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:
Mar. 14, 2017
Filed:
May. 08, 2015
Applicant:
Valmont Industries, Inc., Omaha, NE (US);
Inventors:
Carl J. Macchietto, Omaha, NE (US);
Richard Christenson, Mansfield Center, CT (US);
Assignee:
Valmont Industries, Inc., Omaha, NE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 7/10 (2006.01); F21V 15/04 (2006.01); F16F 15/023 (2006.01); F16F 15/03 (2006.01);
U.S. Cl.
CPC ...
F21V 15/04 (2013.01); F16F 7/10 (2013.01); F16F 15/023 (2013.01); F16F 15/03 (2013.01);
Abstract
A method and apparatus for providing effective damping of first mode vibration for a range of different types of poles is disclosed. According to a preferred embodiment, the apparatus includes a housing having a horizontal floor with an inward curved surface to form an enclosed chamber and at least one damping weight disposed in the inward curved surface and adapted to freely roll inside the enclosed chamber. Preferably, the apparatus is mounted on the top end of a pole for damping wind-induced first, second or higher mode vibration of the poles.