Expansion sleeves and associated chucks
AssigneeKennametal Inc.
InventorRuy Frota de Souza
Life of this patent
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Abstract
In one aspect, expansion sleeves for pressure-activated tool holder apparatus are described herein. An expansion sleeve, for example, comprises a first end, a second end and a longitudinal axis extending between the first end and the second end. A first set of fluid chambers are proximate the first end of the sleeve and a second set of fluid chambers are proximate the second end, wherein fluid channels extend along the longitudinal axis to connect radially offset fluid chambers of the first and second sets.
Claims18
An expansion sleeve for pressure activated tool holder apparatus comprising:
- a first end, a second end, and a longitudinal axis extending along a bore between the first end and the second end;
- a first set of fluid chambers proximate the first end and a second set of fluid chambers proximate the second end, wherein each of the fluid chambers of the first set of fluid chambers are fluid independent of one another and wherein each of the fluid chambers of the second set of fluid chambers are fluid independent of one another;
- wherein fluid channels extend along the longitudinal axis to connect radially offset fluid chambers of the first and second sets;
- and wherein the fluid chambers of the first and second sets are defined by ridges along an outer surface of the expansion sleeve.
An expansion sleeve for pressure activated tool holder apparatus comprising:
- a first end, a second end, and a longitudinal axis extending along a bore between the first end and the second end;
- a first set of fluid chambers proximate the first end and a second set of fluid chambers proximate the second end, wherein each of the fluid chambers of the first set of fluid chambers are fluid independent of one another and wherein each of the fluid chambers of the second set of fluid chambers are fluid independent of one another;
- wherein fluid channels extend along the longitudinal axis to connect radially offset fluid chambers of the first and second sets;
- and wherein the connected fluid chambers of the first and second sets are radially offset by greater than 180 degrees.
An expansion sleeve for pressure activated tool holder apparatus comprising:
- a first end, a second end, and a longitudinal axis extending along a bore between the first end and the second end;
- a first set of fluid chambers proximate the first end and a second set of fluid chambers proximate the second end, wherein each of the fluid chambers of the first set of fluid chambers are fluid independent of one another and wherein each of the fluid chambers of the second set of fluid chambers are fluid independent of one another;
- wherein fluid channels extend along the longitudinal axis to connect radially offset fluid chambers of the first and second sets;
- and wherein the connected fluid chambers of the first and second sets are radially offset by 170 degrees to 190 degrees.
Dependencies are inferred from the claim text.