United Technologies Corporation

Otis Elevator Company

United States of America As Represented by the Secretary of the Air Force

USA As Represented by Secretary of the Navy

Carrier Corporation

Karl M Prewo

John J Brennan

George K Layden

Vincent C Nardone

James R Strife

Eric Minford

Pedro S Baranda

Robert K Stalcup

Hugh James O'Donnell

Ary O Mello

David C Jarmon

John E Holowczak

Jayant Sabnis

William K Tredway

David J McFarlin

Robert J Miller

Francis S Galasso

Richard D Veltri

Mark Steven Thompson

Otis Y Chen

Glenn Michael Allen

James F Bacon

Antonio B Caruolo

Warren R Sigman

Martin J Gibler

Pedro Sainz De Baranda

Antonio B Carulo

Hugh J O'DONNELL

The present invention is a low density hybrid airfoil comprising a temperature resistant exterior layer and a tough, high impact resistant interior layer. Specifically, the airfoil comprises a monolithic ceramic exterior layer and a fiber reinforced ceramic matrix composite interior layer. Both the monolithic ceramic and fiber reinforced ceramic matrix composite are low density materials. Additionally, the monolithic ceramic is a high temperature resistant material, and the fiber reinforced ceramic matrix composite is a relatively high impact resistant structure. Encapsulating the airfoil with a temperature resistant exterior layer protects the airfoil in a high temperature environment, and supporting the airfoil with a high impact resistant, fiber reinforced ceramic matrix composite improves the overall impact resistance of the airfoil thereby resulting in a tough, high temperature resistant, low density airfoil.

Hybrid monolithic ceramic and ceramic matrix composite airfoil and method for making the same

A hybrid material tension member for an elevator or other people transportation system using organic fiber and steel material as the load carrying components either discretely or in combined form. Several embodiments are disclosed.

Tension member for an elevator

A tension member for an elevator system has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure and an increased flexibility as compared to conventional elevator ropes. As a result, smaller sheaves may be used with this type of tension member. In a particular embodiment, the tension member includes a plurality of individual load carrying ropes encased within a common layer of coating. The coating layer separates the individual ropes and defines an engagement surface for engaging a traction sheave.

Elevator traction sheave liner

Elevator traction sheave

The present invention is a method and apparatus for peening the internal surface of non-ferromagnetic hollow parts. Ferromagnetic peening elements are inserted into the non-ferromagnetic hollow part, and a magnetic dipole creates a magnetic field through the non-ferromagnetic hollow part attracting the peening elements which contact a portion of the internal surface of the non-ferromagnetic hollow part. The magnetic field is disengaged and a second magnetic dipole creates a second magnetic field, thereby causing the peening elements to contact a second portion of the internal surface. The magnetic dipoles are repeatedly turned on and off, thereby causing repeated impact within the interior of the hollow part until the internal surface attains a predetermined stress level.

Method and apparatus for peening the internal surface of a

An orbiting scroll is made with a ceramic particle reinforced aluminum metal matrix composite. The resultant part has increased wear resistance, closer thermal expansion matching with cast iron, can be used without tip seals and offers the advantages associated with a reduced mass. In manufacturing the part, the part is pressure cast to a near net shape and machined to the final shape.

Lightweight scroll element and method of making

Fiber reinforced glass or glass-ceramic matrix composite articles are described which comprise spaced apart face sheets connected by ribs which extend between the face sheets. The fibers in the ribs are interwoven with the fibers in the face sheets, thereby producing a structure having high shear strength.

Fiber reinforced glass matrix and glass-ceramic matrix composite articles

A process for fabricating a composite article is disclosed. A surface of a preconsolidated fiber reinforced glass matrix composite structure is pretreated to promote adhesion to the surface, a mass of fiber-containing uncured resin is molded in contact with the pretreated surface and the resin is cured to consolidate a fiber reinforced resin matrix composite structure and simultaneously bond the resin matrix composite structure to the glass matrix composite structure. A composite article fabricated by the above process is also disclosed.

Method of making hybrid composite structures of fiber reinforced glass

A method of manufacturing a glass or glass-ceramic matrix composite article is disclosed which serves to eliminate the need for an expensive vacuum hot press and to significantly reduce the time required for densification. A preform composed of a mixture of chopped or continuous fibers such as carbon or silicon carbide and glass powder is heated to a temperature sufficiently high to soften the glass powder to a deformable state. Thereupon, the preform is deformed between dies which are at a temperature below that of the preform. A resultant composite article assumes the configuration of the shaped die cavity and is cooled by the natural loss of heat to the dies.

Process for forming fiber reinforced composite articles

A microstructurally toughened ceramic-particle-reinforced metal-matrix composite article is disclosed. The article exhibits a complex microstructure. The article exhibits high tensile strength, high elastic modulus and high impact resistance. A process for making the article is also disclosed. The process includes positioning structural elments within a metallic container to define one or more void spaces within the container, introducing a quantity of metallic particles or of a particulate mixture of metallic particles and ceramic particles into the void spaces, and consolidating the container, structural elements and particles to form the microstructurally toughened composite article.

Microstructurally toughened metal matrix composite article and method of

A dimensionally stable structural joint particularly suited for use in space systems. The joint comprises a connector having at least two tubular sleeves, at least two tubular members, and at least two annular clamping means for securing the tubular members inside the connector. The connector comprises at least two elements, manufactured from a fiber reinforced composite, which, when mated, form the connector. The tubular members are manufactured from a material having a coefficient of axial expansion of substantially zero. The annular clamping means are manufactured from a material having substantially the same coefficient of radial expansion as the tubular members. The combination of the connector comprises at least two elements and the annular clamping means with substantially the same coefficient of radial expansion as the tubular members allows the joint to accommodate radial expansion and contraction while maintaining axial dimensional stability.

Structural joints of high dimensional stability

A microstructurally toughened ceramic-particle-reinforced metal-matrix composite article is disclosed. The article includes discrete regions of ceramic-particulate-reinforced metal matrix which enclosed within and separated from each other by a network of unreinforced metal. The article exhibits high tensile strength, high elastic modulus and high impact resistance.

Microstructurally toughened metal matrix composite article

Growing community of inventors

Vernon, CT, United States of America

Karl M Prewo