Abstract:
A method of making a pump housing that is net-molded and immediately assumes its final shape and design specification without requiring more than de minimis secondary machining processes. The method utilizes molds and cores configured such that none of the fluid ports of the housing produced using the molds and cores have any intersecting geometry. The net-molded pump housing may also include a cross-tube insert providing flow communication between a fluid inlet port and a pressure relief port.
Abstract:
A process from tempering large aluminum lithium alloy component parts to achieve high strength capability and resistance to stress corrosion cracking without the need for the prior art step of cold working the alloy components parts. The process achieves the desired material properties by the use of two novel soaking time periods and the use of novel controlled temperature selection at the two respective soaking times as well as carefully controlling the temperature decrease from one soaking time period to the other.
Abstract:
A method of forming a dome from a substantially round blank having a surface area smaller than the surface area of the dome includes the steps of shear forming the blank (30) on a rotatable flat-nosed conical mandrel (31) to form a deformed blank (35), spin stretching the deformed blank in selected areas along its circumference to form a stretched blank (40), inside spinning the stretched blank into a rough dome (42) within a concave dome mandrel (41), and finish spinning the rough dome on a rotatable convex dome mandrel (51) into the finished dome (53). Predetermined portions of the blank are heated in each forming step.
Abstract:
A coil assembly (10) includes a plastic bobbin (12) with wire (30,32) coiled thereon and coupled to the pins (38, 48, 54) of a connector (40). Plastic overmolding (60) covers wires (30,32) within bobbin (12) and fixes connector (40) relative to bobbin (12). A polyester bobbin (12) is made by injecting polyester into a mold having cavities (101, 151) to define the outer circumference of the bobbin and surrounding an arbor (106, 160) to define the inner circumference of the bobbin. The arbor (106, 160) with the molded bobbin (12) is removed from between the cavities (101, 151) and the bobbin (12) is slid laterally off the arbor by applying generally uniform pressure about a lateral edge (20, 22) of the bobbin so as not to warp same during the removal process.
Abstract:
A cluster assembly wherein a block has three longitudinal passageways. Connector clips are inserted into those passageways. The block has transverse holes in a front wall providing a communication to the clips so that pins from a header can pass through the holes and be connected to the clips. One of those holes has a boss surrounding it to improve the assembly of the cluster assembly to the three-pin header.
Abstract:
L'ensemble mécanique décrit comprend un bloc dans lequel sont ménagés trois passages longitudinaux, où sont insérées des pinces connectrices. Le bloc comporte des trous transversaux ménagés dans une paroi frontale, ce qui assure une communication avec les pinces, de sorte que les broches d'un collecteur puissent passer à travers les trous et être reliées aux pinces. L'un de ces trous est entouré par un bossage destiné à améliorer l'assemblage de l'ensemble mécanique avec le collecteur à trois broches.
Abstract:
A cluster assembly for application to a three prong header from the interior of a hermetically-sealed compressor. The cluster assembly includes an insulated block having spaced parallel passages in which connector clips with leads attached are disposed. The block has flanges at the ends of the passageways from which the leads project, the flanges having notches. The leads are placed in the notches and are twisted to lie outside the surfaces of the block, the block when applied spacing the leads away from the compressor housing.