Abstract: A foldable mobile telephone includes a first housing (10), a second housing (20), and a connecting unit (30). The connecting unit includes a first connecting block (304), a second connecting block (306), and a hinge (302). The first connecting block and the second connecting block are coupled together via the hinge. A flexible cable to establish electrical connection between the first and second housings is incorporated in the hinge. Two electrical connectors are associated with the first and second connecting blocks respectively. The electrical connectors are electrically connected with each other via the flexible cable. The connecting unit is movably connected with the first and second housings. The first housing is connected with the first connecting block. The second housing is connected with the second connecting block. The first housing is pivotable about the second housing via the hinge at either of two sides of the foldable mobile telephone.

Abstract: A hinge mechanism for joining a cover (5) to a main housing (4) of a foldable radiotelephone includes a rotation assembly (1). The rotation assembly includes a hollow connecting member formed by two casings (13) each having two slots (131), two shafts (12), and an elastic member (11) with two end hooks (111), the elastic member being received in the connecting member. The shafts are received through the hooks and through holes cooperatively formed by the slots, and are engaged in the cover and the main housing. The rotation assembly thus pivotably connects the cover to the main housing. The shafts are slidable along the holes. When the cover is manually opened, the shafts slide and stretch the elastic member. When the cover reaches a predetermined angle, the elastic member rebounds and drives the shafts to slide in opposite directions, whereby the cover is automatically further opened.

Abstract: A mobile telephone includes a main body (20) and a keypad (30). The keypad is mounted on the main body. The keypad is rotatable relative to an axis that is substantially perpendicular to the main body. The main body and the keypad are interconnected by means of a shaft (322) that is arranged along the axis. The keypad includes a spring-loaded ball (326) that is spaced apart from the shaft a distance. The main body defines a segmentary rounded guiding shallow groove (25) receiving a portion of the ball. The keypad is movable between a first position where the ball is located in a first end of the guiding groove and a second position where the ball is located in a second opposite end of the guiding groove.

Abstract: A foldable mobile telephone includes a first housing (10), a second housing (20), and a connecting unit (30). The connecting unit includes a first connecting block (304), a second connecting block (306), and a hinge (302). The first connecting block and the second connecting block are coupled together via the hinge. A flexible cable to establish electrical connection between the first and second housings is incorporated in the hinge. Two electrical connectors are associated with the first and second connecting blocks respectively. The electrical connectors are electrically connected with each other via the flexible cable. The connecting unit is movably connected with the first and second housings. The first housing is connected with the first connecting block. The second housing is connected with the second connecting block. The first housing is pivotable about the second housing via the hinge at either of two sides of the foldable mobile telephone.

Abstract: A foldable mobile telephone includes a first housing (10), a second housing (20), a connecting unit (30) and two turning shafts (40). The connecting unit includes a first connecting block (304), a second connecting block (306) and a hinge (302). The first connecting block and the second connecting block are coupled together via the hinge. The connecting unit is connected with the first and second housings and through the turning shafts. The first housing is connected with the first connecting block. The second housing is connected with the second connecting block. The first housing is pivotable about the second housing via the hinge at either of two sides of the foldable mobile telephone. The connecting unit can turn relative to the first and second housings through the turning shafts. Therefore, the foldable mobile telephone can be opened breadthwise or lengthwise as desired for improved operability and convenience.

Abstract: A hinge mechanism for joining a cover (5) to a main housing (4) of a foldable radiotelephone includes a rotation assembly (1). The rotation assembly includes a hollow connecting member formed by two casings (13) each having two slots (131), two shafts (12), and an elastic member (11) with two end hooks (111), the elastic member being received in the connecting member. The shafts are received through the hooks and through holes cooperatively formed by the slots, and are engaged in the cover and the main housing. The rotation assembly thus pivotably connects the cover to the main housing. The shafts are slidable along the holes. When the cover is manually opened, the shafts slide and stretch the elastic member. When the cover reaches a predetermined angle, the elastic member rebounds and drives the shafts to slide in opposite directions, whereby the cover is automatically further opened.

Abstract: The present disclosure includes a method of plasma etching a trench having rounded top corners in a silicon substrate. One embodiment includes the following general steps: a) providing a semiconductor structure comprising a hard masking layer, overlying a silicon substrate; b) plasma etching through said hard masking layer and any additional underlying layers overlying said silicon substrate using at least one plasma feed gas which does not provide polymer deposition on surfaces of said semiconductor structure during etching; where said plasma etching exposes a face of said silicon substrate; and c) plasma etching at least a first portion of a trench into said silicon substrate using reactive species generated from a feed gas comprising a source of fluorine, a source of carbon, a source of hydrogen, and a source of high energy species which provide physical bombardment of said silicon substrate.