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US 11,813,809 B2Granted
Method of manufacturing a composite rim
AssigneeMarshal Industrial Corp.
InventorMing-Jen Tsai
Life of this patent
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Abstract
A method of manufacturing a composite rim includes following steps of: disposing a composite material on an outer surface of an air bag to form a semi-formed rim, wherein the air bag is a completely closed annular tube without any through opening on the outer surface and contains a thermal expansion material thereinside; disposing the semi-formed rim in a mold; and heating the thermal expansion material so that the thermal expansion material expands and inflates the air bag and the semi-formed rim is then solidified.
Claims10
A method of manufacturing a composite rim, including steps of:
- disposing a composite material on an outer surface of an air bag to form a semi-formed rim, wherein before the composite material is disposed on the outer surface of the air bag the air bag is a completely closed annular tube without any through opening on the outer surface and contains a thermal expansion material thereinside, the outer surface of the air bag is self-enclosed and has a substantially fixed outer profile in any radial cross-section, the air bag is integrally formed of one piece, the air bag is annularly hollow thereinside, and the any radial cross-section is completely and annularly closed itself;
- disposing the semi-formed rim in a mold;
- and
- heating the thermal expansion material so that the thermal expansion material expands and inflates the air bag and the semi-formed rim is then solidified.
1 more element
Dependencies are inferred from the claim text.