| http://www.w3.org/ns/prov#value | - Crank mechanisms of this type are inexpensive and, in addition, relatively immune to disturbance, so that a long service life can be expected.According to one embodiment, the piston-cylinder unit is a member of a multi-part lever mechanism, such as the piston rod of the crank mechanism.An especially simple crank mechanism has merely a linkage, a crank, and the thrust rod.
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