Bruce W Irwin

US Patent:

60151544, Jan 18, 2000

Filed:

May 28, 1998

Appl. No.:

9/085953

Inventors:

William M. Andre - Rochester Hills MI
Bruce W. Irwin - Fort Pierce FL

Assignee:

Hydra-Lock Corporation - Mt. Clemens MI

International Classification:

B23B 3130
B23B 3140

US Classification:

279 207

Abstract:

A hydrostatic tool holder having a displaceable metal sleeve formed with a plurality of circumferentially spaced and longitudinally extending slots and a flexible, polymeric ring defining at least in part a fluid chamber to separate the fluid in the chamber from the sleeve to prevent the fluid from escaping through the slots in the sleeve. The slots in the metal sleeve enable a large displacement of the sleeve through the polymeric ring so that the hydrostatic tool holder may be used with workpieces having rough finishes, such as cast metal workplieces like cylinder liners for internal combustion engines, which as cast have relatively rough surfaces and relatively low dimensional accuracy.