Abstract: An accumulator assembly comprises an accumulator cylinder formed of a cylindrical, gas-impermeable shell and a cylindrical gas-impermeable sleeve disposed within and substantially concentric with the shell. An interstitial space is formed between the sleeve and the shell. A piston slidably is disposed within the sleeve, the piston separating an interior of the sleeve into a first chamber configured to contain a compressed gas, and a second chamber configured to contain a pressurized fluid. A pair of removable axial closures retained to the gas-impermeable sleeve at opposing ends and sealingly engaged with corresponding opposing ends of the gas-impermeable shell is configured to provide maximum resistance to the tensional stress of the sleeve.

Abstract: A generally annular retaining ring assembly having a retaining ring and a backing ring, the backing ring having an upper portion, an inner portion, an outer portion and a lower portion, wherein the inner portion, outer portion and the lower portion form a receiving channel configured to receive a plurality of inserts. The backing ring may be made of a polymeric material and the inserts may be made of a material such as, for example, stainless steel, that provides additional rigidity and heat dissipation to the polymeric backing ring. The inserts absorb the deforming forces exerted when the retaining ring assembly is fastened to the carrier head of a polishing device. However, the inserts are secured within the retaining channel in the underside of the backing ring so that the inserts are isolated from the chemicals present during polishing.

Abstract: Retaining rings are presented with specially designed inserts that increase rigidity and improve heat dissipation. Inserts that are more rigid, and that have better ability to conduct heat, are inserted into pockets positioned along the outer portion of the rings. The pockets do not compromise the upper, lower or inner portion of the rings. Because the inserts are more rigid than the material used in the body of the ring, they absorb the deforming forces resulting from fastening the ring to the carrier head. Because they are better conductors than the material used in the body of the ring, the ring is better able to dissipate heat generated during polishing. Moreover, because the inserts are positioned in the outer portion of the ring, the inserts are not exposed to the polishing surface during polishing and therefore are less likely to react undesirably with the chemicals used during polishing.

Abstract: An accumulator assembly comprises an accumulator cylinder formed of a cylindrical, gas-impermeable shell and a cylindrical gas-impermeable sleeve disposed within and substantially concentric with the shell. An interstitial space is formed between the sleeve and the shell. A piston slidably is disposed within the sleeve, the piston separating an interior of the sleeve into a first chamber configured to contain a compressed gas, and a second chamber configured to contain a pressurized fluid. A pair of removable axial closures retained to the gas-impermeable sleeve at opposing ends and sealingly engaged with corresponding opposing ends of the gas-impermeable shell is configured to provide maximum resistance to the tensional stress of the sleeve.

Abstract: The present invention is a three forward speed gearbox with reverse from a single planetary gearset. The forward speed ratios include a low gear, one to one, and overdrive. The reverse gear ratio is identical with the low gear. Forward rotation of the output shaft in first gear is accomplished by reversing the direction of the input motor. This is easily achieved from a bi-directional prime mover such as a hydraulic motor or electric motor. Another advantage of using a bi-directional prime mover is that the bi-directional rotation of the input shaft provides forward, reverse and back drive to accumulate energy in an accumulator.

Abstract: Retaining rings are presented with specially designed inserts that increase rigidity and improve heat dissipation. Inserts that are more rigid, and that have better ability to conduct heat, are inserted into pockets positioned along the outer portion of the rings. The pockets do not compromise the upper, lower or inner portion of the rings. Because the inserts are more rigid than the material used in the body of the ring, they absorb the deforming forces resulting from fastening the ring to the carrier head. Because they are better conductors than the material used in the body of the ring, the ring is better able to dissipate heat generated during polishing. Moreover, because the inserts are positioned in the outer portion of the ring, the inserts are not exposed to the polishing surface during polishing and therefore are less likely to react undesirably with the chemicals used during polishing.

Abstract: An electrical connection is provided for connecting electrically transmitting cables and/or wires to one another or any other component in a manner that provides an environmentally sealed connection. The electrical connection includes an electrical connector for connecting electrical cables or wires that includes seals which are disposed in grooves in the threaded portions of the electrical connector. The electrical connector may also include a second set of grooves separated from the first set of grooves, in order to cause moisture and other debris to migrate away from the seals. When the end connectors of electrical cables or wires are connected to the electrical connector, the interior threads of end connectors cover and deform the surface of the seals to create an enhanced seal between the connector and the end connectors.

Abstract: An electrical connection is provided for connecting electrically transmitting cables and/or wires to one another or any other component in a manner that provides an environmentally sealed connection. The electrical connection includes an electrical connector for connecting electrical cables or wires that includes seals which are disposed in grooves in the threaded portions of the electrical connector. The electrical connector may also include a second set of grooves separated from the first set of grooves, in order to cause moisture and other debris to migrate away from the seals. When the end connectors of electrical cables or wires are connected to the electrical connector, the interior threads of end connectors cover and deform the surface of the seals to create an enhanced seal between the connector and the end connectors.

Abstract: A compression-type drop wire clamp that avoids damaging a signal carrying portion of a cable by applying a compressive force primarily to a support portion of a cable is disclosed herein. A plurality of holes may be included in a compression portion of the clamp to increase the frictional force between the cable and the clamp. An abrasive coating, such as an enamel and crushed glass mixture, may be added to the clamp to increase the frictional force between the cable and the clamp. Tines or other aligning mechanisms may also be used to center the cable in the clamp and/or to align other portions of the clamp (e.g. a shim).

Abstract: A compression-type drop wire clamp assembly for use in suspending and directing cables and wires relative to supporting structures, such as a poles or buildings, is provided. More specifically, the improved drop wire clamp assembly is designed for use in suspending and directing sensitive cables and wires, such as fiber optic cables and wires. The drop wire clamp assembly includes a tapered housing, a mating tapered slide assembly, a hanger portion for securing the assembly to the supporting structure, and a shim. The housing and the shim each include a longitudinal groove, as well as gripping surfaces. The fiber optic cable, or other electrical cable, is sandwiched between the housing and the shim within the longitudinal grooves of the housing and shim.

Abstract: A universal ground strap assembly including a strap having a series of uniformly sized and spaced apertures to facilitate the installation of the ground strap assembly onto a wide range of structures of various shaped and sized cross-sections is provided. A stud, through which the strap is secured, includes a terminal portion adapted to accommodate and have secured therein a ground wire. The stud includes a curved surface to engage the elongated strap with smooth transition. The stud may be captivated on the strap by at least one projection extending into the hole in the strap within which the stud is held. A curved sliding nut supported upon the strap and a curved surface of the stud are used to form a tight clamping action of the strap about the structure to be grounded, without subjecting the strap to localized stresses or tearing, but permitting the strap to tightly encircle the structure. The curved sliding nut is also captivated on the strap with stops and defines a hole to receive the stud.