Westinghouse Electric

About: Westinghouse Electric is a company organization based out in Cranberry Township, Pennsylvania, United States. It is known for research contribution in the topics: Brake & Signal. The organization has 27959 authors who have published 38036 publications receiving 523387 citations.

Current limiting fuse

Abstract: A current limiting fuse structure comprising a generally tubular electrically insulating casing having terminal means disposed adjacent to the opposite ends thereof. One or more fusible elements or links is connected between the terminal means. An electrically insulating support member on which each fusible element is disposed is positioned within the associated casing and extends axially between the respective terminal means. At least the axially intermediate portion of the support member is formed from a material which evolves one or more gases which assist or aid in arc extinction in the presence of the arc which results when an associated fusible element melts. The lastmentioned material is also electrically non-tracking in the presence of an arc.

Hybrid combustor with staged injection of pre-mixed fuel

Abstract: A combustor for a gas turbine engine which includes a fuel nozzle at the head end of the combustor, to provide a diffusion flame, and downstream inlet means at a plurality of axial dimensions of the combustor to inject pre-mixed lean fuel/air into the combustor for admission downstream from the diffusion flame resulting in a series of low temperature premixed flames to provide relatively high turbine inlet temperatures from the combustor with a minimum of thermally formed NOx compounds.

Finite difference analysis of plane Poiseuille and Couette flow developments

Abstract: The problem of flow development from an initially flat velocity profile in the plane Poiseuille and Couette flow geometry is investigated for a viscous fluid. The basic governing momentum and continuity equations are expressed in finite difference form and solved numerically on a high speed digital computer for a mesh network superimposed on the flow field. Results are obtained for the variations of velocity, pressure and resistance coefficient throughout the development region. A characteristic development length is defined and evaluated for both types of flow.

Geometric surface inspection system with dual overlap light stripe generator

Abstract: The present invention includes a surface inspection system with a single light source producing two light stripe sheets projected from different angles onto an inspected surface so that a combined light sheet produces a light stripe image with no shadows results. The two light stripe sheets are created by tangentially reflecting a laser beam off of separate cylindrical reflectors. The light stripe is detected by an imaging system, including a camera having a CCD image array, held at a fixed angle with respect to the light sheet which allows the two-dimensional curvature of the stripe to be detected. The two-dimensional light stripe image is converted into a digital image and processed by linear and logical digital filters that narrow the stripe down to two pixels wide. A coordinate extraction apparatus extracts the coordinates of the bottom row of the pixel image producing a digital representation of the light stripe curve. The sample curve is compared by a computer with a reference curve by obtaining the absolute value of the difference in height of points along the sample and reference curves after alignment and comparing the absolute value to an error or tolerance threshold. Any deviation beyond the fixed tolerance is reported as a surface irregularity defect.

Method and apparatus for automatic tissue staining

Abstract: A method and apparatus for specimen slide (710) preparation is disclosed. The method and apparatus of the present invention uses slide trays (700) that have receptacles for at least one specimen slide (710) and an associated reagent park (720). The specimen slide (710) and/or reagent pack (720) includes an identifier (420) that specifies a particular slide preparation protocol that should be followed. The method and apparatus reads the identifier (420) to determine the particular slide preparation protocol and then prepares the specimen slide according to the particular slide preparation protocol. The apparatus may obtain some or all of the reagents needed for the particular slide preparation protocol from the reagent pack (400).