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(define-primitive-event (valve-at ?agent ?valve ?open-closed ?error)(event-definition (:valve_at (:valve . ?valve) (:value .?open-closed)))(event-values :bound :bound :bound :unbound))(define-rap (turn-valve-p ?agent ?valve ?open-closed ?timeout)(succeed (and (valve-position ?agent ?valve ?value ?error)(= ?value ?open-closed)))(timeout ?timeout)(method(primitive(enable (:turn_valve (:valve . ?valve) (:value 3 com palmpilot . ?open-closed))(wait-for (valve-at ?agent ?valve ?open-closed ?result):succeed (?result)) in 8cordedelectricdrill europe these tools are known as tirfor hand winches. in the us they are branded griphoists. they are also sometimes sold as scaffold hoists. this diversity indicates their astounding versatility for moving heavy things by hand. they do the work of motorized winches--haul logs, or move stuck tractors, spy kids 3 d costumes raise towers, and so on--but with the deftness of a human hand. because there is no ratchet or coil, a griphoist permits very small adjustments, unlike either 8cordedelectricdrill come-alongs or winches. the patented double-grip mechanism of the griphoist/tirfor is considered so reliable that some versions of the unit are rated by the ul to be suitable for hoisting humans--for 3 instance in 8cordedelectricdrill hoisting window-washers'' scaffolding. the standard cat 3024 engine used on the pb50 lift truck is a naturally aspirated model rated 52 hp. a turbocharged version rated 62 hp is available as an option on the pb50 and is the standard engine on the pb65. the engine package on both machines incorporates 3 an srf america heavy-duty frame-mounted 8cordedelectricdrill radiator and donaldson dual-element air cleaner. a cyclonic precleaner is also available as an option, the company said.the engine drives a bosch rexroth 3 aa10vg hydraulic pump that power the hydrostatic drive. bosch rexroth 8cordedelectricdrill gear pumps are used to power the lift and auxiliary systems. the hydrostatic drive pump incorporates an ant-stall system designed to prevent engine stalling because of overload. "the anti-stall feature reduces drive pump output when engine output cannot meet the demand," pohl explained. "this prevents the engine from bogging down and stalling. because the feature is fully automatic, it allows the operator to concentrate fully on driving the machine in rough terrain." ©2003 www.electricdrills.net. All rights reserved. |