Non-circular rotary component
US7493880B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2004 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Aug 21, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19884
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A non-circular sprocket component comprises a rotor (11) having a plurality of teeth (16) arranged around the perimeter of the rotor, each tooth having a crown (9), and each pair of adjacent teeth having a valley (8) therebetween. The crowns of the teeth lie on a curved envelope forming the perimeter of the rotor. The perimeter has a non-circular profile having at least two protruding portions (22, 23) alternating with receding portions (24, 25). The distance between the midpoints (V) of the crowns (9) of each pair of adjacent teeth is substantially the same. The profile of the valley (8) between each pair of adjacent teeth is substantially the same. The distance between the midpoint (V), of each crown (9) and the axis (A) of the rotor varies around the perimeter to produce the said non-circular profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.