Back to results
US 6,079,962 AGranted
Composite aluminum alloy scroll machine components
AssigneeCopeland Corporation
InventorsStephen M. Seibel, Marc J. Scancarello
Life of this patent
Estimating the term…
Abstract
An aluminum alloy scroll machine component having improved lubricity.
Claims26
A scroll machine, comprising:
- a scroll machine component having a surface for contacting another scroll machine component;
- said scroll machine component having more than 2 to about 18% graphite particulate within said aluminum alloy in a region adjacent said surface.
A scroll machine, comprising:
- a first scroll machine component having a surface for contacting another scroll machine component;
- said first scroll machine component being made from an aluminum alloy;
- said aluminum alloy including,
- a) more than 2 to about 18% graphite particulate in a region adjacent said surface;
- b) a predetermined amount of a ceramic reinforcement compound.
2 more elements
A scroll machine, comprising:
- a) a first scroll member;
- and
- b) a second scroll member;
- said first scroll member and said second scroll member being in contact with each other over at least one contact interface, and at least one scroll member being made from an aluminum alloy, wherein at least one of said first scroll member or said second scroll member has more than 2 to about 18% graphite particulate within said aluminum alloy in a region adjacent said contact interface.
1 more element
A scroll machine, comprising:
- a scroll machine component having a surface for contacting another scroll machine component;
- said scroll machine component being made from an aluminum alloy and having graphite particulate within said aluminum alloy;
- said scroll machine component having a dynamic coefficient of friction in a region adjacent said surface less than about 0.4;
- said scroll machine component having a hardness in said region adjacent said surface of at least about 50 H.sub.B (500 kg);
- said scroll machine component having an ultimate tensile strength in said region adjacent said surface of at least about 10 Ksi.
2 more elements
A scroll machine comprising:
- a first scroll machine component having a surface for contacting another scroll machine component;
- said first scroll machine component being made from an aluminum alloy and having graphite particulate within said aluminum alloy;
- said first scroll machine component having a first coefficient of friction in a region adjacent said surface;
- said first scroll machine component having a second coefficient of friction in a region away from said surface that is greater than first coefficient of friction;
- wherein said graphite particulate is present in an amount of more than 2 to about 18 volume percent in said region adjacent said surface.
2 more elements
A scroll machine, comprising:
- a scroll member having a plate and a vane extending from said plate, said vane including a root portion that adjoins said plate, and a tip portion that is distal from said plate;
- said scroll member being made from an aluminum alloy;
- said scroll member further including graphite dispersed in said aluminum alloy in said tip portion;
- said root portion having a substantially lesser amount of graphite than said tip portion and also including a ceramic reinforcing material;
- and
- said tip portion including a lesser amount ceramic reinforcing material than said root portion.
3 more elements
Dependencies are inferred from the claim text.