US Patent:
20040016619, Jan 29, 2004
Inventors:
Daniel Monette - Battle Creek MI, US
Mark Hirsch - Vicksburg MI, US
Bohdan Lisowsky - Troy MI, US
Mark Marklin - Kalamazoo MI, US
Douglas Barton - Marshall MI, US
Patrick Brown - Battle Creek MI, US
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
B23P017/00
F16D013/00
US Classification:
192/10700M, 029/417000, 192/053340
Abstract:
A method for forming a transmission synchronizer friction surface includes the steps of forming a woven substrate fabric, oxidizing the substrate fabric, carbonizing the substrate fabric, densifying the carbonized substrate fabric, burnishing the densified carbonized substrate fabric, applying a thermoset adhesive to the burnished substrate fabric, and heating and pressing the piece of fabric against a conical surface of a synchronizer element. To form the fabric, yarn is formed of chopped substrate fibers, and the yarn is woven to form the woven substrate fabric. Densification is increased by extending a period of time of chemical vapor deposition to achieve a weight in an unburnished condition of at least 16 ounces per square yard for a thickness range of approximately 40 to 50 mils. Both sides of the substrate fabric are burnished. The material is pressed against the conical surface under a high pressure of at least 2000 psi to achieve the desired bonding of the substrate fabric to the conical surface.