Claims
- 1. A pulley, comprising:
- a central hub portion for connecting said pulley to a shaft and having an axis of rotation through a center thereof; and
- a belt engaging portion disposed radially outward from said central hub portion;
- wherein said central hub portion and said belt engaging portion are injection molded from a thermoplastic polyphenylene sulfide polymer material;
- wherein said central hub portion is provided with a bushing which is insert molded therein, said bushing being provided with a hollow cylindrical portion for receiving a shaft and a pair of longitudinally spaced radial flange portions having a gap disposed therebetween.
- 2. The pulley according to claim 1, wherein said bushing is made of P-20 aluminum which is press fit in said centrally disposed opening.
- 3. The pulley according to claim 1, wherein said pair of flange portions of said bushing have a substantially hexagonal configuration.
- 4. The pulley according to claim 1, wherein said pair of longitudinally spaced radial flange portions are disposed longitudinally inward from ends of said hollow cylindrical body portion.
- 5. A pulley, comprising:
- a central hub portion for connecting said pulley to a shaft and having an axis of rotation through a center thereof; and
- a belt engaging portion disposed radially outward from said central hub portion;
- wherein said central hub portion and said belt engaging portion are injection molded from a thermoplastic material;
- wherein said central hub portion is provided with a bushing which is insert molded therein, said bushing being provided with a hollow cylindrical portion for receiving a shaft and a pair of longitudinally spaced radial flange portions having a gap disposed therebetween.
- 6. The pulley according to claim 5, wherein said pair of flange portions of said bushing have a substantially hexagonal configuration.
Parent Case Info
This Application is a provision of Ser. No. 60/012,909 filed Mar. 6, 1996.
US Referenced Citations (12)