Method of molding a skate wheel having a polyester core and a polyurethane case and the product thereof
US4040670A · kind A · utility
37Cited by
11References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1976 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Jan 21, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2316/30
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making a skate wheel is formed of a transparent, high strength rigid core having a high degree of clarity, which firmly secures and positions a pair of inner bearing races. A transparent wear resistant resilient wheel casing is injection molded completely around the core. The materials are chosen and molded so as to provide an entirely transparent wheel that exhibits the color of the core and in which a display imprinted upon the sides of the core is protected by the casing and made readily visible by light transmitted through both core and casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.