专利名称：Automatic trailer hitch system
发明人：Yvonne H. DeRoule,Nanette Y. Poncini 申请号：US08/115982
申请日：19930901奥丁是什么神
公开号：US05580076A
因为所以造句一年级
公开日：
19961203
英雄联盟飞机
专利内容由知识产权出版社提供心理不健康的表现
摘要：A fully integrated, three-stage automatic weight distributing hitching system for a trailer and towing vehicle which utilizes a funnel- shaped receiver system (100), a head asmbly (D) with elongated shank (160), spring bars (C) and chains (B), and a motorized electromechanical screw- driven piston device (382). The receiver, mounted on the Pear of the towing vehicle, is equipped with spring loaded dogs (140) which drop into machined recess (240) of the shank when shank is inrted into the receiver, locking the shank in place and creating a cure coupling of the trailer and the towing vehicle. Solenoids (120) are affixed to the outside of the receiver and, when activated, will retract the spring-loaded dogs from the shank, and allow for uncoupling. The forward end of the receiver is fitted with a male portion of an electrical plug (180). The pivotable head asmbly with ball (E) and shank extends from the trailer tongue (A). A tunnel (170) has been machined out along the length of the shank to hou a cord (280) and a female portion of an electrical plug (220) which mates with the male plug in the receiver when inrted, and provides instant automatic connection of the electrical system between the trailer and the towing vehicle. The piston device is transverly mounted on the trailer tongue. Triangular cams (366) affixed to the ends of the piston device, cam support brackets (364) mounting brackets (350), and draw chains (B) produce tension and load-transferring
小孩不吃饭怎么办建国大业的观后感capabilities of the spring bars when cams are rotated upward. The cams, when rotated downward, relea the tension on the bars.
申请人：DEROULE; YVONNE H.,PONCINI; NANETTE Y.
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