Document pev4Lb6qBj3M0987amLzLD1DX

' United States Patent 4,217,255 Page 1 of 9 USPTO Patent Full-Text and Image Database (286 of 356 ) United States Patent Griffith Composition railroad friction material with synthetic fiber content 4,217,255 August 12, 1980 Abstract Composition railroad fnction materials having low wear rates are characterized by the use of synthetic fiber and by the absence of lead and asbestos These friction matenals are particularly suitable for use in railroad brake shoes and contain, by approximate weight, 0 5-11% non-asbestos fiber, of which at least 0 5% is synthetic fiber, 66-81% filler and 14-21% organic binder Inventors Griffith; Arvon M. (Valley Cottage, NY) Assignee Abex Corporation (New York, NY) Appl No 030411 Filed April 16,1979 Current U.S. Class: Intern'1 Class: Field of Search: 3684062 3907729 3922241 3959194 IB967037 523/156, 188/251 A, 188/251R, 523/512, 523/514, 523/515; 523/516, 523/526, 523/527, 524/32, 524/63, 524/423; 524/566, 524/575 C08L 001/02, F16D 069/00 260/17 2,17 4 CL,38,42 18 References Cited [Referenced By] Aug, 1972 Sep , 1975 Nov, 1975 May, 1976 Jun, 1976 U.S. Patent Documents Johnson Burkey et al Barker et al Adelmann Marzocchi et al 188/251 260/17 260/17 188/251 428/392 Other References SCF-ABEX-2385 ABEX-203 10 http //path uspto gov/netacgi/nph-Parser9Sectl=PT02&Sect2=HTTOFF&u=/netahtml/sea 10/18/2003