Back to results
US 7,086,151 B2Granted
Powder metal scrolls
AssigneeCopeland Corporation
InventorMarc J Scancarello
Life of this patent
Estimating the term…
Abstract
Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.
Claims28
A method for forming a scroll component comprising the steps of:
- providing a metallic powder;
- providing a first mold defining an involute scroll form cavity;
- providing a second mold defining a hub cavity;
- introducing said metallic powder into said first mold to form a green involute scroll form;
- introducing said metallic powder into said second mold to form a green involute hub form;
- removing said green involute scroll form from said first mold;
- removing said green hub form from said second mold;
- coupling green hub to said green involute scroll form;
- and
- sintering said green involute scroll form to said hub form to form an involute scroll component.
7 more elements
A method for forming a scroll component comprising the steps of:
- introducing metal powder into a first mold defining a first cavity having involute and base plate portions to form a green involute scroll form;
- introducing metal powder into a second mold defining a hub shaped second cavity to form a green hub form;
- placing the green hub form in contact with the green involute scroll form;
- and
- simultaneously sintering the green involute scroll form and the green hub form to form an one-piece scroll component.
2 more elements
A method of forming a scroll component comprising the steps of:
- forming a green powder metal scroll member having involute and base portions;
- forming a green hub form;
- placing the hub form in contact with the base portion;
- simultaneously sintering the green involute scroll member and green hub form to mate the scroll member to the hub;
- and
- introducing a polymer into pores of the scroll component.
3 more elements
Dependencies are inferred from the claim text.