专利名称：Vehicle leveling system
发明人：Robert H. Schneider,Jon D. Jacobs 申请号：US07/782977
申请日：19911024
公开号：US05176391A
公开日：
19930105
专利内容由知识产权出版社提供
retractable
摘要：A system for leveling a vehicle, such as a recreational vehicle, includes three extendable and retractable fluid-operated jacks. The jacks are spring-biased to their retracted position. Supply of hydraulic fluid under pressure extends the jacks, and the jacks are retracted by relieving the supply of hydraulic fluid pressure to the jacks to allow the springs to expel fluid from the jacks. A number of unique aspects are incorporated in the leveling system for providing highly advantageous construction, operation and installation.
申请人：VERSA TECHNOLOGIES, INC.
代理机构：Andrus, Sceales, Starke & Sawall
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