Abstract: A percussion hammer bit retention system including a retainer having at least three (3) tabs, a hammer bit having first and second elevated surfaces that each define pathways and slot openings for rotational receipt of the tabs, and a custom chuck further including slot openings for receipt of the tabs. The application of tabs in combination with the elevated surfaces and indexed slot openings distinguish the present invention over the prior art. In application, in order to fully separate the retainer from the assembly, the tabs are indexed in a manner that only allows them to pass through the aligned slot openings on the first elevated surface in one (1) position every 360 degrees, and then through the aligned slot openings on the second elevated surface in one (1) position every 360 degrees, and then through the indexed slots on the custom chuck in one (1) position every 360 degrees.

Abstract: A percussion hammer bit retention system including a retainer having at least three (3) tabs, a hammer bit having first and second elevated surfaces that each define pathways and slot openings for rotational receipt of the tabs, and a custom chuck further including slot openings for receipt of the tabs. The application of tabs in combination with the elevated surfaces and indexed slot openings distinguish the present invention over the prior art. In application, in order to fully separate the retainer from the assembly, the tabs are indexed in a manner that only allows them to pass through the aligned slot openings on the first elevated surface in one (1) position every 360 degrees, and then through the aligned slot openings on the second elevated surface in one (1) position every 360 degrees, and then through the indexed slots on the custom chuck in one (1) position every 360 degrees.