Patent ID: 7246575

Claim:
A thrust fork comprising: a handle portion; and a thrust fork main body provided in a leading end of the handle portion, said thrust fork main body including a forked rod having a pair of branch rods branched in a forked shape; a pair of movable opening and closing rods which have base end portions respectively attached to leading end portions of said branch rods via pivots and are arranged so as to oppose to each other and to freely swivel around the pivots in rising and falling directions with respect to said branch rods; returning means for biasing said opening and closing rods so as to swivel in the rising direction with respect to said branch rods; stopper means for regulating motion of said opening and closing rods swiveling in an outward direction of said forked rod; said stopper means permitting said opening and closing rods to be arranged between a position substantially aligned with each other when said opening and closing rods swivel in the rising direction and a position slanted down toward said forked rod when said opening and closing rods swivel in the falling direction; and a constraining rope having a desired length and provided in the manner that one end is engaged with a leading end portion of said one opening and closing rod and the other end is engaged with a leading end portion of said other opening and closing rod wherein the leading ends of said forked rod are opened and closed by said both the opening and closing rods, by swiveling of said both the opening and closing rods.