Rack and pinion combinations are often used as part of a simple linear actuator where the rotation of a shaft powered by hand or by a motor is converted to linear motion.
Rack and pinion door drive system.
This system consists of a standard range of straight spur circumferential pitch and helical racks and pinions.
United states patent 6257303.
A flexible rack able to travel on a curved locus is preferred.
The rack and pinion system is the primary building block of a linear axis drive.
A flexible rack able to travel on a curved locus is preferred.
A drive for a tracked door which utilises a drive pinion which engages a tracked rack that in turn moves the door as it is moved track wise under the action of the pinion.
A flexible rack 16 able to travel on a curved locus is preferred.
This force thus torque may still be substantial and so it is common.
In fact manufacturers of linear actuators commonly offer rack and pinion drive versions and several profiled rail guide manufacturers offer integrated rack and pinion systems with the rack ground into the guide rail profile or the guide rail mounted directly on the rack.
A drive for a tracked door which utilises a drive pinion which engages a tracked rack that in turn moves the door as it is moved track wise under the action of the pinion.
Rack and pinion door drive system.