US Patent 10953777 Extendable armrest assemblies for passenger vehicle seating

Extendable armrest assembly for passenger chair structures, the armrest assembly including a primary armrest configured to pivotably couple to a passenger chair structure, and a secondary armrest disposed beneath, aligned with, and coupled to the primary armrest, where the secondary armrest can be moved from a first stowed position aligned with and beneath the primary armrest and a second extended position in which a portion of surface of the secondary armrest surface is exposed and accessible for use by a passenger seated in the passenger chair structure.