Two-part valvue member assembly
AssigneeCummins Inc.
InventorMatthew J. Purdey
Life of this patent
Estimating the term…
Abstract
A two-part wastegate valve member assembly comprises a support member and a valve member. The support member defines an aperture. The valve member comprises a central portion extending through the aperture and two opposed end portions disposed on opposite sides of the aperture. Each of the two end portions has dimensions such that the valve member is held captive by the support member. The central portion and two opposed end portions of the valve member are integrally formed. A method for forming the two-part wastegate valve member assembly comprises casting a single manufacturing intermediate and subsequently processing the manufacturing intermediate so as to form the two-part assembly.
Claims16
A method for forming a two-part wastegate valve member assembly, the method comprising:
- casting a single manufacturing intermediate;
- processing the manufacturing intermediate so as to form a two-part assembly, the two-part assembly comprising a support member and a valve member, wherein the support member defines an aperture and wherein the valve member comprises a central portion extending through the aperture and two opposed end portions disposed on opposite sides of the aperture and at opposing ends of the central portion, each of the two end portions having dimensions greater than corresponding dimensions of the central portion or the aperture such that the valve member is held captive by the support member;
- and
- after the manufacturing intermediate has been processed to form the two-part wastegate valve member assembly, deforming the valve member so as to reduce the extent of the movement of the valve member that is possible relative to the support member.
A method for forming a two-part wastegate valve member assembly, the method comprising:
- casting a single manufacturing intermediate;
- and
- processing the manufacturing intermediate so as to form a two-part assembly, the two-part assembly comprising a support member and a valve member, wherein the support member defines an aperture and wherein the valve member comprises a central portion extending through the aperture and two opposed end portions disposed on opposite sides of the aperture each of the two end portions having dimensions such that the valve member is held captive by the support member,
- wherein the casting the single manufacturing intermediate includes casting the single manufacturing intermediate using at least one of:
- an investment casting and
- a process including:
- forming first and second temporary patterns, each of the first and second temporary patterns corresponding to a different portion of the manufacturing intermediate, wherein the first temporary pattern comprises a portion that corresponds to a portion of the manufacturing intermediate from which part of the valve member will be formed and the second temporary pattern comprises a portion that corresponds to a portion of the manufacturing intermediate from which a second part of the valve member will be formed;
- joining the temporary patterns together to form an assembled pattern cluster;
- applying investment materials to the assembled pattern cluster to form an investment mould;
- and
- casting the single manufacturing intermediate in the investment mould.
A method for forming a two-part wastegate valve member assembly, the method comprising:
- casting a single manufacturing intermediate;
- and
- processing the manufacturing intermediate so as to form a two-part assembly, the two-part assembly comprising a support member and a valve member, wherein the support member defines an aperture and wherein the valve member comprises a central portion extending through the aperture and two opposed end portions disposed on opposite sides of the aperture each of the two end portions having dimensions such that the valve member is held captive by the support member,
- wherein at least one of
- processing the manufacturing intermediate so as to form a two-part assembly comprises using a cutting mechanism for removing material from the manufacturing intermediate while moving the manufacturing intermediate relative to the cutting mechanism and
- after the manufacturing intermediate has been processed to form the two-part wastegate valve member assembly, the valve member is deformed so as to reduce the extent of the movement of the valve member that is possible relative to the support member.
Dependencies are inferred from the claim text.