Retainer pin having an internal secondary retainer pin

US 6,499,240 B1
Retainer pin having an internal secondary retainer pin
George S. Creighton, Flower Mound, Tex. (US)
Assigned to TRN Business Trust, Dallas, Tex. (US)
Filed on 05-Sep-2001, as Appl. No. TRN Business Trust, Dallas, Tex. (US)
Int. Cl.7E02F 9/28

US 6,499,240 B1 Retainer pin having an internal secondary retainer pin George S. Creighton, Flower Mound, Tex. (US) Assigned to TRN Business Trust, Dallas, Tex. (US) Filed on Sep. 05, 2001, as Appl. No. 9/947,239. Int. Cl.7E02F 9/28 U.S. Cl. 378212;456 25 Claims 1. An adapter assembly for use with excavation equipment, comprising: an adapter having first and second adapter ends, and first and second adapter sides; a removable tooth having first and second tooth sides, the removable tooth being coupled with the adapter and at least partially covering the first adapter end; a central portion of the adapter defining an elongate slot which extends from the first adapter side to the second adapter side; the first and second tooth sides having first and second openings, respectively, configured such that the first and second openings are aligned with an imaginary longitudinal axis of the elongate slot while the removable tooth is coupled with the adapter; a primary retainer pin extending at least partially through the first and second openings and the elongate slot, the primary retainer pin being configured to cooperate with the removable tooth, adjacent the first and second openings, to couple the removable tooth and the adapter; the primary retainer pin having a first face which is generally parallel with the first adapter side, and including an internal bore extending from the first face to a side of the primary retainer pin; a secondary retainer pin extending from the internal bore and at least partially into a recessed cavity defined by the central portion, the recessed cavity extending from the elongate slot; and the secondary retainer pin cooperating with the primary retainer pin and the adapter adjacent the recessed cavity to limit movement of the primary retainer pin with respect to the adapter.