Honeywell International Inc.

Purdue Research Foundation

Melvin Simon & Associates, Inc.

Raymond J Cipra

Thomas Heinrich Siegmund

Mark L La Forest

Alan E Fatz

Slawomir T Fryska

Allen Simpson

Charles A Parker

Frank Dillon

Mark L LaForest

Somesh Khandelwal

John Stuart Bolton

Nabil Abu Gharbieh

Tobey Cordell

Geoffrey S Fillingsness

Adam Mather

C Christopher Brandt, Ii

Jeffery M Gallagher

Satya Surya Srinivas Varanasi

Peter F Braunisch

A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams.

Sound barrier systems

A brake disk () includes an annular core () formed from a plurality of non-annular pieces (), a first friction disk () mounted on a first side of the annular core (), a second friction disk () mounted on a second side of the core () opposite from the first friction disk (), and at least one fastener () connecting the first and second friction disks () to the core (). Also a method of assembling a brake disk from a core and friction elements.

Brake assembly having multi-piece core and replaceable friction surfaces

A molding process and apparatus suitable for use in molding processes, including rapid prototyping processes and short run production processes. The molding process and apparatus entail the use of a reconfigurable screen tool having a housing defining a manifold cavity and a plurality of substantially parallel pins, each having a head protruding from the housing and a shank protruding into the housing. The heads of the pins define a screen surface through which air is able to flow, for example, through gaps between adjacent heads or through internal passages within the pins. The process further includes axially moving the pins to configure the screen surface, preventing further axial movement of the pins relative to each other, and then drawing a vacuum within the manifold cavity and creating a vacuum at the screen surface.

Molding processes and tool therefor

Preform for carbon-carbon composite part () comprising multiple layers of fibrous mats () wherein each mat () comprises random carbon-containing fibrous matrix () having polymeric binder distributed therein and wherein adjacent mats () are bound together by additional polymer binder, stitching, and interlocking tabs. Also, method of manufacturing thick multi-layer composite preform, by: providing optionally reconfigurable tool including perforated screen through which vacuum can be drawn; delivering chopped fibers (b) to the tool while drawing vacuum therethrough to form fibrous object; delivering binder (c) to the fibrous object; melting or curing the binder (d) to make a fibrous mat (); assembling plurality of the fibrous mats () and additional binder into the shape of a preform (e); and heat-pressing the resulting mat assembly (f) into finished thick preform ().

Manufacture of thick preform composites via multiple pre-shaped fabric mat layers

Annular brake disc preform (), wherein 40 to 80 layers of reinforcement fibers of at least two different lengths () ranging from 10&#x2013;60 mm are distributed in a planar gradient throughout the body of the preform, with the reinforcement fibers located near the exterior planes of the disc being predominately shorter fibers () and with the reinforcement fibers located in the central planes of the disc being predominately longer fibers (). Also, process of making carbon-carbon composite preforms by: providing chopped pitch or PAN fibers () of at least two different lengths; directing a robotic spraying apparatus to spray the chopped fibers into an annular mold () in 40 to 80 concentric iterations of chopped fiber deposition to provide a matrix of fibers in the mold; depositing a curable binder into the mold to intermix the binder with the fiber matrix; compressing the fiber matrix and curable binder within the mold; curing the binder to form a preform matrix; filling the preform matrix with pitch to form a pitch matrix; and subjecting the pitch matrix to chemical vapor deposition to form a carbon-carbon composite preform ().

Manufacture of functionally graded carbon-carbon composites

A single endless series of steps for up and down flights has inboard end spacing control links, each operated by a gear arrangement at transitions between curved and straight paths of step travel. Steps are molded plastic cores with top mounted tread caps, both the cores and caps being of colors as desired, and with light transmission characteristics from opaque to transparent, as desired. Inter-engaging edges on treads and risers are of curved shape facilitating the transition from straight to curved runs of steps. Break-away stripper comb fingers at landings terminate escalator operation when an object becomes jammed between a step and a finger and breaks a finger. Spring-loaded skirt guards at the sides of steps, and step spacing monitors, include wear indicators. The ascending and descending flights of steps are supported by structural tubes extending between floors, with no other support for the flights. Stabilizer legs, rollers and tracks under the steps maintain the horizontal attitude of the steps. Escalator drive is by belt and rack through the links in one embodiment, and by individual motor-gear sets in the steps driving on stationary curved racks in the other embodiment.

Circular escalator

Growing community of inventors

West Lafayette, IN, United States of America

Raymond J Cipra