Abstract: A male screw 1 is divided along a partial length from the head 2 to a part of the shank 3 by a second groove 7 into at least two portions 11, 12. The portions 11, 12 divided by the second groove 7 have their outer peripheral surfaces extending obliquely so that a diameter of the male screw 1 reduces progressively downward from the head 2.

Abstract: The invention is a scissors in which the direction of blades is changeable with regard to handles. The feature is a pair of cutting implement (5A) and (5B), which is a curved intermediate portion (4) between handles (3) and a pin (6) with a constraint mechanism (13).

Abstract: An antitheft alarm device has an electric circuit 21 for generation of an audible alarm and a supporting mechanism 42 for a flexible cord 6 formed between an upper and lower face plates 2, 3. The circuit 21 has a switch 26 comprising a stationary terminal 35 and a movable terminal 34 biased by a spring to be engaged with the stationary terminal 35. The flexible cord 6 detachably held by the mechanism 42 normally maintains the movable terminal 34 to be disengaged with the stationary terminal 35. After the cord 6 is detached, the movable terminal 34 engages with the stationary terminal 35 and consequently the audible alarm is generated.