These folding brackets lock in place when lifted, and can be used for reclining chairs or folding tables. Lift again, and they release to fold down. ,
Folding Brackets – Quincaillerie Architecturale / Industrielle
4 x Folding Table Leg Extension Brackets : : DIY & Tools
Mounting Brackets for BoatBuckle G2 Retractable, Ratcheting Tie
Folding Brackets – Quincaillerie Architecturale / Industrielle
MechWares-Folding Bracket-Space Saving For Standing Desk-Wall-Mounted Drop-Leaf
Rok Hardware Ratchet Headrest Fitting for Beds, Desk Lids
Ratchet Bindings
Ratchet Hinge - Richelieu Hardware
.com : Drop Leaf Table Bracket Folding shelf bracket, Wall mount bracket, Shelf brackets
Crank Right for Kreidler folding brackets - JMPB Parts