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:
Mar. 18, 1980
Filed:
Nov. 20, 1978
Roderick F Rijnders, Amersfoort, NL;
Abstract
A floating fender consisting of a matrix, in solid form, made of rubber having a density not exceeding 0.91 which is free of gas-filled or air-filled closed pores, and from 5 to 20 parts by weight per one hundred parts by weight of the rubber of carbon black having a particle size smaller than 35 nanometers. The carbon black is dispersed throughout the matrix as a filler and the completed fender has an overall density not exceeding 0.97. The fender has a modulus at 25% elongation of at least 3.5 kg/cm.sup.2 and a tear resistance of at least 10 kg/cm.sup.2 and the carbon black incorporated as a filler in the solid form matrix is utilized solely for its small particle size and high structure, to wit a dibutyl phthalate oil absorption higher than 130 ml/100 gm and a specific surface greater than 130 m.sup.2 /gm.