Radial tetrahedral modular structures
Radial-hinge mechanism
Radiation limiting opening for a structure
Rafter assembly and fixtures
Rafter to plate connection
Rail structure to support flat structural elements
Rapid assembly steel framing
Rapidly deployable temporary modular structures and...
Re-bar clamp assembly
Re-bar support
Rebar and beam bolster, slab and beam bolster upper
Rebar chair
Rebar chair and supporting plate
Rebar hanger
Rebar matrix spacer
Rebar saddle
Rebar spacer assembly
Rebar support system
Reconfigurable erectable truss structure
Refrigerator door assembly