Patent ID: 9637947
Date: 2017-05-02
CPC Classifications: E04H

Claim:
1. An erectable shelter frame structure comprising: at least a first rib assembly and an Nth rib assembly, wherein each of the first rib assembly and the Nth rib assembly comprises: wherein with respect to the first end rib assembly: wherein with respect to the Nth rib assembly: wherein for each of the first end rib assembly and the Nth rib assemblies, the first arch rail arrangement and the second arch rail arrangement are rotatable with respect to each other about the respective peak joint assemblies, the first leg arrangement and the first arch rail arrangement are rotatable with respect to each other about the respective first side joint assemblies, and the second leg arrangement and the second arch rail arrangement are rotatable with respect to each other about the respective second side joint assemblies; and wherein each of the first rib assembly and the Nth rib assembly comprises a peak joint toggle clamp, a first side joint toggle clamp and a second side joint toggle clamp and wherein at least the first side joint toggle clamp and the second side joint toggle clamp are at least essentially identical in construction; and wherein the first side joint toggle clamp and the second side joint toggle clamp each respectively comprise: a first arm and a second arm rotatably coupled to the first arm; a linkage assembly comprising: a latch, rotatably coupled to the second lever, for latching the second lever in a locking engagement relative to first lever; wherein in an unclamped position, the respective rib assembly will collapse under its own weight or that of the shelter structure and in an unlatched but over-center position, the respective rib assembly will maintain the integrity of the shelter frame structure.