Elastomeric suspension spring for a motor vehicle and a...

Details Elastomeric suspension spring for a motor vehicle and a... Elastomeric suspension spring for a motor vehicle and a...

2007-02-13

2007-02-13

Mulcahy, Peter D. (Department: 1713)

Spring devices

Vehicle

Mechanical spring and nonresilient retarder

C267S140000, C280S788000, C524S399000, C524S495000, C524S496000

Reexamination Certificate

active

10717390

ABSTRACT:
An elastomeric suspension spring (14) usable for bearing the load of a motor vehicle, which exhibits both reduced creep and improved endurance in torsion and a suspension joint comprising this spring consists of a cross-linked rubber composition based on (phr: parts by weight per hundred parts of diene elastomer(s)):natural rubber in a quantity equal to or greater than 60 phr,a filler, anda sulfur cross-linking system comprising at least one cross-linking accelerator, and is such that said filler comprises, in a mass fraction greater than 55%:a carbon black, whose grade varies from 600 to 900, said composition comprising in this case a total quantity of filler of from 10 to 60 phr, oran inert white filler, said composition comprising in this case a total quantity of filler of from 10 to 30 phr,the cross-linking system comprising 0.7 to 1.2 phr of sulfur and being such that the mass ratio of sulfur to cross-linking accelerator(s) varies from 0.15 to 2.70.

REFERENCES:
patent: 3994842 (1976-11-01), Kimura et al.
patent: 5002829 (1991-03-01), Shibahara
patent: 6074016 (2000-06-01), Blondelet et al.
patent: 6435491 (2002-08-01), Blondelet et al.
patent: 43 40 902 (1994-06-01), None
patent: 0 461 464 (1991-12-01), None
patent: WO 97/47486 (1997-12-01), None
patent: WO 99/41302 (1999-08-01), None
International Search Report, PCT/EP 02/05546, Sep. 25, 2002.

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