Slippage prevention mechanism for toothed endless torque transmission member
US7946939B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2007 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Dec 10, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/081
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sprocket (3A, 3B) is fixed onto a crank shaft (2) projecting outward from a cylinder block (1) of an internal combustion engine (100). A timing chain (7A, 7B) is looped around the sprocket (3A, 3B). A slippage prevention mechanism (10) which prevents slippage of the timing chain (7A, 7B) with respect to the sprocket (3A, 3B) comprises an arm (10C) extending from a base portion (10A) fixed to the cylinder block. A slippage prevention rail (10B) in the form of an arc-shaped recess is formed on the arm (10C) so as to face the engaging part between the sprocket (3A, 3B) and the timing chain (7A, 7B) with a clearance smaller than the height of a tooth of the sprocket (3A, 3B) therebetween. The slippage prevention rail (10B) thus constructed does not interfere with other members fixed onto the crank shaft (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.