公开(公告)号：US5791676A

公开(公告)日：1998-08-11

申请号：US698818

申请日：1996-08-16

Applicant: Rodney D. Jones

Inventor： Rodney D. Jones

IPC: B60D1/36 ,  B60D1/58 ,  G01C9/24

CPC classification number: B60D1/36 ,  B60D1/58

Abstract: A hook-up memory gauge (10), is a convenient aid in the vertical hitching alignment of a trailer with a tow vehicle. The hook-up gauge is mounted on the side of the trailer near the support legs or support stand so as to provide a settable reminder of the trailer fore-and-aft tilt angle at vehicle disengagement. The device comprises an arcuate spirit vial (38) with a small air bubble, and a squeeze-and-slide pointer (24) for recording tilt angle. For this embodiment, the hook-up gauge is capable of measuring five degrees of tilt angle in either direction. A glass or plastic spirit vial is fastened in a cradle which is part of a mounting base of thermosettable material or metal. The squeeze pointer is slidably mounted in arcuate guide slots on either side of the spirit vial. A slight clearance from the vial is provided so it can easily be moved in the elongate direction for centering over the air bubble. At hitch disengagement, the squeeze pointer is centered over the air bubble and released, resulting in a fixed position of the squeeze pointer to provide a convenient reminder of the particular tilt angle setting. At re-engagement, the squeeze pointer serves as a reference mark. Re-alignment and centering of the air bubble with the squeeze pointer, by raising or lowering the trailer support stand or legs, results in the correct angle for re-hitching.

Abstract translation: 挂钩记忆仪（10）是拖车与牵引车辆的垂直连接对齐方便的辅助工具。 挂钩规安装在靠近支撑腿或支撑架的拖车侧面，以便在车辆分离时提供拖车前后倾斜角度的可设定提醒。 该装置包括具有小气泡的弧形精油瓶（38）和用于记录倾斜角的挤压滑动指针（24）。 对于该实施例，连接测量仪能够在任一方向上测量五度的倾斜角。 一个玻璃或塑料小瓶被固定在一个支架中，这是一个可热固材料或金属的安装基座的一部分。 挤压指针可滑动地安装在精液瓶两侧的弓形引导槽中。 提供与小瓶的微小间隙，使得其可以容易地在细长方向上移动以使其对准气泡。 在牵引脱开时，挤压指针位于气泡的中心并释放，导致挤压指针的固定位置，以提供特定倾斜角度设置的方便提醒。 在重新接合时，挤压指针作为参考标记。 使用挤压指针重新对准和对中气泡，通过升高或降低拖车支撑架或支腿，可以获得正确的角度来重新连接。