US 9,809,959 B2
Retention system having double-ended expandable pin
Susan Marie Graham, Morton, IL (US); Stephen John Pierz, Peoria, IL (US); and Ronald Mark Ginn, Morton, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Oct. 8, 2015, as Appl. No. 14/878,273.
Claims priority of provisional application 62/067,710, filed on Oct. 23, 2014.
Prior Publication US 2016/0115674 A1, Apr. 28, 2016
Int. Cl. E02F 9/28 (2006.01)
CPC E02F 9/2833 (2013.01) [E02F 9/2891 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A tool assembly, comprising:
a work implement having a protruding nose portion and a bore passing transversely through the protruding nose portion;
a replaceable tool configured to receive the protruding nose portion of the work implement and having apertures at opposing sides that are generally aligned with each other and with the bore of the work implement;
a pin extending through the apertures of the replaceable tool and the bore of the work implement, and having a plurality of axially extending fingers located at each of two opposing ends;
a first tapered fastener configured to engage the axially extending fingers at a first of the two opposing ends; and
a second tapered fastener configured to engage the axially extending fingers at a second of the two opposing ends,
wherein:
engagement of the first and second tapered fasteners with the axially extending fingers causes the axially extending fingers to flare radially outward and engage the work implement; and
heads of the first and second tapered fasteners engage walls of the apertures in the replaceable tool.