Excavating – Ditch filler
Patent
1988-12-08
1991-04-23
Crowder, Clifford D.
Excavating
Ditch filler
411353, E02F 928
Patent
active
050090178
ABSTRACT:
A retaining pin, a metallic washer and a resilient retaining ring for use in securing an earthworking tip to an adapter. Positive retention of earthworking tips on their adapters by their retaining pins during its work cycle is extremely important from an operational, as well as a cost, standpoint. The loss of the tips materially affects production in addition to the time-consuming expense of replacement or repair of the components. Not only must the tips be adequately retained, they must be capable of quick removal for replacement purposes. The retaining pin has an outer peripheral surface and an annular groove defined in the peripheral surface. The washer is slidably disposed on the pin. The washer has a frusto-conical side surface and an inner peripheral surface with an annular groove defined in the peripheral surface. The ring has a cross-section with a predetermined radial thickness and when assembled is disposed in locking engagement in a groove on the pin and the groove of the washer. The retaining ring, in use, is operative in conjunction with the grooves in the pin and washer to prohibit disassembly of the pin from the washer without an external force being applied to the pin sufficient to shear the retaining ring or to fracture the washer.
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Diekevers Mark S.
Fidler Jerry D.
Caterpillar Inc.
Crowder Clifford D.
Pham Huong Q.
Rhoads Kenneth A.
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