Swivel mechanism for vehicle seat

A swivel seat for an aircraft, comprising:

• a seat top frame, comprising:
• a seat frame;
• a seat back frame connected to a first end of the seat frame;
• a legrest frame connected to a second end of the seat frame, opposite the first end;
• a seat bottom frame, comprising:
• a seat base;
• a seat support depending from a bottom side of the seat base and fixing the seat bottom frame to the aircraft;
• a swivel assembly disposed between the seat top frame and the seat bottom frame, connecting the two, and permitting rotation of the seat top frame relative to the seat bottom frame, comprising:
• a swivel axis around which the seat top frame rotates in relation to the seat bottom frame;
• a tracking axis, approximately perpendicular to the swivel axis, along which the seat top frame can translate in relation to the seat bottom frame;
• a guide plate, disposed on one of the seat base and the seat frame, comprising a guide plate rail;
• a guide follower, disposed on the opposite of the seat base and the seat frame, comprising an engagement surface engaging the guide plate rail;
• wherein as the seat top frame swivels around the swivel axis, one of the guide plate and the guide follower is displaced along the translation axis, which causes at least the seat frame to displace in the same direction along the translation axis, to at least a first or a second clearance distance from the swivel axis, and
• wherein the guide plate and the guide follower do not overlap along the swivel axis.