A rack and pinion is a pair of gears which convert rotational motion into linear motion. The circular pinion engages teeth on a flat bar - the rack. Rotational motion applied to the pinion will cause the rack to move to the side, up to the limit of its travel. Rack and pinion animation. ... Spur gears found on a piece of farm equipment. ... Illustration of a Gear train with a pinion shown. ... A sphere rotating around its axis. ...
The rack and pinion arrangement is commonly found in the steering mechanism of cars or other wheeled, steered vehicles. This arrangement provides a lesser mechanical advantage than other mechanisms such as recirculating ball, but much less backlash and greater feedback, or steering "feel". Steering is the term applied to the collection of components, linkages, etc. ... Karl Benzs Velo model (1894) - entered into the first automobile race An automobile is a wheeled passenger vehicle that carries its own motor. ... A driving wheel on a steam locomotive. ... In physics and engineering, mechanical advantage (MA) is the factor by which a mechanism multiplies the force put into it. ... Recirculating Ball is an alternate steering mechanism, commonly found in older vehicles. ... Backlash is the amount of clearance between mated gear teeth in a gear pair. ... Feedback is (generally) information about actions. ...
For rack and pinion railways see Rack railway. Track with Von Roll system rack. ...
See also
Zipper Closeup of the zipper on a pair of jeans This article is about the fastening device called zipper zip, zipper, or the acronym ZIP, see zip (disambiguation). ...
The rack and pinion is used to convert between rotary and linear motion.
Rack and pinions are commonly used in the steering system of cars to convert the rotary motion of the steering wheel to the side to side motion in the wheels.
In the rack and pinion railway a central rack between the two rails engages with a pinion on the engine allowing the train to be pulled up very steep slopes.
According to the present invention the rack and pinion gear arrangement comprises pinion gear means located at the centre mold part and including a drive gear and first and second follower gears driven off the drive gear.
According to the arrangement shown the three pinion gears are aligned along their centre axii and the two follower gears are of the same diameter with identical teeth configuration for simultaneous and corresponding opening of the two outside mold sections.
By using three pinion gears and by offsetting the follower gears to the side of the drive gear away from the free end of the first and second racks the effective length of the racks for contact with the pinion gear drive is increased thereby allowing increased opening of the two outside mold parts.
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