Friction generating device and method of making the same
AssigneeLuk Lamellen und Kupplungsbau GmbH
InventorsHeiner Willerscheid, Karl Wurm
Life of this patent
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Abstract
A friction lining for use in the clutch plate of a friction clutch or a multiple wrap brake band for use in an automatic transmission is obtained by adhesively securing one side of a friction generating second layer to one side of a metallic first layer. The necessary incisions in the form of cuts, slots or slits are made from the exposed side of the second layer in a direction toward the exposed side of the first layer by resorting to one or more high-energy streams, such as laser beams, electron beams or liquid jets. Each incision can be made in one or more stages by a single stream or by a series of successively applied streams.
Claims29
A shaped friction generating body for use in clutches, comprising a metallic first layer having a first side and a second side;
- and a second layer affixed to one side of said first layer and comprising a friction generating material, at least one of said layers having at least one incision carried out by at least one high-energy stream.
A friction lining for use in clutch plates, comprising a metallic first layer having a first side and a second side;
- and a second layer affixed to one of said sides and comprising a friction generating material, at least said second layer having at least one incision carried out by at least one high-energy stream.
A substantially cylindrical brake band comprising a metallic first layer having a first side and a second side;
- and a second layer applied to one of said sides and comprising a friction generating material, at least one of said layers having at least one incision carried out by at least one high-energy stream.
A method of making a shaped friction generating body comprising the steps of bonding one side of a metallic first layer to one side of a second layer consisting at least in part of a friction generating material;
- and providing at least one of the layers to the action of at least one high-energy stream.
Dependencies are inferred from the claim text.