The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2000
Filed:
Jun. 16, 1998
Robert Laube, Mt. Clemens, MI (US);
Hydra-Lock Corporation, Mt. Clemens, MI (US);
Abstract
A tool holder with an elongate and expanding sleeve within a confining recess of a machine spindle to circumferentially engage the machine spindle and accurately, firmly and concentrically engage a machine tool adjacent to a machine spindle. In one form, a tapered expanding sleeve is disposed about the exterior of the tool holder and is received between the tool holder and the machine spindle in a tapered recess of the machine spindle. A hydraulic fluid is disposed between the tool holder and the expanding sleeve and is pressurized to expand the sleeve into firm engagement with the machine spindle. In another form, the expanding sleeve is received interiorly of a central bore within the tool holder and longitudinal grooves are provided in the sleeve about its circumference forming generally individual fingers. An expander member is disposed within the expanding sleeve and is slidably displaceable to expand the expansion sleeve into firm engagement with the inner wall of the tool holder, which preferably has slots machined through the wall to facilitate displacement of the wall, and thereby urge the tool holder into firm engagement with the machine spindle.