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H e f
H e f_20131212

H e f patents

Recent patent applications related to H e f. H e f is listed as an Agent/Assignee. Note: H e f may have other listings under different names/spellings. We're not affiliated with H e f, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | H e f-related inventors

Method for surface treatment of a steel component by nitriding or nitrocarburising, oxidising and then impregnating

Disclosed is a method for surface treatment of a steel component, providing high resistance to wear and corrosion, including nitriding or nitrocarburising to form a compound layer with a thickness of at least 8 micrometers made up of iron nitrides having phases ε and/or γ′, oxidizing to generate a layer... H e f

Self-lubricating composite friction part

Disclosed is a self-lubricating composite friction part (1) that can be subjected, during operation, to temperatures that are at least equal to 250° C. The part includes, along the friction surface (2), a single layer of a material consisting of weft and warp yarns made of polytetrafluoroethylene, the material being... H e f

Method for treatng a nitrided/nitrocarburised part

In a method of treating a nitrided/nitrocarburized workpiece, at least a portion of the workpiece is subjected to a first step in which at least one laser beam is moved in at least one pass over the portion, until the surface layer of the portion is transformed in part or... H e f

Method for coating the nose of the cams of a camshaft with dlc, camshaft obtained in this way and facility for implementing said method

A cam treatment to reduce the friction coefficient thereof relative to a counterpart in an area provided with a hard coating made from amorphous Diamond-Like Carbon or DLC, involves disposing the cams on a support, bringing the support and the cams into a chamber placed under vacuum so as to... H e f

Method and device for generating a plasma excited by a microwave energy in the electron cyclotron resonance (ecr) domain, in order to carry out a surface treatment or produce a coating around a filiform element

According to the process, the filiform component is continuously linearly moved through magnetic dipoles arranged opposite each other and around a tube constituting a treatment chamber, and the microwave energy is introduced between at least two magnetic dipoles.... H e f

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with H e f in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for H e f with additional patents listed. Browse our Agent directory for other possible listings. Page by