250results about How to "Constant length" patented technology

The invention discloses a rotating shaft mechanism which comprises a rotating shaft group, fixing parts and sliding parts, wherein the rotating shaft group comprises at least two parallelly arranged rotating shafts; the fixing parts are disposed on the two sides of the rotating shaft group; and the sliding parts are used for connecting the rotating shaft group with the fixing parts and at least disposed on one side of the rotating shaft group. When the rotating shafts at the symmetric positions are close to or far away from each other, due to the action of the sliding parts, the distance between the rotating shaft group and the fixing parts changes in the length direction of the rotating shaft mechanism. According to the rotating shaft mechanism, the sliding parts and the fixing parts are additionally arranged on the basis of an original rotating shaft mechanism. The sliding parts and the fixing parts can offset the displacement change generated by the movement of the rotating shafts being close to or far away from each other, it is guaranteed that the length of the outer side of the rotating shaft mechanism is unchanged, and a flexible screen laid on the rotating shaft group and the fixing parts is not stretched or compressed. Therefore, the rotating shaft mechanism can normally cooperate with the flexible screen for use, and the damage to the flexible screen is avoided. The invention also provides an electronic product with the rotating shaft mechanism.

An adjustable socket having first and second jaw members having manually selectable sizes. An exterior drive unit and a moveable inner driver unit each having serrated interlocking teeth are positioned to either engage during wrenching, or to be disengaged for socket size manual adjustments. The opposing first and second jaw members are forced by axial rotation of a spiral cam element located on the open top end of the outer drive unit to move laterally, inward or outward, when a user pulls the inner driver unit in a first direction and rotates the inner drive unit such that the first and second jaw members are positioned to engage a selected fastener head.

In a printer provided with a sheet reversing mechanism, and which can perform printing on both faces of a sheet by a common print head, reduction of the number of parts, prevention of a transport failure, and the like are realized by reversing the sheet while the sheet is clamped by one transporting roller pair. The printer includes a first sheet path. A print head is disposed on the first sheet path to perform printing on a recording sheet. A transporting roller pair includes a first roller and a second roller, adapted to transport the recording sheet in a first direction approaching the print head (toward an outlet) and a second direction opposed to the first direction (toward an inlet). A second sheet path is branched from the first sheet path at a branching position shifted from the first roller in the second direction, extending along an outer periphery of the first roller, and joined to the first sheet path at a joining position between the transporting roller pair and the print head. A path switcher is disposed in the vicinity of the branching position so as to be placed at a first position for selecting the first sheet path and a second position for selecting the second sheet path, so that a path of the recording sheet transported in the second direction is switched to the first sheet path or the second sheet path.

An image forming apparatus includes a photoconductor, a cleaning device, and a toner transporting device. The photoconductor has a toner image formed thereon. The cleaning device removes toner remaining on the photoconductor. The toner transporting device transports the toner removed by the cleaning device. The toner transporting device includes a first toner transport path forming member, a first toner transporting member, and a length control member. The first toner transporting member is partly provided in the first toner transport path forming member, expands and contracts in a length direction thereof, and transports the toner through the first toner transport path forming member. The length control member is provided at a downstream end of the first toner transport path forming member, and is pressed against the first toner transporting member to keep a constant length of the first toner transporting member. An image forming method is also described.