Cam device
US5615586A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2101
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In internal combustion engine (10) having a power shaft (12) mounted in an engine block (11) for rotation about a power shaft axis (X), a valve arrangement (20) for controlling intake to and exhaust from a combustion chamber (20), and a cam device (22) for actuating the valve arrangement (20); the cam device (22) includes a ring cam (24) having a generally ring-shaped body, with the body having an inner peripheral surface (35) and an outer peripheral surface (26). The ring cam (24) is mounted to the engine block (11) for rotation about a cam axis (Y) displaced from the power shaft axis (X). A cam surface (32) or (34) is provided on the outer peripheral surface (26) for actuating the valve arrangement (20) as the ring cam (24) is rotated about the cam axis (Y). A gear (38) is operably engaged with the power shaft (12) and nested inside the inner peripheral surface (35) for driving the ring cam (24). A gear (36) is provided on the inner peripheral surface (35) for being driven by the gear (38) to rotate the ring cam (24) about the cam axis (Y). A pair of cam followers (28) and (30) are received in an elongated aperture (66) having a non-circular cross-section formed in the engine (10…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.