Valve lifter
AssigneeMorel Motorsports, Inc.
InventorRichard Vene
Life of this patent
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Abstract
The present invention is related to a valve lifter for use in an internal combustion engine. The valve lifter comprises a body adapted to be reciprocally slidable within a valve lifter bore of an engine. The valve lifter includes a rotably mounted cam roller engaging the cam lobe of a cam-shaft where the cam lobe operates to drive the valve lifter body towards a valve open position. The valve lifter may also include an auxiliary roller rotatably mounted in the valve lifter body and engaging the cam roller where the force from the cam lobe is transferred to the lifter body through both the cam roller and auxiliary roller. The present invention includes a method of making a valve lifter by creating grooves in the walls of the recess to aid in the lubrication of the rollers.
Claims15
A valve lifter for an internal combustion engine, comprising:
- 1) a valve lifter body adapted to be reciprocally slidable within a valve lifter bore forming part of the internal combustion engine;
- 2) said valve lifter body rotatably mounting a cam roller engageable with a lobe of a cam forming part of said internal combustion engine, said cam lobe operative to drive said valve lifter body towards a valve opening position;
- 3) an auxiliary roller rotatably mounted within said valve lifter body and in rolling engagement with said cam roller wherein valve opening forces imparted to said cam roller by said cam lobe are transferred to said valve body by both said cam roller and said auxiliary roller.
A valve lifter for an internal combustion engine, comprising:
- 1. a valve lifter body adapted to be reciprocally slidable within a valve lifter bore forming part of the internal combustion engine;
- 2. said valve lifter body rotatably mounting a cam roller engageable with a lobe of a cam forming part of said internal combustion engine, said cam lobe operative to drive said valve lifter body towards a valve opening position;
- 3. an auxiliary roller rotatably mounted within said valve lifter body and in rolling engagement with said cam roller wherein valve opening forces imparted to said cam roller by said cam lobe are transferred to said valve body by both said cam roller and said auxiliary roller;
- 4. said lifter body containing a recess to house said cam roller and said auxiliary roller, said recess including grooves in the walls, said grooves exposing a plurality of bearings of said cam roller and said auxiliary roller to the grooves.
A method of constructing a valve lifter for use in internal combustion engines comprising:
- 1. drilling holes in the solid body of a valve lifter to define the outer edges and depth of a recess;
- and,
- 2. milling the center stock between said holes to create a recess, said milling falling short of the outer edge of said holes so as to leave grooves in the walls of said recess.
A valve lifter for an internal combustion engine, comprising:
- 1) a valve lifter body adapted to be reciprocally slidable within a valve lifter bore forming part of the internal combustion engine including an ear which forms part of an anit-rotation mechanism which resists rotation of said valve lifter body within said lifter bore;
- 2) a recess located within said valve lifter body, said recess including bevels adapted to receive oil into the recess, said recess also including oiling grooves which provide a path for oil to travel within the recess for the purpose of lubricated the bearings of a cam roller and an auxiliary roller;
- 3) a cam roller positioned within said recess and rotatably mounted to the lifter body and in engagement with a lobe of a cam forming part of said internal combustion engine, wherein said cam roller is mounted to said lifter body on a first pin supported by a needle bearing, said cam lobe operates to drive said valve lifter body towards a valve opening position, and;
- 4) an auxiliary roller positioned within said recess and rotatably mounted to the lifter body by a second pin supported by a needle bearing and in rolling engagement with said cam roller, wherein valve opening forces imparted to said cam roller by said cam lobe are transferred to said valve body by both said cam roller and said auxiliary roller.
A valve lifter for an internal combustion engine, comprising:
- 1) a valve lifter body adapted to be reciprocally slidable within a valve lifter bore forming part of the internal combustion engine;
- said valve lifter body comprising a recess, wherein grooves are formed in the walls of said recess, and;
- 2) a cam roller rotatably mounting within said recess engageable with a lobe of a cam forming part of said internal combustion engine, said cam roller including a set of bearings, said cam lobe operative to drive said valve lifter body towards a valve opening position.
Dependencies are inferred from the claim text.