Load restraint for a rotatable seat

A method comprising:

• providing a swivel joint coupled to a base platform, the base platform configured for fitment with a vehicle seat and the base platform having a first base retainer component, a second base retainer component and a third base retainer component;
• providing a seat platform configured for coupling with the swivel joint, the seat platform having a first seat retainer complement and a second seat retainer complement, the swivel joint configured to permit relative motion of the base platform and the seat platform about a rotary axis and constrain motion on other axes;
• aligning the first seat retainer complement and the first base retainer component when the base platform and the seat platform are in a first relative position;
• and
• aligning the second seat retainer complement and the second base retainer component when the base platform and the seat platform are in a second relative position, the second relative position different than the first relative position
• wherein one or both of:
• in the first relative position, the second base retainer component is not engaged, and the third base retainer component that is not engaged in the second relative position.

A device comprising:

• a base platform configured for affixation to an occupant seat of a motor vehicle, the base platform having a first base retainer component and a second base retainer component;
• a seat platform having a seat portion and a back portion, the seat platform having a first seat retainer complement and a second seat retainer complement;
• a swivel joint coupled to the base platform and coupled to the seat portion, the swivel joint configured to permit relative motion of the base platform and the seat platform about a rotary axis and constrain motion on other axes;
• wherein at a first position of the base platform relative to the seat platform, the first seat retainer complement aligns with the first base retainer component;
• wherein at a second position of the base platform relative to the seat platform, the second position different than the first position, the second seat retainer complement aligns with the second base retainer component;
• and
• wherein at least one of the first base retainer component, the second base retainer component, the first seat retainer complement, and the second seat retainer complement are configured to articulate.