Retention mechanism for ground engaging tools

A tip assembly, comprising:

• an adapter configured to be fixed to a work implement, the adapter including:
• a retainer opening extending into a nose of the adapter in a direction transverse to a longitudinal axis of the adapter;
• and
• a blind hole with a non-circular cross-section extending further into the nose from an inner bottom surface of the retainer opening;
• a tip configured to be mounted on the adapter, the tip including:
• a nose cavity configured to receive the nose of the adapter;
• and
• a transverse thru hole extending through a lateral side wall of the tip transverse to the longitudinal axis, the transverse thru hole being in communication with the nose cavity, the transverse thru hole including a female thread;
• and
• a retention mechanism, including:
• a main retainer, including:
• a retainer body extending from a retainer proximal end to a retainer distal end;
• a non-circular thru hole extending along a central axis of the main retainer;
• and
• a male thread on an outer surface of the main retainer, the male thread being configured to threadedly engage the female thread in the transverse thru hole;
• a center pin, including a non-circular outer profile that matches a profile of the non-circular thru hole of the main retainer;
• and
• a center pin clip attachable to the center pin, wherein
• the non-circular thru hole of the main retainer is configured to be aligned with the blind hole in the adapter when the main retainer is in its fully engaged position, and
• the center pin is configured to be inserted into the non-circular thru hole of the main retainer with a distal end of the center pin positioned in the blind hole in the adapter.

A tip assembly, comprising:

• a tip configured to be mounted on an adapter, the tip including:
• a nose cavity configured to receive a nose of the adapter;
• and
• a transverse thru hole extending through a lateral side wall of the tip transverse to the longitudinal axis, the transverse thru hole being in communication with the nose cavity;
• and
• a retention mechanism, including:
• a main retainer, including:
• a retainer body extending from a retainer proximal end to a retainer distal end;
• a non-circular thru hole in the retainer body extending along a central axis of the main retainer;
• a detent on an inner wall of the thru hole adjacent the retainer proximal end;
• and
• a threaded outer surface of the retainer body configured to engage with a thread in the transverse thru hole;
• a center pin, including a non-circular outer profile matching a profile of the non-circular thru hole of the main retainer;
• and
• a center pin clip attachable to the center pin and including a protrusion on an outer surface of the center pin clip, wherein when the main retainer is in its fully engaged position,
• the non-circular thru hole of the main retainer is configured to be aligned with a blind hole in the adapter,
• the center pin is configured to be inserted into the non-circular thru hole of the main retainer with a distal end of the center pin positioned in the blind hole in the adapter, and
• the protrusion on the center pin clip is configured to engage with the detent.