Patent ID: 8221020

Claim:
A through pin assembly for securing an axle to a pair of mounting cheeks and stabilizing a machine member comprising: an axle having a tapered first end and a tapered second end, a channel formed through the axle and running a length of the axle; a bearing mounted on a central section of the axle; a pair of expansion sleeves, wherein one of the pair of expansion sleeves is positioned over each of the first end and second end of the axle; a locking device inserted into the channel, wherein the locking device comprises: a through pin having a first and second end that are externally threaded; a first locking member which engages threads on the first end of the through pin; a tension washer member having an opening formed through a central area thereof through which the through pin in inserted, the tension washer member engaging the first locking member and the expansion sleeve on the first end of the axle and causing the expansion sleeves to expand to secure the axle when the first locking device is theadably adjusted along the first end of the through pin; and a second locking member, the second locking member comprising: a cylindrical head member, the cylindrical head member having a threaded central section which engages threads on the second end of the through pin; a geometric shaped member attached to the cylindrical head member, the geometric shaped member interlocking with a geometric shaped opening in the channel in the second end of the axle to prevent the second locking member from rotating during one of installation or removal; and a flanged head member engaging the expansion sleeve on the second end of the axle and causing the expansion sleeves to expand to secure the axle when the first locking device is theadably adjusted along the first end of the through pin; wherein the expansion sleeves on the first end and the second end of the axle expand into a pair of mounting cheeks to secure the axle when the first locking device is adjusted.