| 摘要 |
PCT No. PCT/DK90/00102 Sec. 371 Date Oct. 18, 1991 Sec. 102(e) Date Oct. 18, 1991 PCT Filed Apr. 18, 1990 PCT Pub. No. WO90/12721 PCT Pub. Date Nov. 1, 1990.In a wheel and brake device for a transportation vehicle with pivotal wheels, a particularly simple brake operation may be achieved by placing a brake activating structure at each end of the vehicle and connecting it to a brake lever. The device comprises only one pedal at opposite ends. The pedals are arranged to be activated in only one direction irrespective of whether a braking or a releasing operation is to be performed. Each pedal is connected to a swinglebar by brake levers, the swinglebar also being connected to a cam follower. The cam follower runs along a cam track defining two fixed resting positions for the cam follower. In one of the resting positions, tabs on a brake block will engage with teeth firmly connected to the wheels. |
