US Patent 9371631 Ground engaging wear member and means of mechanical attachment

A wear member assembly has a wear member, a wear member receiver with at least first and second contact portions and at least one aperture to receive at least one wear member locating member of the wear member. An attachment mechanism, releasably attaches the wear member to the receiver has at least one moveable attachment member and at least one respective fastening means. Actuation of each of the fastening means moves the associated attachment member to apply a retaining force to one of the contact portions of the receiver and causes the respective wear member locating member to apply a retaining force to the other of the contact portions of the receiver. At least one of the receiver first and second contact portions has a sloped or tapered face, and the corresponding wear member locating member or attachment member has a slope or taper, such that contact between the wear member locating member slope/taper or attachment member slope/taper and a corresponding one of the wear member receiver sloped/tapered contact portions causes the wear member to positively locate to the receiver when the releasable fastening means is actuated thereby releasably retaining the wear member to the outer surface of the earth moving apparatus member.