| http://www.w3.org/ns/prov#value | - In this position, the shear pins 64 are disengaged from the hub 42 and the hub 42, together with the wheel or other rotary member to which it is connected, is permited to rotate freely about the axle 19,even though the lining 29 and surface 30 are in frictional engagement with each other as shown in FIG. 3.
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