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US 11,499,619 B2Granted
Cam follower with polycrystalline diamond engagement element
OwnerDavid P. Miess, Gregory Prevost +1inventors
InventorsDavid P. Miess, Gregory Prevost, Michael V. Williams
Life of this patent
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Abstract
A cam follower is provided. The cam follower includes a polycrystalline diamond element, including an engagement surface. The engagement surface of the polycrystalline diamond element is positioned on the cam follower for sliding engagement with an opposing engagement surface of a cam. The cam includes at least some of a diamond reactive material.
Claims27
A cam assembly, the cam assembly comprising:
- a cam follower, the cam follower including a polycrystalline diamond compact coupled therewith, wherein the polycrystalline diamond compact has an engagement surface of polycrystalline diamond, the engagement surface having a surface finish of at most 20 μin Ra;
- a cam, the cam having a metal surface comprising a metal, wherein the metal includes at least 2 wt. % of a diamond catalyst or diamond solvent based on a total weight of the metal;
- and
- wherein the engagement surface of the polycrystalline diamond compact is slidingly engaged with the metal surface.
1 more element
A cam assembly, the cam assembly comprising:
- a cam follower, the cam follower including a polycrystalline diamond compact coupled therewith, wherein the polycrystalline diamond compact has an engagement surface of polycrystalline diamond, the engagement surface having a surface finish of at most 20 μin Ra;
- a cam, the cam having a metal surface comprising a metal, wherein the metal includes at least 2 wt. % of iron, cobalt, nickel, ruthenium, rhodium, palladium, chromium, manganese, copper, titanium, tantalum, or combination thereof based on a total weight of the metal;
- and
- wherein the engagement surface of the polycrystalline diamond compact is slidingly engaged with the metal surface.
1 more element
A method comprising:
- providing a cam follower, the cam follower including a polycrystalline diamond compact coupled therewith, wherein the polycrystalline diamond compact has an engagement surface of polycrystalline diamond;
- lapping or polishing the engagement surface of the polycrystalline diamond compact until the engagement surface has a surface finish of at most 20 μin Ra;
- providing a cam, the cam having a metal surface comprising a metal, wherein the metal includes at least 2 wt. % of a diamond catalyst or diamond solvent based on a total weight of the metal;
- engaging the engagement surface of the polycrystalline diamond compact with the metal surface;
- and
- rotating the cam, wherein during rotation of the cam, the engagement surface of the polycrystalline diamond compact is slidingly engaged with the metal surface.
3 more elements
A system, the system comprising:
- a cam follower, the cam follower including a polycrystalline diamond element coupled therewith, wherein the polycrystalline diamond element has an engagement surface of polycrystalline diamond, the engagement surface having a surface finish of at most 20 μin Ra;
- a cam, the cam having a metal surface comprising a metal, wherein the metal includes at least 2 wt. % of a diamond catalyst or diamond solvent based on a total weight of the metal;
- and
- wherein the engagement surface of the polycrystalline diamond element is slidingly engaged with the metal surface.
1 more element
Dependencies are inferred from the claim text.