US Patent 9365135 Infant car seat base with safety belt lock-off arm

An infant car seat base has a body, a belt path on the body configured to accept a base anchoring strap there along, and a lock-off arm coupled to the body. The lock-off arm is movable between a blocking position and a lock-off position. The lock-off arm, when in the lock-off position, permits a child seat to be attached to the body. The lock-off arm, when in the blocking position, blocks, inhibits, or prevents attachment of the child seat to the body. A base anchoring strap is captured between the lock-off arm and the body of the base when the base is mounted and secured to a vehicle seat.