You’re using a public version of DrugPatentWatch with 5 free searches available | Register to unlock more free searches. CREATE FREE ACCOUNT

Last Updated: April 24, 2024

Claims for Patent: 8,163,399


✉ Email this page to a colleague

« Back to Dashboard


Summary for Patent: 8,163,399
Title:Damped products and methods of making and using the same
Abstract: Various embodiments of the invention include products and parts including a frictional damping means and methods of making and using the same.
Inventor(s): Schroth; James G. (Troy, MI), Hanna; Michael D. (West Bloomfield, MI), Hammar; Richard H. (Utica, MI), Dessouki; Omar S. (Beverly Hills, MI), Lowe; Brent D. (Milford, MI), Riefe; Mark T. (Brighton, MI), Sundar; Mohan (Troy, MI)
Assignee: GM Global Technology Operations LLC (Detroit, MI)
Application Number:12/025,967
Patent Claims:1. A product comprising: a body portion comprising cast metal portion and a frictional damping means to damp vibration of the body portion cast-in-place by the cast metal portion comprising at least a first frictional surface, a first frictional surface comprising a surface of the body portion, a surface of an insert, a surface of a layer comprising particles or fibers on the insert, and wherein the insert is not pre-loaded, and wherein the insert is enclosed by the cast metal portion the body portion or the cast metal portion extends into or through the insert or a portion of the insert is bonded to the cast metal portion.

2. A product as set forth in claim 1 wherein the first frictional surface is defined in the body portion.

3. A product as set forth in claim 2 further comprising a second frictional surface defined by the body portion.

4. A product as set forth in claim 1 wherein the first frictional surface is a surface of the insert.

5. A product as set forth in claim 1 wherein the first frictional surface is a surface of the layer.

6. A product as set forth in claim 5 wherein the first frictional surface is a surface of the layer, and wherein the layer comprising the plurality of particles.

7. A product as set forth in claim 6 wherein the layer further comprises a binder.

8. A product as set forth in claim 1 wherein the product comprises an electric motor drive housing.

9. A product as set forth in claim 1 wherein the product comprises a transmission housing.

10. A product as set forth in claim 1 wherein the product comprises a rear end housing for a vehicle drive system.

11. A product as set forth in claim 1 wherein the product comprises an engine block.

12. A product as set forth in claim 1 wherein the product comprises a differential case.

13. A product as set forth in claim 1 wherein the product comprises a combustion engine exhaust manifold.

14. A product as set forth in claim 1 wherein the product comprises a combustion engine cylinder head.

15. A product as set forth in claim 1 wherein the product comprises the head of a golf club.

16. A product as set forth in claim 1 wherein the product comprises a baseball bat.

17. A product as set forth in claim 1 wherein the product comprises an archery bow.

18. A product as set forth in claim 1 wherein the product comprises a device used in a sport.

19. A product as set forth in claim 1 wherein the product comprises a machine.

20. A product as set forth in claim 4 wherein the insert has a minimum average thickness of 0.5 mm and a minimum width of 0.5 mm.

21. A product as set forth in claim 4 wherein the insert has a thickness ranging from about 0.5-3.5 mm.

22. A product as set forth in claim 3 wherein each of the first frictional surface and the second frictional surface comprises a plurality of peaks and valleys and wherein the valleys have an average depth ranging from about 1 mm to about 300 mm.

23. A product as set forth in claim 1 wherein the particles or fibers have a bonding property such that the particles or fibers may bind to each other under compression.

24. A product as set forth in claim 6 further comprising a coating on the particles or fibers.

25. A product as set forth in claim 6 wherein the particles or fibers are treated to provide functional groups thereon.

26. A product as set forth in claim 1 further comprising a plurality of particles or fibers embedded in the body portion.

27. A product as set forth in claim 4 further comprising a plurality of particles or fibers embedded in the insert.

28. A product as set forth in claim 6 wherein each particle or fiber having a length along the longest dimension thereof ranging from about 1 .mu.m-300 .mu.m.

29. A product as set forth in claim 6 further comprising a organic binder.

30. A product as set forth in claim 6 further comprising a polymeric binder comprising at least one of epoxy resins, phosphoric acid binding agent, calcium aluminates, sodium silicates, wood flour or clay.

31. A product as set forth in claim 6 further comprising an inorganic binder.

32. A product as set forth in claim 1 wherein the product comprises a vehicle brake rotor.

33. A product as set forth in claim 1 wherein the product comprises a shaft.

34. A product as set forth in claim 1 wherein the product comprises a bearing.

35. A product as set forth in claim 5 wherein the layer includes at least one of aluminum or silica particles and a binder.

36. A product as set forth in claim 35 wherein the binder comprises lignosulfanate.

37. A product as set forth in claim 4 wherein the insert includes at least one tab having a wettable surface and the body portion being bonded thereto.

38. A product as set forth in claim 4 wherein the insert comprises at least one of aluminum, steel, stainless steel, cast iron or a metal matrix composite.

39. A product as set forth in claim 3 wherein a slot feature is provided between the first frictional surface and the second frictional surface.

40. A product as set forth in claim 5 wherein the layer has a thickness ranging from about 1 .mu.m-300 .mu.m.

41. A product as set forth in claim 6 wherein the particles or fibers do not become eroded at a temperature of 2400.degree. F. or less.

42. A product as set forth in claim 6 wherein the particles or fibers do not become eroded at a temperature of 2700.degree. F. or less.

43. A product as set forth in claim 6 wherein the particles and fibers provide a plurality of peaks for making contact with one of the body portion or the insert.

44. A product as set forth in claim 4 wherein the insert is not preloaded, under pre-tension or held in place by tension.

45. A product as set forth in claim 4 wherein the insert is not a spring.

46. A product as set forth in claim 4 wherein the insert is completely enclosed by the body portion.

47. A product as set forth in claim 4 wherein the insert is constructed and arranged as an inlay in the body portion.

48. A product as set forth in claim 4 wherein the insert is over an outer surface of the body portion.

49. A product as set forth in claim 4 wherein the insert includes a first face and an opposite second face, and wherein the body portion includes a first inner face adjacent the first face of the insert constructed and arranged to be complementary thereto.

50. A product as set forth in claim 49 wherein the first face of the insert and the first face of the body portion are parallel to each other.

51. A product as set forth in claim 4 wherein the insert includes a tab including a bent portion and wherein the bent portion of the tab includes at least one wettable surface and wherein the body portion is bonded to the wettable surface.

52. A product as set forth in claim 4 wherein the insert includes a tab including a bent tab portion.

53. A product as set forth in claim 4 wherein the insert includes at least one throughhole and wherein the body portion includes a post extending through the throughhole.

54. A product as set forth in claim 4 wherein the insert has a recess formed therein and wherein the body portion comprises a post extending onto the recess.

55. A product as set forth in claim 53 wherein the post is bonded to the insert.

56. A product as set forth in claim 1 wherein the body portion comprises cast iron and the insert comprises stainless steel.

57. A product as set forth in claim 1 wherein the frictional surface provides an area over which frictional contact may occur during frictional damping of the part, the area extending in a first direction a minimum distance of 0.1 mm and extending in a second direction a minimum distance of 0.1 mm.

58. A product as set forth in claim 1 wherein the insert comprises a shoulder constructed and arranged to engage the body portion to hold the insert in place.

59. A product comprising: a body portion comprising a cast metal portion and frictional damping means comprising an insert and wherein the insert is at least partially held in place by a portion of the cast metal portion extending into the insert, through the insert or over a shoulder of the insert, and wherein the insert and the body portion have surfaces for frictional movement with respect to each other to damp vibrations of the body portion.

60. A product as set forth in claim 59 wherein the insert comprises a shoulder constructed and arranged to engage the body portion to hold the insert in place.

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.