1372results about How to "Maintain strength" patented technology

Disclosed is a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with a plurality of bonded diamond or diamond-like crystals forming a continuous diamond matrix that has a diamond volume density greater than 85%. Interstices among the diamond crystals form a continuous interstitial matrix containing a catalyzing material. The diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process. The diamond matrix body has a working surface, where a first portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and a second portion of the interstitial matrix in the body adjacent to the working surface contains the catalyzing material. The first portion of the interstitial matrix and the second portion of the interstitial matrix have substantially the same impact strength.

The present invention provides a structure of a rotor for a generator in which a rotor capable of being ground very easily with a high accuracy is incorporated. This structure of a rotor comprises a rotor mounted fixedly on a rotary shaft supported rotatably on housings. The rotor comprises cylindrically arranged members in which segmental members of permanent magnets are assembled together cylindrically, and an outer cylinder provided on an outer circumference of the cylindrically arranged members and comprising windings or woven cloths of fibers. A resin material capable of being ground is packed in clearances between the cylindrically arranged members and outer cylinder and in the clearances in the outer cylinder.

The present invention discloses an adjustable forehead support for a nasal or full-face mask wherein the forehead support may be adjusted for the different shapes and sizes of a facial profile. The forehead support utilizes a dual-arm system that adjusts the position of the forehead support vis-á-vis the mask and / or airflow tube. The angle of the mask to the face may be adjusted with the present invention.

A jet generator includes a casing containing a gas and having an opening, vibrators attached to the casing, and actuators for actuating the vibrators. The vibrators vibrate with the vibrational forces thereof being synthesized so as to attenuate each other, thereby vibrating the gas to eject a pulsating jet thereof through the opening.

A tear open package for a catheter having an insertion end and a funnel end includes a pair of thin elongated sheets of gas impermeable material joined about their edges by a perimeter heat seal. The elongated sheets of material form a catheter-receiving cavity in which the catheter insertion end is near one end of the cavity and the funnel end is near the other end of the cavity. The perimeter heat seal includes at least an insertion end heat seal, a funnel end heat seal, and a pair of side heat seals which extend along each side of the package from the insertion end heat seal to the funnel end heat seal. The elongated sheets of material each include a tear line extending at least from one side of the package toward the other side of the package through at least one of the side heat seals. The tear lines extend between the catheter insertion end and the insertion end heat seal for opening at least the insertion end of the package by controlled tearing for removal and use of the catheter.