Patent ID: 8593437

Claim:
A stylus, comprising: a stylus member comprising: a first housing defining a first receptacle therethrough; a stylus body assembly slidably and non-rotatably accommodated in the first receptacle of the first housing, the stylus body assembly including a first threaded hole defined therethrough; a first retaining element mounted in the first housing and including a first tube and a first flange positioned at an inner surface of the first tube; and a pen member comprising: a second housing defining a second receptacle therethrough; a pen assembly slidably and non-rotatably accommodated in the second receptacle of the second housing, the pen assembly defining a second threaded hole therethrough; and a shaft rotatably passing through the first housing and the second housing, the shaft including a first threaded portion engaging with the first threaded hole such that rotation of the shaft relative to the first housing causes the stylus body assembly to slide relative to the first housing to extend out of or retract into the first housing, depending upon the direction of rotation of the shaft, and the shaft further including a second threaded portion engaging with the second threaded hole and rotation of the shaft relative to the second housing causes the pen assembly to slide relative to the second housing to extend out of or retract into the second housing, depending upon the direction of rotation of the shaft; the shaft further including an operating portion positioned between the first threaded portion and the second threaded portion, and a first protrusion protruding between the first threaded portion and the operating portion; wherein the first flange is held between the operating portion and the first protrusions, thereby preventing the shaft and the first housing from separating.