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:
Jul. 05, 1983
Filed:
Apr. 06, 1982
Applicant:
Inventors:
Assignee:
Bridgestone Tire Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ;
U.S. Cl.
CPC ...
524526 ; 252 62 ; 524474 ; 524484 ; 525237 ;
Abstract
There is disclosed a rubber composition having excellent vibration-insulating properties. The rubber composition comprises 45 to 75 parts by weight of at least one rubber selected from the group consisting of natural rubber, isoprene rubber, butadiene rubber and styrene-butadiene rubber; 40 to 20 parts by weight of halogenated butyl rubber; 5 to 15 parts by weight of copolymer having a styrene content of not less than 50%; 20 to 80 parts by weight of carbon black based on 100 parts by weight of the total of the above rubbers and copolymer; and 3 to 25 parts by weight of aromatic process oil based on 100 parts by weight of the total of the above rubbers and copolymer.