发明名称 Manually operated trailer hitch with extendable swinging boom
摘要 A trailer hitch has a boom which is slideable from a drawn in position to different extended positions and which independently of its extendability is swingable from a centered position to different sideways angled hook up positions. The trailer hitch is hand operated to pull the boom inwardly from any one of the different extended positions to the drawn in position with a manual pusher for pushing the boom towards the centered position. It further includes safety stops for preventing any outward swinging of the boom while the boom is being drawn inwardly.
申请公布号 US5580088(A) 申请公布日期 1996.12.03
申请号 US19950539301 申请日期 1995.10.04
申请人 GRIFFITH, THOMAS 发明人 GRIFFITH, THOMAS
分类号 B60D1/40;(IPC1-7):B60D1/06;B60D1/42 主分类号 B60D1/40
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