Abstract:
A method for repairing the liquid-cooled electrical windings (1) of the stator of an electric generator, in which each electrical winding (1) has a plurality of bars (2, 3), which are set alongside one another ahd, in part, have channels (7) for conveying the cooling fluid, and a terminal (5), which has, on one side, an opening (8), inserted in which are the ends of the bars (2, 3) and, on the other side, a fitting (9) for connection to a connector pipe (6) for supply or discharge of the cooling fluid, envisages the steps of : a) cutting the terminal (5) into a first portion (18) comprising the opening (8), and a second portion (19) comprising the fitting (9), the cut producing a first cutting surface (20) along the first portion (18); b) cleaning the free ends of the bars (2, 3) housed in the first portion (18); c) hermetically joining the free ends of the bars (2, 3) to one another and to the first portion via TIG welding in a helium atmosphere (18); d) facing the first cutting surface (20); e) selectively regulating the position between the second portion (19) and the first portion (18) for re-composing the terminal (5); f) induction brazing the second portion (19) to the first portion (18) ; and g) performing at least one of the steps a), d) and e) by means of a repair device (22; 48; 60), which can be anchored to the first portion (18).
Abstract:
A method and related system and apparatus for refurbishing worn rail transit rails to a desired refurbished rail surface profile substantially similar to the surface profile of a newly-manufactured rail, comprising: depositing a first line of fill material along a lower-inside section to be refurbished; in N -1 successive iterations thereafter, progressing circumferentially from the lower-inside section to be refurbished to an upper-outside section to be refurbished, depositing an n +1 th line of fill material adjacent an n th line of fill material wherein the n th line of fill material substantially provides a flow barrier against the n +1 th line of fill material flowing past the n th line of fill material.
Abstract:
This invention pertains to a method of fitting a nylon reinforced or polyester reinforced fire hose (1) to a coupling (3). The method includes the steps of placing the hose (1) over the coupling (3), then wrapping the hose (1) with the heating apparatus (7) at a temperature of between 270-300 DEG F until an inner surface of the hose (1) shrinks onto and engages on outer surface of the coupling (3).
Abstract:
A method for restoring a worn rail section includes cleaning a worn surface of a rail section to expose a clean metal surface, heating the rail section to a first temperature before welding, welding new metal on the clean metal surface of the rail section after heating the rail section to the first temperature, heating the rail section to a second temperature after the welding to heat-treat a heat-affected area caused by the welding, and shaping the rail section, wherein the welding is performed by a gas metal arc welding
Abstract:
A system and method for reconfiguring a turbine vane (12). In at least one embodiment, the system may be used to straighten an airfoil (14) of a turbine vane (12) segment to remove lean, twist, or racking, or any combination thereof. The airfoil (14) may be straightened by fixing portions of the forward and aft hooks of the inner and outer shrouds (18) of the turbine vane (12), restricting other portions of the forward and aft hooks of the inner and outer shrouds (18) of the turbine vane (12) to only move rotationally about a centerline of the inner or outer shrouds (18), and applying a load to various portions of the inner and outer shrouds (18) and the airfoil (14) to return the turbine vane (12) to be within predetermined specifications.
Abstract:
The invention relates to an improved mattress or the like comprising an inner spring assembly from a used mattress or the like wherein said inner spring assembly has been stripped of its outer covering of ticking and padding material, heat treated to provide stress relief to the components of said inner spring assembly having received only partial stress relief or no stress relief when said assembly was new, and covered with new ticking and padding material. Prior to said heat treatment, the used inner spring assembly has any bent border wires and connecting wires straightened, any displaced components returned to their proper position, and any damaged components replaced with good quality new or used replacement components resulting in the same inner spring assembly structure as when said assembly was new. The resulting mattress or the like has improved load bearing capacity compared to the original mattress or the like when it was new.
Abstract:
A method and apparatus for replacement of damages display shield (typically glass) covering a display screen on a device, typically a mobile phone. Mobile phones have an electronic display protected by a glass shield. Between the glass and the display is often a plastic polarizing or other intermediary sheet. Removal of a damage glass can be accomplished by cutting thru the polarizer with a moving wire or blade. This separates the glass from the sensitive display and allows replacement of the glass without damaging the more expensive display..
Abstract:
A method and apparatus for restoring displaced features on a turbine vane segment for a gas turbine engine, such as a vane segment in a low pressure turbine, and more specifically, the inner shroud thereof relative to the outer shroud thereof to meet the original design position and dimensions.
Abstract:
A method and apparatus for replacement of damages display shield (typically glass) covering a display screen on a device, typically a mobile phone. Mobile phones have an electronic display protected by a glass shield. Between the glass and the display is often a plastic polarizing or other intermediary sheet. Removal of a damage glass can be accomplished by cutting thru the polarizer with a moving wire or blade. This separates the glass from the sensitive display and allows replacement of the glass without damaging the more expensive display..
Abstract:
A specialized tool is provided for the removal of components in a microwave module in which a fixed tool having a channeled tip is positioned adjacent the component to be removed. A hot stream of gas, in one embodiment nitrogen, is then forced through the channel onto the top surface of the component to be removed, with the microwave module lying on a heated platen, such that the local increase in temperature at the component to be removed in enough hotter than the ambient temperature of the module as determined by the heated platen to soften the silver epoxy used to mount the component to the module without damaging nearby components. With the fixed tool adjacent the component to be removed and with the component provided with targeted heating, the module is moved against the tool to cause a shear force to moves the component away from its original position, thus breaking the epoxy bond, after which the component is plucked from the module. The subject tool and technique eliminated collateral damage associated with the use of a ball peen hammer and chisel, and results in a tenfold decrease in rework time.