US Patent: 5,494,269 - Vibration Damper


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US Patent: 5,494,269

Vibration Damper

Patentee:

Paul E. McCalmont (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:

269/224, 269/228, 269/310

Tool Categories:

metalworking machines : metalworking machine mechanisms

Assignees:

Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 26, 1994
Granted:	Feb. 27, 1996

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Cincinnati Milling Machine Co.

Description:

Abstract:

A workpiece is clamped to a machine table while being machined, but a cantilevered portion of the workpiece is subject to vibrations. The cap of a vibration damping unit is supported on the machine base and spring-loaded upwardly against the workpiece. A support spring acting on a seat forces a damping element against the cap which, in turn, is impressed against the cantilevered workpiece. Vibrations are suppressed by horizontal shearing motion of the ring damping element. The entire damping assembly comprising the cap, ring damping element, seat and spring are retracted from the workpiece by means of a central rod connected to a manually actuated toggle clamp.