion of their upper half portions that are parallel and overlapped by facing each other with their holes aligned with each other; a clamp, having a pair of clamp arms and each of the clamp arms comprising a first end, a center section, and a second end wherein the center section has a hole, and the clamp is inserted between the pair of clamp frames and has a pin penetrated through the holes on the clamp frames and on the clamp arms, and the clamp is pivotally connected to the pin, also and the first end is a clamp mouth that comprises a curved portion, a clamped surface, and a concave portion, for tightly clamping and holding a working piece; and a rotationally controlled block, comprising a bottom block, and an annular wall wherein the size of the inner diameter of the annular wall can just fit to contain the second end of the pair of the clamp arms when they are closed to contact each other on their clamped surfaces, and wherein the annular wall includes two openings opposite each other, and the total width of the second end of the clamp arms at a close state allows the clamp arms to pass through the openings when the two clamp arms are tending to open; wherein when the rotationally controlled block is turned an angle of 90, the two closed clamp arms are able to align with the openings in order to let the two clamp arms open to release the working piece.