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IPC

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Application

2002122776/28, 2002-08-27

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Start date

2002-08-27

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Actual filing date

2002-08-27

(45)

Published

2003-09-27

(72)

Inventor

Lobozov V.P.Nikitin S.I.Kuznetsov A.A.Karpov A.A.Syrtlanov R.R.Naumov N.V.Vasin E.A.Ezubchenko V.N.Valeev D.Kh.Smirnov I.G.Azil'Gareev Kh.G.

(73)

Holder

Zakrytoe Aktsionernoe ObshchestvoOtkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Zavod"

LEAF SPRING FOR MOTOR TRANSPORT FACILITIES Russian patent published in 2003 - IPC

Abstract RU 2213280 C1

FIELD: mechanical engineering; leaf springs for motor transport facilities. SUBSTANCE: proposed leaf spring has several leaves made from hardened and tempered steel of similar width and different length at constant or varying longitudinal profile. Each spring leaf is made from carbon construction steel of low hardenability subjected to volume and surface hardening at self-tempering or furnace tempering. Microstructure over transversal section of leaf is just tempered martensite depending on its thickness at size of actual austenite grain of 11-14 and hardness of 52- 57 HRC_ef or tempered martensite of surface layer at size of actual austenite grain of 11-14 and hardness of 54060 HRC_ef and troostite, troostosorbite or sorbite of leaf core at hardness of 25-47 HRC_ef. EFFECT: enhanced strength and durability; low cost. 2 tbl

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RU 2 213 280 C1

Authors

Lobozov V.P.

Nikitin S.I.

Kuznetsov A.A.

Karpov A.A.

Syrtlanov R.R.

Naumov N.V.

Vasin E.A.

Ezubchenko V.N.

Valeev D.Kh.

Smirnov I.G.

Azil'Gareev Kh.G.

Dates

2003-09-27—Published

2002-08-27—Filed