Abstract: A combination assembly includes a string and an adjusting and fastening device. The adjusting and fastening device is a hollow cube. The cube includes two lateral holes and a bottom formed respectively at two lateral sides thereof and a bottom side thereof for communication with inside space thereof and outside. The string is inserted through the lateral and bottom holes to be combined with the cube, having two ends exposed outside the bottom hole. While applied to a shoelace or a chinstrap or other condition requiring tightening/loosening, the combination assembly are good at length adjustment, fixture, and appearance of the string as well as convenient operation thereof.

Abstract: A strap-length-adjusting device is composed of a main body, a strap body, and at least one partition. The main body includes a vertical through hole and at least one horizontal hole, which communicate with each other. The strap body is overlapped itself to run through the vertical through hole and has two parts pulled out of two ends of the horizontal through hole. The partition that is identical to the horizontal through hole in number is mounted on the main body to form two fenders at two ends of the horizontal through hole. The two parts of the strap body are retarded respectively by the two fenders from being pulled back inside the main body. Accordingly, the two parts of the strap body are pulled out of the horizontal through hole to adjust the length of the strap body.

Abstract: A carrying assembly for bottles or the like includes a generally C-shaped clamping element and a carrying strap. The clamping element is provided with an opening portion that is less than one half of a circle with lugs extending outwardly from both sides thereof. The lugs are each provided with an elongated slot. The two ends of the carrying strap may pass through the elongated slots and be secured in position to facilitate carrying of a bottle. The carrying strap and the lugs may also be fastened together by adhering the ends of the carrying strap to the lugs using ultrasonic waves. The distal ends or sides of the lugs may be provided with a cover plate that has a bottom portion at least partly connected to the lugs and a notch at an upper side for receiving the ends of the carrying strap. Ultrasonic waves are then used to secure the cover plates, the carrying strap and the lugs as a whole.

Abstract: The c-clamp includes a C-shaped body and a screw which can adjustably penetrate through an end of the C-shaped body to clamp or release an object placed between a free end of the screw and the other end of the C-shaped body, a controlling member mounted pivotally with respect to the C-shaped body and provided with a threaded surface which can be rotated pivotally to engage or disengage with the screw, whereby one can determine a fast operation mode or a normal operation mode of the c-clamp.