Wet friction contact device
AssigneesToyota Jidosha Kabushiki Kaisha, Japan Powder Metallurgy Co., Ltd.
InventorsKoji Shimoda, Teikou Oobucht, Yoshitaka Tomiyama, Satoru Nakano
Life of this patent
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Abstract
A wet type friction contact device comprises a non-driving member; a driving member which drives to the non-driving member; and fluid which is intervened between the non-driving member and driving member; wherein the coefficient of dynamic friction of the contact area between the non-driving member and the driving member is not less than 0.2. Therefore, the present invention provides a wet type friction contact device which secures a large amount of torque capacity compared with that of the conventional wet type contact device without bringing about large-size unit thereof and also without requiring disassembly and exchange thereof.
Claims2
A wet friction contact device comprising:
- a non-driving member;
- a driving member which drives to said non-driving member;
- and oil which is intervened between said non-driving member and said driving member;
- wherein a coefficient of dynamic friction between said non-driving member and said driving member is not less than 0.2 and wherein a contact surface of one of said non-driving member and said driving member comprises at least one major element, and a contact surface of the other of said non-driving member and said driving member comprises a mixture or an alloy of said at least one major element and at least one kind of minor element having a value of free energy which is smaller than that of said at least one major element.
A wet friction contact device comprising:
- a non-driving member;
- a driving member which drives to said non-driving member;
- and oil which is intervened between said non-driving member and said driving member;
- wherein a coefficient of dynamic friction between said non-driving member and said driving member is not less than 0.2 and wherein at least one of said non-driving member and said driving member is a porous material;
- a contact surface of one of said non-driving member and said driving member includes a hard material having not less than Hv150;
- and a contact surface of the other of said non-driving member and said driving member comprises a mixture or an alloy of at least one major element and at least one kind of a minor element having a value of free energy which is smaller than that of said at least one major element.
Dependencies are inferred from the claim text.