发明名称 Retractable handle for hand trucks or the like
摘要 A retractable handle including two parallel sleeves, a cross member connected between the sleeves at the top, and two extension rods connected in parallel and moved in and out of the sleeves, the cross member being incorporated with a spring supported pressure plate, the pressure plate having two beveled push blocks at two opposite ends, the extension rods having two spring-supported lock bolts horizontally disposed at the bottom, wherein the lock bolts are forced by the respective springs through respective locating holes on the sleeves into respective bottom notches on the cross member and stopped above the beveled push blocks to lock the retractable handle in the operative position when the extension rods are pulled out of the sleeves; the lock bolts are forced backwards from the bottom notches of the cross member into the locating holes on the sleeves, when the pressure plate is depressed against the cross member, permitting the extension rods to be moved back inside the sleeves and received in the collapsed position.
申请公布号 US5464244(A) 申请公布日期 1995.11.07
申请号 US19940328823 申请日期 1994.10.25
申请人 TSAI, JAMES 发明人 TSAI, JAMES
分类号 B62B1/12;(IPC1-7):B62B1/04 主分类号 B62B1/12
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