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A glider or platform rocker is a type of rocking chair that moves as a swing seat, where the entire frame consists of a seat attached to the base by means of a double-rocker four-bar linkage. The non-parallel suspension arms of the linkage cause the chair to simulate a rocking-chair motion as it swings back and forth.
"A glider is an updated version that’s designed to slide forward and backward rather than rock in an arc". See Four bar linkage, "parallelogram" linkage. Granted, not all gliders purely glide back & forth, some do "rock" and change the tilt angle. Likewise, some gliders have the four-arm mechanism mostly enclosed and are safer than a rocker.
Some mechanisms that produce reciprocating, or repeating, motion are designed to produce symmetrical motion. That is, the forward stroke of the machine moves at the same pace as the return stroke. These mechanisms, which are often referred to as in-line design, usually do work in both directions, as they exert the same force in both directions. [6]
A rocker bogie In motion - incorrectly shows chassis staying level; the chassis actually maintains the average of the two rockers Rocker bogie on Curiosity. The rocker-bogie system is the suspension arrangement developed in 1988 for use in NASA's Mars rover Sojourner, [1] [2] [3] and which has since become NASA's favored design for rovers. [4]
A rocker is a device used in laboratories for molecular and biological mixing applications. Rockers are often used in place of shakers when less aggressive mixing is required. Rockers are commonly used for staining and de-staining gels after electrophoresis , hybridization , [ 1 ] washing, blotting , [ 2 ] Cell culture [ 3 ] and gentle mixing.
The linkage consists of the frame, a crank, two grounded rockers, and two couplers all connected by pivot joints. It was developed by Joe Klann in 1994 as an expansion of Burmester curves which are used to develop four-bar double-rocker linkages such as harbor crane booms. [2] It is categorized as a modified Stephenson type III kinematic chain.
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