| 摘要 |
<p>The invention comprises a power impact torque tool (10) that is torque-limited by a novel torque-timing device (600) that controls the amount of time that the tool motor (14) operates after the operator initiates tool (10) operation. The invention also includes the torque-timing device (600) itself and with other tools. The invention further includes the torque-timing device (600) in the form of a modular, releasably-attachable, user-adjustable control apparatus (600) for tools powered by compressable fluids. The torque-time-limiting device (600) allows the user to adjust a needle valve (300) that controls the filing of a reservoir (400) which, when full, provides the pressure required for actuating a shut-off valve (100).</p> |
