Abstract: A duplex scanning apparatus includes an automatic document feeder and a flatbed image scanner. The automatic document feeder includes a document feeder case, a scanning glass plate and a first light source. The flatbed image scanner includes a scanner case, a glass platform, a second light source and a scanning module. The scanning glass plate and the first light source are included in the automatic document feeder of the duplex scanning apparatus, so that the scanning operation is performed in the automatic document feeder.

Abstract: A duplex scanning apparatus includes an automatic document feeder and a flatbed image scanner. The automatic document feeder includes a document feeder case, a scanning glass plate and a first light source. The flatbed image scanner includes a scanner case, a glass platform, a second light source and a scanning module. The scanning glass plate and the first light source are included in the automatic document feeder of the duplex scanning apparatus, so that the scanning operation is performed in the automatic document feeder.

Abstract: A brake system for a bicycle includes a frame with two blocks received therein side by side, each of the two blocks having a protrusion extending from the rear end thereof so that a bridge member is mounted to the two protrusions. Two cables each have one end thereof connected to the respective block and the other end thereof extends through the top of the frame and is connected to the respective brake handle. A rear brake cable connected with the rear brake mechanism is connected to the bridge member and a front brake cable connected with the front brake mechanism movably extends between the two blocks. When either one of the first cable or the second cable is pulled, one of the blocks and the bridge member are moved so that the rear brake mechanism is first operated.

Abstract: A device for controlling the operational sequence of brake assemblies for bicycles includes a box within which a frame is slidably received, a first member and a second member juxtaposedly and slidably received in the frame, two cables extending from two brake levers respectively connecting to the two members respectively, each of the two members having a recess for receiving a barrel end of a front brake cable extending from a front brake assembly when the two recesses are not in alignment with each other by grasping eitherone of the brake levers, a drop recess defined below the corresponding recess in each of the members so that a barrel end of a rear brake cable is received in a space formed by the two drop recesses when the two brake levers are grasped or released simultaneously. Accordingly, whichever brake lever is grasped, the rear brake assembly is engaged first.

Abstract: A shock absorbing device includes a bracket having a lower portion pivotally engaged with one side portion of a base frame. A supporting base has one end portion pivotally engaged with an upper portion of the bracket. A shock absorbing block is received in the bracket and has an upper portion abutting on an underside of a mediate portion of the supporting base.

Abstract: A tension device is secured to a derailleur system of a bicycle having a frame pivotally coupled to the bicycle for supporting a sprocket and for engaging with a chain. The tension device includes an arm having one end secured to the bicycle and having the other end secured to an auxiliary spring. A block is secured to the frame and has an extension secured to the other end of the spring. The spring may bias the frame and may tension the frame and the chain for preventing the chain from disengaging from the derailleur system.