초록 ▼

A filament wound pressure vessel is disclosed and has a spherical shape including a polar opening with a fitting disposed in the opening and protruding therefrom. A plurality of layers of filaments are wound about the polar fitting. Each layer comprises a sequence of polar winding patterns wound wit

A filament wound pressure vessel is disclosed and has a spherical shape including a polar opening with a fitting disposed in the opening and protruding therefrom. A plurality of layers of filaments are wound about the polar fitting. Each layer comprises a sequence of polar winding patterns wound with incrementally increasing wind angles away from the polar fitting, creating voids at the junctures of adjacent patterns near the polar fitting and thus between sequential layers at said junctures. One or more annular fill doilies are installed in annular regions about the polar fitting to fill the voids between the layers at the junctures of adjacent winding patterns. The doilies are circular in configuration with a central opening for installation concentric with the polar opening. Preferably, a plurality of the doilies of increasing diameters are installed to fill respective voids at the junctures of the winding patterns of increasing wind angles, with the larger of the doilies installed over the smaller doilies between the filament wound layers.

대표청구항 ▼

In a filament wound pressure vessel which has a spherical portion including a polar opening, a plurality of layers of filaments comprising part of the thickness of the vessel and wound about said polar opening, and each layer comprising a sequence of polar winding patterns wound with incrementally i

In a filament wound pressure vessel which has a spherical portion including a polar opening, a plurality of layers of filaments comprising part of the thickness of the vessel and wound about said polar opening, and each layer comprising a sequence of polar winding patterns wound with incrementally increasing wind angles away from said polar opening creating voids at the junctures of adjacent winding patterns near the polar opening and thus between sequential layers at said junctures; a plurality of annular fill doilies installed in an annular region about said polar opening, each doiley to fill a respective one of said voids, the doilies being sized relative to the respective voids such that the outer circumference of each doiley is located generally at the juncture of adjacent winding patterns at the respective void.