Patent ID: 8146999

Claim:
A seat comprising: a seat frame having a seat back portion and a seat pan portion, an arm support member, said arm support member having a hinged end and a free end, the hinged end of said arm support member being pivotably mounted to said seat frame; an arm platform member, said arm platform member having a hinged end and a free end, the hinged end of said arm platform member being pivotably mounted to the free end of said arm support member; a first telescoping strut, said first telescoping strut having a hinged end and a free end, the hinged end of said first telescoping strut being pivotably mounted to said seat frame, the free end of said first telescoping strut slidably engaging said arm platform member proximal the free end of said arm support member, said frame, said first telescoping strut, said arm platform member and said arm support member forming a quadrilateral linkage; a second telescoping strut, said second telescoping strut having a hinged end and a free end, the hinged end of said second telescoping strut being pivotably mounted to said arm support member, the free end of said second telescoping strut slidably engaging the arm platform member proximal the free end of said arm support member said second telescoping strut, said arm platform member and said arm support member forming a triangular linkage; and a locking mechanism for selectively engaging said first and second telescoping struts to prevent sliding engagement between said first and second telescoping struts and said arm platform member.