Rotary shafts – gudgeons – housings – and flexible couplings for ro – Shafting – Particular vibration dampening or balancing structure
Reexamination Certificate
2007-03-20
2007-03-20
Binda, Greg (Department: 3679)
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Shafting
Particular vibration dampening or balancing structure
C188S379000
Reexamination Certificate
active
10347453
ABSTRACT:
In a dynamic damper including: a torque transmissible tube member; a mass member housed within an inside of the tube member concentrically to the tube member; and a pair of elastic members, both ends of the mass member in a center axis direction of the tube member are coupled to the tube member via the pair of elastic members, the mass member includes a large mass section interposed between the pair of elastic members, a length of the mass member in the center axis direction of the tube member is longer than a diameter of the large mass section, and, from among two different bending resonance vibration modes of the tube member, a node of a higher order bending resonance vibration mode is placed at a position between the pair of elastic members.
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Universal Joint and Driveshaft Design Manual, AE-7, Society of Automotive Engineers, Inc., Warendale PA, pp. 235 and 259, TJ1079.S62 1979.
“Mechanical Vibration”, pp. 58 to 61, authored by Atsushi Watari and published by Maruzen Kabushiki Kaisha on Apr. 14, 1966.
“Vibration Engineering Handbook”, p. 66, (table 3.3 Specific Angular Vibration Frequency) authored by vibration engineering handbook editing community represented by Osamu Taniguchi and published by Kabushiki Kaisha Yogendo on Jul. 10, 1981.
Binda Greg
McDermott Will & Emery LLP
Nissan Motor Co,. Ltd.
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