| 摘要 |
<p>JET DRIVE APPARATUS WITH NON-STEERING JET REVERSE DEFLECTOR In a jet drive for a boat, a jet pump is secured to the boat transom and terminates in a pivotally mounted steering deflector for lateral movement of the jet. The deflector is mounted on a vertical steering axis within a gimbal ring which is pivotally mounted on a horizontal trim pivot means secured to the pump housing. A trim linkage is connected to position the gimbal ring for trimming of the nozzle. A reversing gate is pivotally mounted on the same trim pivot means and connected by a mechanical coupling linkage with swivel and pivoting joints to the gimbal ring. The linkage includes a shift shaft which is rotatable about an axis perpendicular to the pivot axis and which is axially movable with movement of the gimbal ring. The inner end of the shaft is square and slidably mounted in a square opening in a rotatable input lever. Rotation of the lever rotates the shaft and actuates the coupling linkage to pivot and place the gate in a preset drive or shift position. The trim linkage causes trim movement of the ring which through the coupling linkage correspondingly directly positions the gate and with the shaft sliding in the input lever to hold the preset shift position with changes in trim. The shaft is rotatably mounted in a rotatable steering tube and extends outwardly from the opposite ends. The outer end of the tube includes a flexible tube with a shaft seal and bearing supporting the shaft and permitting limited flexing of the shaft within the tube during trim pivoting of the gimbal ring.</p> |
