Flywheel
US4977794A · kind A · utility
14Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F15/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An exercise bicycle flywheel (1) comprises a pair of facing concave sheet metal discs (15A, 15B). The space defined between the discs is filled with a heavy material (M) which is a mixture of hematite chips, magnetite powder, hydrated lime, portland cement, and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.