| http://www.w3.org/ns/prov#value | - A hinge joint construction comprising:a first hinge member, a second hinge member secured to the first member, said second member being rotatable about a pivot axis relative to the first member and axially moveable relative to the first member in a first direction parallel to the axis, friction locking means including detent means each having engaged and disengaged states, said locking means being
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