ASME A17.1b-2009 pdf download.Addenda to ASME A17.1-2007/ CSA B44-07 Safety Code for Elevators and Escalators.
bumper: a device, other than an oil or spring buffer, designed to stop a descending car or counterweight beyond its normal limit of travel by absorbing the impact. cable, traveling: see traveling cable. capacity: see rated load. car-direction indicator: a visual signaling device that displays the current direction of travel. car door interlock: a device having two related and interdependent functions, which are (a) to prevent the operation of the driving machine by the normal operating device unless the car door is locked in the closed position (b) to prevent the opening of the car door from inside the car unless the car is within the landing zone and is either stopped or being stopped car door or gate electric contact: an electrical device, the function of which is to prevent operation of the driving machine by the normal operating device unless the car door or gate is in the closed position. car door or gate, power-closed: a door or gate that is closed by a door or gate power operator. car door or gate power closer: a device or assembly of devices that closes a manually opened car door or gate by power other than hand, gravity, springs, or the move- ment of the car. car, dumbwaiter, material lift: the load-carrying unit that includes a platform or transfer device and may include an enclosure and/or car frame. car, elevator: the load-carrying unit including its plat- form, car frame, enclosure, and car door or gate. car enclosure: the top and the walls of the car resting on and attached to the car platform. car frame: the supporting frame to which the car plat- form, upper and lower sets of guide shoes, car safety, and the hoisting ropes or hoisting-rope sheaves, or the plunger or cylinder of a direct-acting elevator, are attached. car frame, overslung: a car frame to which the hoisting rope fastenings or hoisting-rope sheaves are attached to the crosshead or top member of the car frame.
clearance, top counterweight: the shortest vertical dis- tance between any part of the counterweight structure and the nearest part of the overhead structure or any other obstruction when the car floor is level with the bottom terminal landing. comb, escalator and moving walk: the toothed portion of a combplate designed to mesh with a grooved step, pallet, or treadway surface. combplate, escalator and moving walk: that portion of the landing adjacent to the step, pallet, or treadway consisting of one or more plates to which the combs are fastened. compensating rope sheave switch: a device that auto- matically causes the electric power to be removed from the elevator, dumbwaiter, or material lift driving- machine motor and brake when the compensating sheave approaches its upper or lower limit of travel. compensation means: wire rope, chain, or other mechanical means used to counterbalance, or partially counterbalance, the weight of the suspension ropes. component rated pressure: the pressure to which a hydraulic component can be subjected. control, motion: that portion of a control system that governs the acceleration, speed, retardation, and stop- ping of the moving member. control, AC motor: a motion control that uses an alter- nating current motor to drive the machine. control, AC motor, DC injection: a motion control for an AC motor that produces retardation torque by injecting a DC current into either a stator winding of the motor or a separate eddy-current brake. control, single speed AC: a motion control for an AC motor that has a single synchronous speed. control, two speed AC: a motion control for an AC motor that has two different synchronous speeds by connecting the motor windings so as to obtaina different number of poles.