| 摘要 |
<p>The present empty/ load device (10) includes a lock-out mechanism (80) to prevent proportioning of the inlet (20) pressure to the outlet (22) when activated. According to the first invention, the lock-out mechanism (80) includes a lock-out valve (90), in a lock-out position [Figure 4], pneumatically preventing proportioning of the inlet (20) pressure to the outlet (22). A first spring (100) biases the lock-out valve (90) from the lock-out position [Figure 4]. A detent (110,116) engages the lock-out valve (90) and holding the lock-out valve (90) in the lock-out position [Figure 4] According to the second invention, the lock-out mechanism (80) includes a lock-out valve (90) which has an initial position [Figure 3] allowing the proportioning of the inlet (20) pressure to the outlet (22) and a lock-out position [Figure 4] pneumatically preventing proportioning of the inlet (20) pressure to the outlet (22).</p> |
