专利名称：REMOTELY OPERABLE LATCH AND LOCKING
PIN FOR A MULTI-SECTION BOOMINCLUDING A MANUAL FLY SECTION
发明人：MENTZER, William R.,BERNABE, Vincent, Jr.申请号：EP83900094.0申请日：19821022公开号：EP0093160A1公开日：19831109
摘要： A telescopic boom of a crane, hydraulically operated multi-section, comprisinga manual fly section (23) which can be extended and retracted in a safe, locked in theextended position and pinned by remote actuation of a lock plunger biased by a springand hydraulically (33) and a locking pin biased by a spring and hydraulically (52), bothmounted in a static hydraulic circuit comprising, in one embodiment a portion of
interlocking safety of a pressurized fluid circuit (Fig. 4) with a pressure-sensitive indicator(123) for indicating when the lock plunger (33) is engaged (48), and in another form, aportion of interlocking safety of an electrical switching circuit (Fig. 7) controlling thehydraulic circuit, with an indicator (159) actuated by the electrical switch (131) for indiquer when the lock plunger (33) is engaged (48). Parts of safety interlocking of thetwo circuits for cooperation lock plunger (33) and for the locking pin (52) prevent themfrom operating in a wrong sequence so that at any time one of the two committedbefore the other is disengaged.
申请人：KIDDE, INC.
地址：Park 80 West Plaza Two Box 5555 Saddle Brook, NJ 07662 US
国籍：US
代理机构：Connor, Terence Kevin
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