Abstract: A key switch fabrication method including the steps of: i) molding a rubber pad from silicone resin, and making a rubber key stitch body from the rubber pad by stamping; ii) printing the desired letter or pattern on the top side (10) of the rubber key switch body (1) thus obtained, then drying the printed key switch body 1 by baking; iii) adhering a liquid silicone rubber on the key switch body over the printing thereof by spot glueing to form a transparent key cap; vi) heating the key switch thus obtained from step iii) in a baking oven at 60.degree. C. for 5 minutes and then heating it at 120.degree. C. for 10 minutes to harden the key cap; and v) examining the quality of the finished key pad.

Abstract: A lens assembly with adjustable focusing arrangement generally comprises a lens assembly which includes a supporting barrel having the lens unit disposed therein. The outer wall of the supporting barrel is slidably disposed with an adjusting knob. A barrel housing which is defined by a stationary housing and a movable housing is provided and the lens assembly, the supporting barrel and the adjusting knob are received within the barrel housing with its receiving chamber. Both sides of the barrel housing are provided with cutout for readily accessing to the adjusting knob. An aperture is provided at the front of the receiving chamber. The inner wall of the receiving chamber of the barrel housing is provided with a pair of guiding rails extending lengthwise which can be slidably engaged with the guiding grooves of the supporting barrel. The focus can be readily attained by rotating the adjusting knob. The barrel housing is provided with a locking screw to fix the focus attained.

Abstract: A touch control type cursor control device which includes a bottom shell covered with a cover frame to hold a circuit board, a digitizer mounted within the cover frame and connected to the circuit board, a left key switch and a right key switch mounted on the bottom shell and disposed at two opposite lateral sides relative to the digitizer and connected to the circuit board, a front left key switch and a front right key switch disposed in front of the digitizer and connected to the circuit board, and a connecting line extending from the circuit board for connection to the computer system.

Abstract: This invention relates to a method for coating a polyurethane on to a silicon rubber key board. The so constructed key board has excellent wearing-resistance. The user may enjoy an excellent feeling of contact. A silane primer is applied and cured before application of the polyurethane.

Abstract: A key switch includes a rubber key body mounted within a key switch hole on a key pad device above a circuit board thereof, and a key cap fastened to the rubber key body at the top and depressed to move the rubber key body downward in triggering a contact on the circuit board, wherein the key cap is made from a plastic convex lens having a convex top wall and a plain bottom wall, the plain bottom wall having a light-blocking area and a light-penetrable area, the light-penetrable area being shown in the form of a pattern; the rubber key body is molded from a vulcanized rubber sealed to the plain bottom wall of the key cap through a heat sealing process. Three layers of ink are disposed between the key body and the key cap.

Abstract: A microphone mounting structure including a keyboard having defining a horizontal bottom chamber near the rear side and a plurality of equally spaced vertical locating grooves inside the horizontal bottom chamber, a slide carrier slidably mounted in the horizontal bottom chamber of the keyboard, the slide carrier having a pair of vertical locating ribs detachably forced into engagement with the vertical locating grooves of the keyboard, and a supporting block at the front side, the supporting block having a microphone holder mounting hole and two locating holes spaced at an angle around the microphone holder mounting hole, a microphone holder having a mounting rod coupled to the microphone holder mounting hole of the supporting block of the slide carrier, a locating rib forced into engagement with one locating hole of the supporting block of the slide carrier, and a plug hole spaced from the mounting rod at right angles, and a microphone mounted in the plug hole of the microphone holder.

Abstract: A feed roll assembly which includes an axle installed in for example a fax machine and having a noncircular extension rod at one end, a roll fixedly mounted around the axle in the middle and turned by it to delivery inserted sheet of paper, a coupling wheel coupled to the non-circular extension rod of the axle and turned with it, the coupling wheel having an outward flange at one end and a plurality of wedge-like grooves spaced around the periphery adjacent to the outward flange, a transmission gear revolvably mounted around the non-circular extension rod of the axle, and a spring movably mounted around the coupling wheel and stopped between the transmission gear and the outward flange of the coupling wheel and having a rear end moved in an arched groove in the transmission gear and a front end moved relative to the radially spaced wedge-like grooves of the coupling wheel, wherein the spring is compressed and coupled to the coupling wheel when the transmission gear is rotated forwards, thereby causing the cou

Abstract: A keyboard stand mounting structure including a keyboard shell, which a big recessed hole at the back side and two small recessed hole spaced by the big recessed hole, two small stands respectively pivoted to the back side of the keyboard shell and turned between the collapsed position received in the small recessed hole and the operative position to support the keyboard shell in a first tilted position, and a big stand pivoted to the back side of the keyboard shell and turned between the collapsed position received in the big recessed hole and the operative position to support the keyboard in a second tilted position.

Abstract: A scanner housing including a bottom shell, which holds a scanner base, a scanner cover shell covered on the bottom shell over the scanner base, a dust cover covered on the scanner cover shell and defining with it an upper gap, which serves as the output port of the scanner base, and a lower gap, which serves as the input port of the scanner base, and a monitor support integrally extended from the scanner cover shell at the back for supporting a monitor.

Abstract: A contact image sensor and roller mounting structure including two end supports, a contact image sensor fixedly secured between the end supports, two roller holders respectively mounted on the end supports and turned about an axis, a roller connected between the roller holder and disposed in contact with the contact image sensor, a top cover connected between the roller holders and covered over the roller, and two torsional springs respectively mounted on the end supports to hold the roller holder in place, whereby opening the top cover causes the roller holders to move the roller away from the contact image sensor; closing the top cover causes the roller holders to move the roller back into contact with the contact image sensor.