United Technologies Corporation

Carrier Corporation

Sikorsky Aircraft Corporation

Other

Clark VanTine Cooper

James William Bush

Harry E Eaton

Keshava Basavapatna Kumar

Philip H McCluskey

Hussein Ezzat Khalifa

Reng Rong Lin

Ronald T Drost

Hong Du

Harsh Vinayak

Bill C Giessen

Michael F Mullen

Krassimir Grigorov Marchev

Edward J Karedes

Paula R DeBlois, Legal Representative

Alexander Staroselsky

Raymond C Benn

Thomas L Sbabo

Paul J Bushnell

Martin M Mertell

Adam R Glasser

Mark R Jaworowski

Aaron T Nardi

Xia Tang

William K Tredway

Bruce D Hansen

Edward H Bittner

Roy N Guile

Raymond L DeBlois

Charles J Isabelle

Sonia Tulyani

Chris C Rhemer

Jefferi J Covington

Alan B Minick

Igor I Fedchenia

Lawrence Mark Zunski

Leonard W Chapman

Paula R DeBlois

Raymond Deblois

There is a gear set. The gear set has a) a first gear having a first surface and b) an intermeshing second gear having a second surface. The first and second surfaces each, independently, have an isotropic arithmetic mean roughness, Ra, of about 0.0762 micrometers/3 microinches or less and are lubricated. There is also a method for increasing the contact surface-fatigue life of a gear set.

Gear having improved surface finish

A lubrication system includes an additive and a delivery system. During normal operational conditions, the lubricating oil circulating in the transmission system is collected and contained in a secondary oil reservoir to retain a quantity of the lubricating oil for use in an oil-out condition. When an oil-out condition is detected, the additive is injected and mixed with the collected lubricating oil in the secondary oil reservoir or dispersed directly into a power transmission gearbox housing to enhance the characteristics of the lubricating oil and increases the operational time period of the power transmission gearbox during an oil-out condition.

Secondary lubrication system with injectable additive

A nitrided metal includes a metal core with a first microstructure and a nitrogen-containing solid solution region on the metal core. The nitrogen-containing solid solution region is free of nitride compounds and includes a second microstructure which is equivalent to the first microstructure. The first microstructure and the second microstructure are a tetragonal crystal structure.

Method of plasma nitriding of alloys via nitrogen charging

There is a coated, dynamic contact surface. The contact has a substrate and a carbon-based coating on the substrate. The coating has a coefficient of friction of about 0.5 or less and an atomic hydrogen content of about 5% to about 25%. There is also a mechanical system. There is a method for increasing oil-out survivability in a mechanical system.

Process for deposition of amorphous carbon

A coating () for a component of a power transmission system () and a method of coating a substrate is provided. The coating is substantially metal-free with a low hydrogen to carbon ratio. The method includes placing a graphite carbon target and the substrate in a magnetron sputtering chamber. The magnetron sputtering chamber is evacuated and filled with gas. The graphite carbon target is sputtered by the ionized inert and/or hydrogen gas so that the substrate is coated with a metal-free diamond-like-carbon coating.

Metal-free diamond-like-carbon coatings

A positive-displacement pump comprising a housing, a rotatable component disposed at least partially within the housing, and a film disposed at least partially between the housing and the rotatable component, where the film comprises a reinforcing material and a fluoropolymer material.

Fluoropolymer-containing films for use with positive-displacement fluid pumps

A power transmission system including a component having a surface and a plurality of micro-defects is provided. The surface has a distribution of asperities has a second resonance frequency distribution that is substantially outside of the resonance frequency distribution.

System and method for optimizing transmission component life and transmission power

High toughness, high strength alloys are thermochemically processed by performing concurrent bulk alloy heat treatment and surface engineering processing. The concurrent steps can include high temperature solutionizing together with carburizing and tempering together with nitriding.

Method and process for thermochemical treatment of high-strength, high-toughness alloys

A surface processing method and power transmission component includes transforming a surface region of a metal alloy into a hardened surface region at a temperature that is less than a heat treating temperature of the metal alloy. The metal alloy includes about 11.1 wt % Ni, about 13.4 wt % Co, about 3.0 wt % Cr, about 0.2 wt % C, and about 1.2 wt % Mo which reacts with the C to form a metal carbide precipitate of the form MC. The surface processing temperature, vacuum pressure, precursor gas flow and ratio, and time of processing are controlled to provide a desirable hardened surface region having a gradual transition in nitrogen concentration.

Method for processing alloys via plasma (ion) nitriding

A method of nitriding a metal includes transforming a surface region of a generally nitrogen-free metal into a nitrogen-containing solid solution surface region. A first heating process heats the surface region at a first temperature in the presence of a nitrogen gas partial pressure to form a nitrogen-charged surface portion on the surface region. A second heating process heats the surface region and nitrogen-charged surface portion at a second temperature for a predetermined time to interstitially diffuse nitrogen from the nitrogen-charged surface portion a depth into the surface region. Coincident with the second heating process, an ionized inert or reducing gas removes the nitrogen-charged surface portion. The resulting nitrogen-containing solid solution surface region has a gradual transition in nitrogen concentration.

Method of plasma nitriding of metals via nitrogen charging

The bearing system includes a first component having a first substrate and a first coating. The first coating includes a DLC layer and a DLN layer between the DLC layer and the substrate. A second component is in sliding engagement with the first component.

Cryogenic bearings

A method of surface refinement for refining a first roughness of a surface of a component to a second roughness. The method includes wetting the first roughness surface with an aqueous mixture that includes solid media. The aqueous mixture chemically alters the surface forming a chemically converted surface. Relative movement between the chemically converted surface and the solid media produces the refined second roughness.

Chemically assisted surface finishing process

A screw machine () has a rotor housing () defining overlapping bores (--). Female rotor () is located in bore (-) and male rotor () is located in bore (-). A wear resistant coating is deposited on the tips (--) of the rotors. A conformable coating is deposited on the valleys (--) of the rotors. A conformable coating is depsoited on the surface of the bores coacting with the rotors.

Screw machine

A screw machine () has a rotor housing () defining overlapping bores (--). Female rotor () is located in bore (-) and male rotor () is located in bore (-). A wear resistant coating is deposited on the tips (--) of the rotors. A conformable coating is deposited on the valleys (--) of the rotors. A conformable coating is deposited on the surface of the bores coacting with the rotors.

Growing community of inventors

Glastonbury, CT, United States of America

Clark VanTine Cooper