Abstract: A method and a structure are disclosed for adjusting the distance between two preforms. Thus, the distance between two preforms is changed by adjusting the proportion in the number of two carriers on the track. In addition, the possibility of wear of the carriers is greatly reduced. Further, it is only necessary to prepare carriers of fewer sizes so as to satisfy the distance required by diverse different containers during fabrication.

Abstract: A method and a structure are disclosed for adjusting the distance between two preforms. Thus, the distance between two preforms is changed by adjusting the proportion in the number of two carriers on the track. In addition, the possibility of wear of the carriers is greatly reduced. Further, it is only necessary to prepare carriers of fewer sizes so as to satisfy the distance required by diverse different containers during fabrication.

Abstract: An anti-slip type electric drill chuck mainly includes a body which is obliquely provided with three pawls for clamping a drill head. The outer surface of one end of the three pawls is provided with a threaded surface for engaging a tapered threaded hole in a bearing nut, which has an outer end with teeth, an end portion provided with a ball ring. A check nut protective sleeve encloses the ball ring and bearing nut, and has elastic pointed portions engage the teeth. A drive annular block engages the inner wall of the bearing nut. A front housing sleeve engages the drive annular block and surrounds the aforesaid components. The front housing sleeve is rotated by hand to advance or retract the pawls to thereby loosen or tighten drill head. When the pawls clamp the drill head, the check nut protective sleeve stabilizes the bearing nut to prevent slippage thereof.

Abstract: Container conveying apparatus including: multiple chain elements each of which is formed with a first receiving space, a second receiving space and a connection section spaced from each other; multiple connecting members each having a pivot end and a fixed end, the pivot end being pivotally disposed in the second receiving space of a forward chain element, while the fixed end is connected with the connecting section of a rearward chain element. The chain elements are serially connected to form an elongated or an endless chain. Multiple holding structures are disposed in the first receiving spaces of the chain elements and are movable along with the chain elements along a rail. Each holding structure includes a clamping pawl and a push rod movable between first and second positions in the extending direction of the claws.

Abstract: Distributing/feeding device including: a rotary seat including a rotary disc, each time the rotary disc is driven, the rotary disc rotating by a predetermined angle, several material racks being disposed on predetermined portions of the rotary disc; a feeding mechanism disposed beside the rotary disc, the feeding mechanism including a lifting board and a driving member for driving the lifting board to up and down reciprocally move; and a clamping mechanism disposed above the feeding mechanism, the clamping mechanism including a clamping seat which is swingable within a predetermined range and a material taking member disposed on the clamping seat and up and down reciprocally movable. When the clamping seat is moved to a predetermined position, a predetermined section of the material taking member is just positioned above a material rack for fixedly holding a workpiece placed in the material rack. Numerous work pieces are at the same time placed in the material racks on the rotary seat.

Abstract: A self-locking chuck includes a body having one end for attachment onto a rotatable spindle and another end provided with a plurality of axially inclined jaw members having threaded surfaces formed on their outer sides for engagement with a threaded socket. Top and bottom cover shells are disposed, respectively over forward and rearward sections of the body, and a flexible thrust bearing ring assembly is disposed within the bottom cover shell. A spring and thrust bearing ring are disposed within the bottom cover shell for flexibly engaging the top cover shell and jaw members that move back and forth with the rotational force produced during use to grip or release a drill bit and permit adjustment of the engagement between the threaded socket and thrust bearing ring through manipulation of the top cover shell.

Abstract: A bit holding system includes a transmission block coupled to the transmission shaft of a power hand tool, a plurality of clamping rods obliquely radially mounted in respective oblong holes on the transmission block to hold a bit at a front end of the transmission block, the clamping rods each having a threaded rear end extended out of the transmission block, a first impact member having a tapered, threaded inside wall threaded onto the threaded rear ends of the clamping rods and a plurality of equiangularly spaced and backwardly extended bottom teeth, a spring supported second impact member mounted around the transmission block between the first impact member and the reversible motor drive, the second impact member having teeth acting with the teeth of the first impact member, and a shell for holding down by hand to stop the second impact member from rotary motion, causing it to impact a resisting force to the first impact member upon each rotation cycle of the first impact member when the first impact membe

Abstract: An auto-locking bit holding system includes a plurality of clamping rods secured by a nut to hold a bit in a transmission block being connected to a transmission shaft of an electric hand tool, a shell covered around the transmission block and the nut, and a locating barrel fastened to the shell to stop the nut inside the shell, wherein: the nut has two projecting blocks at one end; the locating barrel has a body and a plurality of longitudinal locating ribs equiangularly spaced around the periphery of the body; an annular impact member is mounted around the cylindrical transmission block between the nut and the locating barrel, the annular impact member having two projecting blocks bilaterally disposed at one end, and a plurality of equiangularly spaced and longitudinally extended locating grooves on the inside respectively forced into engagement with the locating ribs of the body of the locating member, the projecting blocks of the annular impact member being turned with the annular impact member to strike

Abstract: A chuck for holding a tool a central axis, comprising: a main body, surrounding the central axis and having a periphery passed through by several oblique guiding openings, which are symmetrically arranged around the central axis; several jaws, gliding in the guiding openings and having a plurality of teeth; a threaded ring system, mounted on the main body, rotatable around the central axis, having an inner periphery with a thread, which engages with the teeth of the jaws, such that by turning the threaded ring system the jaws are driven towards the central axis or away therefrom; a holding ring for supporting the threaded ring system; a washer, mounted on the main body, for supporting the holding ring; and a front cover, covering the main body from the front end thereof, tightly linked to the holding ring and having an inner periphery with coupling elements, which engage with coupling elements on the threaded ring system, such that turning the front cover around the central axis drives a rotation of the threa

Abstract: A chuck unit installed in a power hand tool and controlled to hold down/release a bit, including a barrel, three clamping rods, a front cover shell, a rotary control device, a stop member, a rear cover shell, and a dust ring, wherein the rotary control device has a nut with embossed peripheral blocks for positive positioning in respective recessed locating holes in the front cover shell; the rotary control device is coupled to a stop flange outside the barrel and revolvably supported on the barrel by steel balls; the stop member is formed of two symmetrical halves and mounted on the front end of the barrel to stop the rotary control device from forward movement.