| 摘要 |
A fuel delivery pump with a register having cost and volume counters for registering the cost and volume of each fuel delivery, separate rotary drive trains to the cost and volume counters, and an anti-backlash device associated with each rotary drive train to remove inertia overtravel of the counters upon termination of a fuel delivery. Each anti-backlash device comprises a drum and a helical coil spring surrounding the drum having a multiple-coil friction section with each helical coil in frictional engagement with the drum and a multiple-coil torsion spring section adapted to be torsionally loaded during the delivery of fuel and to rotate the rotary drive train backwards to remove any inertia overtravel at the termination of a fuel delivery. |
