| 摘要 |
1480974 Invalid cycles S A L KARLSSON 25 April 1975 [30 April 1974] 17297/75 Heading B7E A cycle for use by invalids to exercise weak leg muscles comprises a frame having a lower substantially horizontal member 2 and an upper member 3 parallel to the member 2 supported on the member 2 by posts 10, 11 extending from the member 2, wheels 17, 18 supporting the frame, a steerable wheel 29 carried by a steering column 31 journalled to the frame, a drive wheel 25 mounted on the frame, pedals 26 connected to the wheel 25 whereby the latter may be rotated to propel the cycle, and a saddle 20 located over the drive wheel 25. The upper and lower frame members may be substantially U-shaped as shown, the upper member 3 being provided with padding 15, and a belt 16 for fastening an invalid in the cycle. The saddle 20 may be carried by a rod slidably mounted on a further vertical post 19 extending between the lower member 2 and a bracket 33 projecting from the upper member 3. The posts 10, 11, 19 and the column 31 may be telescopic so as to be height adjustable, and the wheels 25, 29 may be resiliently mounted. The post 19 may be replaced by a hollow square section column 19<SP>1</SP>, Fig. 3, within which run rollers 36, 37 carried by the rod mounting the saddle 20<SP>1</SP>, the rollers being movable to adjust the height of the saddle by means of a screw 39 within the column 19<SP>1</SP> driven by a rotary crank and gearing 40, 41 and engaging a nut 38 fixed to the saddle mounting rod. |
