Claims
- 1. Valve actuating mechanism comprising:
- a rotary eccentric rotatable about a primary axis;
- a control member pivotable about said primary axis and including a first pivot axis spaced from said primary axis;
- a primary lever connected with said control member and pivotable about said first pivot axis, said primary lever having a distal end and an eccentric follower operatively connected intermediate said distal end and the first pivot axis, said eccentric follower operatively engaging said rotary eccentric; and
- a secondary lever having one end pivotable about said primary axis, said one end including an oscillating cam engaging a valve actuating member and having a base circle portion and a valve lift portion, the secondary lever having a distal end operatively connected with the distal end of said primary lever,
- said control member being movable between a first angular position wherein primarily the valve lift portion of said oscillating cam engages the valve actuating member for fully opening and closing an associated valve and a second angular position wherein primarily the base circle portion of said oscillating cam engages the valve actuating member for providing minimal opening and closing movement of said associated valve.
- 2. Valve actuating mechanism as in claim 1 wherein said rotary eccentric is a cam and the eccentric follower is a cam follower.
- 3. Valve actuating mechanism as in claim 2 wherein said cam follower is a roller follower.
- 4. Valve actuating mechanism as in claim 1 wherein the operative connection of the primary and secondary levers is through a link connected between the distal ends of said levers.
- 5. Valve actuating mechanism as in claim 1 wherein said valve actuating member is a direct acting cam follower.
- 6. Valve actuating mechanism as in claim 1 wherein said valve actuating member is a fmger follower.
- 7. Valve actuating mechanism as in claim 1 wherein said control member is pivotally actuated by a toothed control gear engaging mating teeth on the control member.
- 8. Valve actuating mechanism as in claim 1 wherein said rotary eccentric is a rotary cam, the eccentric follower is a cam follower and the cam follower engages the rotary cam on a side generally opposite to the location of the valve actuating member.
- 9. Valve actuating mechanism as in claim 1 wherein said rotary eccentric is a rotary cam, the eccentric follower is a cam follower and the cam follower engages the rotary cam on a side generally adjacent to the location of the valve actuating member.
- 10. Valve actuating mechanism comprising:
- a rotary cam rotatable about a primary axis;
- a control member pivotable about said primary axis and including a first pivot axis spaced from said primary axis;
- a primary lever connected with said control member and pivotable about said first pivot axis, said primary lever having a distal end and a cam follower operatively connected intermediate said distal end and the first pivot axis, said cam follower operatively engaging said rotary cam; and
- a secondary lever having one end pivotable about said primary axis, said one end including an oscillating cam engaging a valve actuating member and having a base circle portion and a valve lift portion, the secondary lever having a distal end operatively connected with the distal end of said primary lever,
- said control member being movable between a first angular position wherein primarily the valve lift portion of said oscillating cam engages the valve actuating member for fully opening and closing an associated valve and a second angular position wherein primarily the base circle portion of said oscillating cam engages the valve actuating member for providing minimal opening and closing movement of said associated valve.
- 11. Valve actuating mechanism as in claim 10 wherein said valve actuating member is a direct acting cam follower linearly movable with an associated valve and directly engaged by said oscillating cam.
- 12. Valve actuating mechanism as in claim 10 wherein said valve actuating member is a pivotable finger follower engaging an associated valve and engaged by said oscillating cam for actuating the valve.
- 13. Valve actuating mechanism as in claim 10 wherein the cam follower engages the rotary cam on a side generally opposite to the location of the valve actuating member.
- 14. Valve actuating mechanism as in claim 10 wherein the cam follower engages the rotary cam on a side generally adjacent to the location of the valve actuating member.
Parent Case Info
This application claims the benefit of U.S. Provisional application 60/041,284, filed Mar. 20, 1997.
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