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:
Aug. 02, 2005
Filed:
Dec. 05, 2002
Steven L. Bivens, Kankakee, IL (US);
Joseph J. Bella, Plainfield, IL (US);
Jefferey S. Cascio, Tinley Park, IL (US);
Steven L. Bivens, Kankakee, IL (US);
Joseph J. Bella, Plainfield, IL (US);
Jefferey S. Cascio, Tinley Park, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A damper apparatus is disclosed for damping movement between a first and a second element. The apparatus includes an elongate housing secured to the first element, the housing having a first and a second end. The housing defines a bore which extends between the ends of the housing. A rotor is connected to the second element, the rotor including a first and a second portion. The first portion of the rotor is rotatably disposed within the bore of the housing. A biasing device has a first and a second termination, the biasing device extending between the second portion of the rotor and the housing for rotationally biasing the rotor relative to the housing. A seal is disposed between the first and second portions of the rotor. The seal cooperates with the bore for sealing the bore relative to the second portion of the rotor such that in use of the apparatus, damping fluid sealed within the bore by the seal dampens rotational movement of the rotor relative to the bore when the rotor is rotationally biased. The arrangement is such that movement between the first and second elements is dampened.