초록 ▼

A tandem adapter frame that attaches to the back of a single-rider bicycle, transforming the bicycle into a tandem bicycle. The rear wheel of the single-rider bicycle is removed from the bicycle and installed on the back end of the adapter frame. The adapter frame is attached to the single-rider bic

A tandem adapter frame that attaches to the back of a single-rider bicycle, transforming the bicycle into a tandem bicycle. The rear wheel of the single-rider bicycle is removed from the bicycle and installed on the back end of the adapter frame. The adapter frame is attached to the single-rider bicycle at the seat post and the rear dropouts, resulting in a rigid 3-point connection. This transforms the single-rider bicycle into a rigid frame, two wheel, tandem bicycle with a rider in front and a rider in back. Both riders have pedals. An adapter axle assembly with sprockets on the lower front of the adapter frame serves two functions. It easily attaches between the rear dropouts of the single-rider bicycle using a standard axle and quick-release, and it transmits drive power to the rear crank without modifying the drive chain of the single-rider bicycle.

대표청구항 ▼

A tandem adapter frame that attaches to the back of a single-rider bicycle, transforming the bicycle into a tandem bicycle. The rear wheel of the single-rider bicycle is removed from the bicycle and installed on the back end of the adapter frame. The adapter frame is attached to the single-rider bic

A tandem adapter frame that attaches to the back of a single-rider bicycle, transforming the bicycle into a tandem bicycle. The rear wheel of the single-rider bicycle is removed from the bicycle and installed on the back end of the adapter frame. The adapter frame is attached to the single-rider bicycle at the seat post and the rear dropouts, resulting in a rigid 3-point connection. This transforms the single-rider bicycle into a rigid frame, two wheel, tandem bicycle with a rider in front and a rider in back. Both riders have pedals. An adapter axle assembly with sprockets on the lower front of the adapter frame serves two functions. It easily attaches between the rear dropouts of the single-rider bicycle using a standard axle and quick-release, and it transmits drive power to the rear crank without modifying the drive chain of the single-rider bicycle. 2. The printing unit according to claim 1, wherein said holding device is a gripper system. 3. The printing unit according to claim 2, wherein said gripper system is opened when said gripper system is in said interior of said transport device. 4. The printing unit according to claim 1, comprising a cam mechanism assigned to said holding device for moving said holding device into said interior of said transport device. 5. The printing unit according to claim 1, wherein said transport device includes a suction device for sucking up the print carrier sheet. 6. The printing unit according to claim 5, wherein: said transport device has a sheet bearing surface; and said suction device has suction orifices that are arranged in rows and that are formed in said sheet bearing surface of said transport device. 7. The printing unit according to claim 5, comprising a suction-air source connected to said suction device. 8. The printing unit according to claim 7, wherein: said transport device has a sheet bearing surface; and said suction device has suction orifices that are arranged in rows and that are formed in said sheet bearing surface of said transport device. 9. The printing unit according to claim 1, wherein said transport device is a transport cylinder. 10. The printing unit according to claim 1, wherein said printing head is an ink-jet printing head. 11. A sheet-fed rotary printing machine, comprising: at least one first printing unit having an impression cylinder and cylinder selected from the group consisting of a rubber-blanket cylinder and a printing-form cylinder; and a second printing unit including: a rotatably mounted transport device for transporting a print carrier sheet, and a non-impact-printing printing head for printing the print carrier sheet, said printing head aligned with said transport device, said transport device formed with an interior, said transport device including a holding device for holding the print carrier sheet, and said holding device adjustably mounted to enable movement of said holding device into said interior of said transport device.