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US 2008/0185249 A1Published application
Damped products and methods of making and using the same
AssigneeGM Global Technology Operations LLC
InventorsJames G. Schroth, Michael D. Hanna, Richard H. Hammar, Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Mohan Sundar
Life of this patent
Estimating the term…
Abstract
Various embodiments of the invention include products and parts including a frictional damping means and methods of making and using the same.
Claims89
A product comprising:
- a body portion and a frictional damping means comprising at least a first frictional surface, the first frictional surface comprising a surface of the body portion, a surface of an insert, a surface of a layer comprising particles or fibers, or a surface of a particle or fiber, and wherein the insert is not pre-loaded.
A process comprising:
- forming a part comprising a body portion, the forming comprising casting a material comprising a metal around at least a portion of an insert or through a throughhole or into a recess formed in the insert to provide a frictional damping means.
A process comprising:
- forming a part comprising a body portion, the forming comprising providing a sacrificial insert and casting a material comprising a metal around the insert, solidifying the material, and removing the sacrificial insert to provide a slot-like feature in the body portion constructed and arranged to provide frictional damping upon vibration of the body portion.
A method comprising:
- placing an insert into a casting mold and pouring a material comprising a metal into the mold and solidifying the material to provide a product comprising a body portion, and to provide a frictional damping means, and so that the body portion engages, at least partially encloses, completely encloses, or extends into or through the insert, and with the proviso that the insert is not captured by a sand core prior to placing the insert into the mold.
A method comprising:
- casting a metal to provide a body portion, a first frictional surface and a second frictional surface to provide a frictional damping means.
A method comprising:
- forming a product comprising casting a material to provide a body portion adjacent a frictional surface to provide a frictional damping means.
A product comprising:
- a body portion and frictional damping means comprising an insert and wherein the insert is at least partially held in place by a portion of the body portion extending into, through or over the insert.
Dependencies are inferred from the claim text.