Abstract: A process and apparatus for making die-dried friction wafers collects friction particulates in a mold defining a wafer. The mold includes at least one perforate wall portion against which an aqueous slurry including the particulates is passed to form at least one layer on the wall as the particulates collect in the mold. The collection is dried followed by curing, and may be cured in the mold by heating.
Type:
Grant
Filed:
August 24, 2006
Date of Patent:
May 4, 2010
Assignee:
Raytech Composites, Inc.
Inventors:
Angela L. Petroski, Samuel A. Truncone, James Macey, Hualin Jiang
Abstract: A process and apparatus for making die-dried friction wafers collects friction particulates in a mold defining a wafer. The mold includes at least one perforate wall portion against which an aqueous slurry including the particulates is passed to form at least one layer on the wall as the particulates collect in the mold. The collection is dried followed by curing, and may be cured in the mold by heating.
Type:
Application
Filed:
August 24, 2006
Publication date:
January 29, 2009
Applicant:
Raytech Composites, Inc.
Inventors:
Angela L. Petroski, Samuel A. Truncone, James Macey, Hualin Jiang
Abstract: A wet friction material is disclosed bonded to a plate for transmission of motion, with the friction material made up of a porous fiber substrate, which is at least partially impregnated with a catalyzed resorcinol diglycidyl ether resin to improve properties.
Type:
Grant
Filed:
January 12, 2006
Date of Patent:
April 8, 2008
Assignee:
Raytech Composites, Inc.
Inventors:
Laurie Bowles, Samuel Truncone, Wayne D. Woodson, Wenping Zhao
Abstract: A friction disk suitable for running as an assembly of interleaved disks in a transmission is disclosed. A rigid metallic core on backing plate is covered on one or both sides with a wafer of non-woven yarn wherein the yarn comprises a continuous wound length of heat resistant yarn in a non-overlapping fashion. The yarn is bonded to the core by a thermosetting resin, which is impregnated into the yarn by less than 80% by weight to preserve porosity and allowing penetration of the cooling transmission fluid. The yarn preferably is composed of carbon fibers or filaments.
Type:
Grant
Filed:
July 10, 2002
Date of Patent:
December 14, 2004
Assignee:
Raytech Composites, Inc.
Inventors:
Laurie S. Bowles, Samuel A. Truncone, James J. Petroski
Abstract: A wet friction material is disclosed bonded to a plate for transmission of motion, with the friction material made up of a porous fiber substrate, which is at least partially impregnated with a catalyzed resorcinol diglycidyl ether resin to improve friction properties.
Type:
Application
Filed:
January 12, 2004
Publication date:
November 18, 2004
Applicant:
Raytech Composites, Inc.
Inventors:
Laurie Bowles, Samuel Truncone, Wayne D. Woodson, Wenping Zhao
Abstract: A single sided friction assembly is provided in which an annular ring of friction material is provided on only one side of a relatively heat conductive metallic core plate, with the rings facing the same direction, and the ring of friction material engaging the rear bare metal side of an adjacent disk. An actuator is provided to bring the assembly into frictional engagement. Modifications are made at one and preferably both ends of the assembly to accommodate thermal deformations of the disks.