Patent ID: 11892030
Assignee: CROMPTON TECHNOLOGY GROUP LIMITED
Field: Other special machines (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 10:
11. A composite beam structure comprising:
an end piece having an axis, an end piece outer periphery surface, and an end piece mating end defining an end piece axial boundary,
wherein the end piece has an outwardly facing surface that is continuous about its perimeter in a circumferential direction, wherein wedge-shaped inner locking features extend radially outward from said outwardly facing surface, wherein the wedge-shaped inner locking features that are formed at the end piece mating end and are spaced apart from one another in the circumferential direction;
wherein, in the hoop direction along the end piece axial boundary, the end piece is continuous about its perimeter between the wedge-shaped inner locking features; and
a composite tube configured to surround at least a portion of the end piece mating end to form a beam joint,
wherein wedge-shaped imprints are formed through the composite tube, corresponding to the wedge-shaped inner locking features,
wherein the wedge-shaped imprints define respective composite tube wedge-shaped depression surfaces about a composite tube inner periphery and composite tube wedge-shaped boss surfaces about a composite tube outer periphery, and
wherein the wedge-shaped inner locking features of the end piece are covered by the composite tube wedge-shaped depression surfaces,
wherein the composite beam structure further comprises:
an end cap that is secured to the composite tube outer periphery of the composite tube at the beam joint, wherein:
the end cap is formed with wedge-shaped outer locking features connected to one another by a collar portion; and
the wedge-shaped outer locking features are configured to abut adjacent ones of the composite tube wedge-shaped boss surfaces.