42results about How to "Ensure longevity" patented technology

A combustion chamber of a combustion system comprises a combustion space, a support structure, a heat shield, and at least one through-opening. The heat shield has at least two segments, and each segment has an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and a retaining device. The adjacent segments include a support element disposed in a bottom region of the gap. The retaining device fixes the respective liner element on the support structure via the respective support element. The at least one through-opening communicates with the gap so as to enable a cooling gas to flow through the through-opening. The at least one through-opening is disposed in at least one of the respective edge region and the support element at the bottom region of the gap.

An universal semi-automatic foldable box is generally disclosed comprising a box body (1) having a bottom panel (2), and two or more side walls (5), and the corresponding number of soft sheets (9) and spring strips (11). Each spring strip is connected to the bottom panel and at least one side wall. The side walls are connected to the bottom panel such that they can unfold and rise and the sheets form foldable connecting portions for connecting the side walls, and the spring strips serve to unfold the box flat. The spring strip has the property of remaining straight when unfolded but self-folding when it is slightly bent from its straight condition. The spring strips may be provided as an integral part of the box, or alternatively, may be a separate piece, which then can be attached by the user to the side walls of the box. The box body can be of different size and shape, such as for example square, sphere, rectangular, hexagonal, octagonal, and the like, and can be made of any material. A box of this invention can be utilized for a variety of different storage applications and can be used in any kinds of environment in which a box would be used.

A lapboard siding and trim system is provided in which trim siding components for board-and-batten siding and associated trim components are manufactured using a co-extrusion process, whereby wood / thermoplastic resin composite material and polyvinyl chloride thermoplastic resins are co-extruded through a single die assembly, thereby producing a trim piece having a plastic composite component, that will be visible following installation, fused under heat and pressure to the polyvinyl chloride standoff and attachment fins, that will be hidden following installation. Also provided is a lapboard siding and trim system in which siding components for clapboard siding are manufactured by extruding wood / thermoplastic resin composite material through a die. Associated trim components are manufactured using the co-extrusion process described above. The siding and trim components are completely waterproof, and installation proceeds with almost no face nailing and almost no caulk.

An improved mechanic's creeper apparatus for use when working under a vehicle and the like includes a frame having an upper end, lower end, right side, and left side frame portions. A contoured deck or body platform is supported between the right and left sides. Each side bears at least three casters with wheels arranged in a non-collinear arc to prevent capture in a crack or expansion joint on the floor of the workplace. The upper end carries a height-adjustable headrest which remains parallel to the plane of the body platform when raised.

The present invention is directed to cups, containers, and sleeves therefore having a living hinge and a dual seal structure on the lid such that the seal created by the contact of the lid with the inside of the cup or container ensures a secure, friction fit orientation to prevent spillage or leakage of the contents therein. The dual seal is created by a first component on the lip of the lid that extends down from the top of the lid and is substantial in shape with a rib on the bottom edge of the lip and the circumference of the lip that is of the same size and shape as the inner circumference of the cup or container such that a secure seal is created when closed. The cups and containers also have an inner concentric structure that follows the shape of the cup or container just above the base to offer stabilization, and ease of stacking, removal, and manufacture.

In the repair of a blisk or blisk drum, the damaged airfoils are completely cut off at the same low-stress nodal line peculiar to the respective blade type, except for a blade stump (2), and are each replaced by a new blade repair element (3) of a same shape and size which is accurately clamped onto the blade root by a ledge (5) formed onto its mating end, with this ledge (5) also serving for fixation of the processing fixtures and stabilization of the thin airfoil, and is then welded to the blade root and subsequently subjected to a cutting or non-cutting operation for removal of the ledge (5). This highly efficient repair method can similarly also be applied to the new manufacture of blisks.

A combustion chamber of a combustion system comprises a combustion space, a support structure, a heat shield, and at least one through-opening. The heat shield has at least two segments, and each segment has an edge region, a gap communicating with the combustion space being formed between edge regions of adjacent segments, and a retaining device. The adjacent segments include a support element disposed in a bottom region of the gap. The retaining device fixes the respective liner element on the support structure via the respective support element. The at least one through-opening communicates with the gap so as to enable a cooling gas to flow through the through-opening. The at least one through-opening is disposed in at least one of the respective edge region and the support element at the bottom region of the gap.

The present invention is directed to cups, containers, and sleeves therefore having a living hinge and a dual seal structure on the lid such that the seal created by the contact of the lid with the inside of the cup or container ensures a secure, friction fit orientation to prevent spillage or leakage of the contents therein. The dual seal is created by a first component on the lip of the lid that extends down from the top of the lid and is substantial in shape with a rib on the bottom edge of the lip and the circumference of the lip that is of the same size and shape as the inner circumference of the cup or container such that a secure seal is created when closed. The cups and containers also have an inner concentric structure that follows the shape of the cup or container just above the base to offer stabilization, and ease of stacking, removal, and manufacture.

The present invention is directed to containers for holding non-food items having a living hinge and a quad or multi seal structure on the lid such that the seal created by the contact of the lid with the inside of the cup or container ensures a secure, friction fit orientation to prevent spillage or leakage of the contents therein. The quad or multi directional seal is created by multiple ribs on the lid that securably fit within the base of the container and indentations oriented in the bases, or by multiple ribs on the lid that securably fit within a channel structure in the top of the base of the container, the channel structure having the indentations in order to create a secure fit.

In the repair of a blisk or blisk drum, the damaged airfoils are completely cut off a low-stress nodal line of the respective blade, except for a blade stump (2), and are each replaced by a new blade repair element (3) of a same shape and size which is accurately clamped onto the blade root by a ledge (5) formed onto its mating end, with this ledge (5) also serving for fixation of the processing fixtures and stabilization of the thin airfoil, and is then welded to the blade root and subsequently subjected to a cutting or non-cutting operation for removal of the ledge (5). This highly efficient repair method can similarly also be applied to the new manufacture of blisks.

The invention discloses a method for detecting the leakage of cooing walls by using a self-made pressurization leakage detector. The method comprises the following steps: changing the hard connectionof a U-shaped steel pipe of a cooling wall water inlet and outlet tube between a tenth-stage cooling wall and a sixteenth-stage cooling wall of a blast furnace into connection using the flexible connection structure of a quick connector, carrying out pressurization leakage detection layer by layer, using a metal flexible tube quick connector and continuing normal circulation cooling if the leakagedetection result is good in order to carry out connection, carrying out grouting sealing if a leakage detection result is severe damage, and carrying out industrial water poling maintenance if the damage degree is small. The cooling wall pressurization leakage detector comprises a quick connector female buckle, the outside end of the quick connector female buckle is connected with a flange through a flexible tube, the center of the flange is connected with a steel tube with the diameter being 32 mm and the length being 200 mm, a ball valve is arranged at the tail end of the steel tube, the tube body of the middle part of the steel tube is connected with a steel tube with the diameter being 15 mm and the length being 100 mm, and the steel tube is sequentially provided with a ball valve anda pressure gauge from bottom to top.

An inner lining for the steel shell of a carbothermic reduction furnace for the production of alumina has a base layer of graphite and a coating layer of refractory material. The refractory material is corundum (Al2O3) bound by Sialon (Si.Al.O.N). The lining structure provides protection against the molten slag and it is not attacked by the CO-rich melt furnace atmosphere. Further, the lining does not contaminate the melt and it provides an effective heat dissipation system in case of a power shut-off.

Unattached elastic portions of an elasticised web are grasped and raised above a support surface for feeding the elasticised web. The raised portions are brought into contact with a knife blade that is positioned to protrude through the thickness of the raised elastic layer into free space so as to remain spaced from the support surface that is moving beneath the blade in a direction normal to the support surface. The raised elastic layer is held raised during trimming with the knife blade by an elevation element over which the elastic layer runs. A grasping device holds the unattached portion being cut in a taut state in the cross machine direction. The elastic layer thus spans across the elevation element and the grasping device. The knife blade extends through the thickness of the elastic layer along the spanned part of the elastic layer into free space.

A method for hard-material coating or heat treatment of the blade airfoils of blisks for gas turbines provides for partial heat-insulation and cooling of the other blisk parts during the respective process to prevent their properties from being changed by the high temperatures. The apparatus required for this method comprises two or more cooling plates (5 to 7) which are thermally insulated on their outer surfaces and include supporting flanges (20) which heat-conductively locate the blade platforms (3) of the blisks (1). Radially extending cooling medium channels (16) are provided in the cooling plates connected to a cooling medium source to continually apply cooling medium to the inner surfaces of the supporting flanges and the blade platforms.