Abstract: A combination touch-sensitive screen stylus structurally designed for notebook computers, personal digital assistants., and other devices equipped with touch-sensitive screens that is comprised of a pointed cover, an outer barrel, an inner barrel, a end sleeve, and an end cover. The pointed cover is sleeved over the front extremity of the outer barrel and has a rubber tip embedded in its front extremity. The outer barrel is sleeved onto the front of the inner barrel and has a hard writing tip disposed in its front end. The inner barrel contains a pen refill cartridge that extends to its anterior section, with the end sleeve and the end cover fitted onto the rear extremity of the inner barrel. The end cover has a reset pin extending from its front end. As such, the combination touch-sensitive screen stylus of the present invention is equipped with a soft rubber tip, a hard writing tip, a pen, and a reset pin that are utilized as required by the user.

Abstract: A pressure-sensed ink-filled pen comprises at least a pen tube, a valve, a filler seat and a filler. An ink outlet is formed within the front portion of the pen tube. An U-shape valve made of a relatively soft material is mounted in front of the ink outlet. A filler seat embedding a filler at the front end thereof is received in a flexible relation within the front portion of the pen tube, allowing a longitudinal movement. By pressing the filler and the filler seat at one end to cause another end to open the valve, a pressure-sensed ink-filled pen with proper ink supply is formed.

Abstract: In a pen having a constant ink supplying device, the inner wall of the front end of the filler is installed sequentially with a barrel, a plug, a valve, a nib holder and a nib. The plug has a channel for feeding ink through the control of a ball. The front end of the plug is installed with a valve. A cavity for storing ink is installed between the valve and the plug. The nib is inserted into the nib holder. The front end of the filler has a support and an ink inlet. When writing, the nib is pressed and moves so that the support at the front end of the nib holder will push the valve and supply ink to the nib.

Abstract: An ink chamber pressure enhancing control device, which includes a valve block mounted in the barrel of a writing instrument above an ink chamber, a cap axially movably mounted in the valve block above a valve port in the valve block, the cap having an air inlet, a piston supported on a spring member above the ink chamber in the barrel, wherein the piston is forced upwards by the spring member to close the valve port, enabling an air chamber to be formed within the cap and the valve block above the valve port, and from the air inlet at the cap and the valve port is forced into the ink chamber in the writing instrument when the cap is depressed.

Abstract: A pen cap for closing on a ball-point pen to prevent ink leakage, the pen cap including a cap body, a sealing cap covered on the cap body, and a ball valve mounted inside the cap body within the sealing cap and moved between inside ribs in the cap body and inside ribs in the sealing cap. Closing the pen cap on the pen causes excessive air to pass through an air passage formed by gaps among the inside ribs to the outside of the pen cap via an exhaust hole on the sealing cap, and the air passage is closed when the writing tip of the pen is engaged into a tapered hole on one cylindrical rod projecting from the ball valve.

Abstract: A writing apparatus which includes a pen holder holding an ink, a pen socket fastened to an open end of the pen holder and holding a sponge and an absorptive writing tip, an ink feeding valve assembly mounted in the pen holder and adapted to feed the ink to the sponge and the absorptive writing tip, and a steel ball movable in the ink inside the pen holder, the steel ball being movable by the pressure of the ink to close off a tapered rear opening on the ink feeding valve assembly and to stop the ink from passing to the inside of the ink feeding valve assembly when the pen holder is held in a writing position, and the steel ball being movable away from the tapered rear opening on the ink feeding valve assembly for permitting the ink to pass from the pen holder to the inside of the ink feeding valve assembly when the pen holder is placed in a horizontal position.

Abstract: A disc holder assembly including front and back cartridges defining flat outer surfaces of the assembly and one or more intermediate cartridges detachably and pivotably secured to the front and back cartridges or to each other to permit the insertion into or removal from each intermediate cartridge of a floppy diskette or compact disc when the assembly is pivoted into an open position forming a cylindrical sector.