Abstract: A stapler includes a housing having a port for coupling to a pressurized reservoir and a casing attached to a nose piece and having a guide channel for guiding fasteners toward the nose piece. A gripping and feeding device includes a pair of arms having one end for gripping and feeding the fasteners toward the nose piece step by step. The arms each includes a shoe for engaging with the fasteners, and a holder for holding and supporting the shoe. An actuating device is slidably engaged with the arms, the actuating device includes two actuators for selectively moving the arms away from each other, and two blocks for selectively moving the arms toward each other.

Abstract: An electronic device includes a housing and a rotating button disposed on the housing. A first rotation member includes a first protrusion. A second rotation member is connected to the first rotation member in a rotatable manner. When the second rotation member is rotated, the first rotation member is rotated along with the second rotation member. A moving member is moveably disposed between the first rotation member and the second rotation member, and includes a second protrusion. The shape of the second protrusion corresponds to the shape of the first protrusion so that the moving member can be simply stable at an idle position. An elastic member is disposed between the moving member and the second rotation member.

Abstract: A power supply guide device of a computer host is provided as a connection structure between a power supply and a computer case. The power supply guide device comprises a computer case and a power supply placement device. A first guide device is provided on the horizontal plane of the computer case. A first pivotal portion and a second pivotal portion are located at the upper end and the lower end of the vertical plane of the computer case, respectively. The power supply placement device has a space for placing the power supply. A first fastening device above the power supply placement device is fastened with the first guide device. The first pivotal device and the second pivotal device are respectively connected with the first pivotal portion and the second pivotal portion so that the power supply placement device can be pivotally connected with the computer case.