Abstract: A structure for preventing the formation of a dead point for a cam wheel includes a driving wheel with a pressing portion provided at one side thereof for pushing a pushed portion of the cam wheel. When the cam wheel is moved over a distance while rotating simultaneously, a cam portion of the cam wheel pushes one end of the swinging piece. When the one end of the swinging piece is pushed to be apart from the outer periphery of the cam wheel, a restoring piece axially pushes the cam wheel back to its original position. A strapping device includes the above structure, a housing, a first transmission assembly, a second transmission assembly and a third transmission assembly. Tensioning of a circular strap, rapid friction bonding and cutting are sequentially performed by the transmissions of the first to third assemblies, respectively.

Abstract: A rocker assembly of a strapping machine has a rocker having a seat, a positioning panel mounted on the seat and being able to swing, and two teeth panels slidably mounted on the positioning panel. When a fixed end and a tightening end of a wrapping strap are mounted between the rocker assembly and a tensioning wheel, the teeth panels slide and the positioning panel swings to adjust engaging surfaces and engaging forces between the teeth panels and the wrapping strap according to thickness of the wrapping strap. Thus the wrapping strap is able to securely wrap around the goods and is not scratched.

Abstract: A rocker assembly of a strapping machine has a rocker having a seat, a positioning panel mounted on the seat and being able to swing, and two teeth panels slidably mounted on the positioning panel. When a fixed end and a tightening end of a wrapping strap are mounted between the rocker assembly and a tensioning wheel, the teeth panels slide and the positioning panel swings to adjust engaging surfaces and engaging forces between the teeth panels and the wrapping strap according to thickness of the wrapping strap. Thus the wrapping strap is able to securely wrap around the goods and is not scratched.

Abstract: A positive/reverse rotation control device comprises a shaft and at least two one-way bearings, wherein the shaft pierces simultaneously through axial apertures of the two bearing, and the two one-way bearings are mounted in opposite directions. Thus, with the shaft rotating positively (e.g., clockwise), the first bearing is to rotate positively (clockwise), and the gear assembly or tooth gage belt pivotally jointed to the first one-way bearing is to be brought to work, whereas the second one-way bearing stays still; when the shaft rotates reversely (e.g., counter clockwise), the second one-way bearing is then to be brought to rotate reversely (counter clockwise), and thus bringing the gear assembly or tooth gage belt pivotally connected to the second one-way bearing to work, whereas the first one-way bearing stays still.

Abstract: An improved compact disk storage compartment including a hollow compartment body for accommodating a plurality of compact disks, a front cover for closing the compartment body and having a plurality of outlets for passage of the compact disks, a handle pivotally disposed at one side of the compartment body and turnable about a determined angle for pushing out a selected compact disk; and an indicating element capable of displacing along one side of the compartment body and the front side of the front cover to indicate the position of the selected compact disk. The handle may synchronously displace with the indicating element to the position of the selected compact disk so that, when the handle is turned, the selected compact disk may be pushed out of the corresponding outlet.

Abstract: A portable article strapping apparatus including a strap take-up mechanism for stretching the thermoplastic strap when the thermoplastic strap is wound around the article, a welding and cutting mechanism controlled to weld the overlapped part of the thermoplastic strap and to cut off the welded part from the thermoplastic strap, a suspension mechanism controlled to move the welding and cutting mechanism and the strap take-up mechanism between the action (operative) position and the stop (non-operative) position, and a base frame for the positioning of the aforesaid mechanisms.