US Patent No: 8,181,945

Number of patents in Portfolio can not be more than 2000

Cylindrical vibration isolating device

ALSO PUBLISHED AS: 20080284076

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Importance

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Abstract

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A cylindrical vibration isolating device that prevents damage to a vibration isolating rubber and cracks in a welded portion of a sub-frame. The sub-frame mount comprises an outer cylinder, an inner cylinder connected by the vibration isolating rubber. Small and large diameter portions are provided on a lateral wall of a barrel portion of the outer cylinder. Between the small and large diameter portions is formed a step-like boundary portion. The height in the axial direction of the boundary portion changes in the circumferential direction and has a substantially mountain-like shape with a top projecting in the press fitting direction. A contact area of the large diameter portion contacting a mounting hole of the sub-frame is increased in accordance with an amount of the press fitting. Therefore, when the sub-frame mount is press-fitted into the mounting hole of the sub-frame, the press fitting load is gradually increased.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HONDA MOTOR CO., LTD.TOKYO8699
YAMASHITA RUBBER KABUSHIKI KAISHASAITAMA30

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyahara, Tetsuya - 44 74
Muto, Yuji Saitama, JP 4 2
Nakamaru, Yuichi Fujimino-shi, JP 2 0
Ogawa, Tsutomu Osaka, JP 35 355

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TOKAI RUBBER INDUSTRIES, LTD. (3)
4,883,260 Elastic bushing having fluid chamber filled with highly viscous fluid 28 1988
5,080,330 Fluid-filled cylindrical elastic mount having axially extending and diametrically opposite thin-walled elastic portions 8 1990
5,190,269 Rubber bushing 49 1991
 
TOYO TIRE & RUBBER CO., LTD. (2)
5,887,859 Suspension bushing 12 1996
6,293,531 Vibration-damping mount 1 1999
 
BTR PLC (1)
5,026,031 Fluid-damped resilient bush 10 1988
 
DTR VMS LIMITED (1)
7,370,852 Bush assembly 2 2005
 
KINUGAWA RUBBER IND. CO., LTD. (1)
5,261,748 Structure for bushing 16 1992
 
NISSAN MOTOR CO., LTD. (1)
5,062,654 Bush assembly 18 1991
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
5,954,350 Twist beam suspension 10 1996
 
ZF FRIEDRICHSHAFEN AG (1)
7,234,693 Bearing for a motor vehicle 1 2005

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Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00

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