Retainer ring having a trapezium-shaped cross-section

An automatic transmission comprising:

• a housing;
• a first transmission component is mounted in the housing, the first transmission component includes a first surface having an annular groove;
• a second transmission component is supported on the first surface adjacent to the annular groove;
• and
• a retainer ring is positioned in the annular groove to limit axial movement of the second transmission component relative to the first transmission component, the retainer ring includes a trapezium-shaped cross-section including an outwardly facing edge and an inwardly facing edge, wherein one of the outwardly facing edge and the inwardly facing edge is positioned in the annular groove and the other of the outwardly facing edge and the inwardly facing edge includes an angled surface configured to selectively engage with the second transmission component.

A vehicle comprising:

• a body defining a passenger compartment;
• a plurality of wheels supporting the body;
• a motor arranged in the body;
• and
• a transmission operatively connecting the motor and the plurality of wheels, the transmission comprising:
• a housing;
• a first transmission component is mounted in the housing, the first transmission component includes a first surface having an annular groove;
• a second transmission component is supported on the first surface adjacent to the annular groove;
• and
• a retainer ring is positioned in the annular groove to limit axial movement of the second transmission component relative to the first transmission component, the retainer ring includes a trapezium-shaped cross-section including an outwardly facing edge and an inwardly facing edge, wherein one of the outwardly facing edge and the inwardly facing edge is positioned in the annular groove and the other of the outwardly facing edge and the inwardly facing edge includes an angled surface configured to selectively engage with the second transmission component.