Abstract: The present invention provides electrically conductive sheet materials that contain columns of electrically conductive particles aligned to form continuous columns between lateral faces of the conductive sheet material. The particle columns are arranged so that the sheet is conductive through the thickness, but is electrically insulating in lateral directions. The present invention also provides methods by which such electrically conductive sheet materials can be made. The present invention is able to provide conductive pathways in a precise, regular array, at a very fine pitch.
May 19, 1995
Date of Patent:
June 4, 1996
Minnesota Mining and Manufacturing Company
Abstract: Methods for forming an orientation film comprising a first step wherein a silane coupling agent is chemically adsorbed on a substrate surface, and a second step wherein an organic compound comprising a functional group capable of coupling with the silane coupling agent is coupled with the silane coupling agent. The second step includes a) applying a magnetic or electrical field in a selected direction to a mixture of 1) a liquid crystal compound being in a liquid crystal phase when heated and 2) the organic compound, b) contacting the substrate with the mixture which is in the applied magnetic or electrical field, and c) heating the mixture which is contacted with the substrate to a temperature sufficient for coupling of the silane coupling agent and the organic compound during the magnetic or electrical field application. The organic compound coupled with the silane coupling agent is directed toward a direction corresponding to the selected direction of the magnetic or electrical field.
Abstract: An applicator with a surface having a first wetting angle and a first surface area, which surface area has grafted thereto a layer of ion-producing gas plasma having a second wetting angle and a second surface are, wherein the second wetting angle is less than the first wetting angle and the second surface area is greater than the first surface area.
Abstract: A method of delivering a substance into a material mass including the steps of subjecting a first fluid to a magnetic influence such that the molecules of the first fluid become linearly organized and the first fluid is charged to a positive or negative polarity, introducing the first fluid into the material mass for absorption throughout its interior, subjecting a second fluid to another magnetic influence such that the molecules of the second fluid become linearly organized and the second fluid is charged to a polarity opposite that of the first fluid, and introducing the second fluid into the material mass for absorption therein, whereby the permeability of the fluids into the material mass is greatly enhanced by reason of the linear organization of the fluid molecules, and the naturally attractive forces between the oppositely charged fluids produces a rapid, complete and directed absorption of such polarized fluids throughout the interior of the material mass.
Abstract: A method for controlling coating weight on a hot-dipped steel strip comprises the steps of positioning at least one pair of high-frequency (alternating) current conducting paths near one side of a steel strip and near another side of the steel strip drawn out of a coating bath, each of the high-frequency (alternating) current conducting paths being parallel with a surface of the steel strip above the coating bath, and flowing a-high-frequency (alternating) current strong enough to magnetically saturate the steel strip through the at least one pair of high-frequency (alternating) current conducting paths to induce a high-frequency (alternating) current of an opposite phase in the steel strip, a magnetic pressure acting on surfaces of the steel strip being generated by an interaction of the induced high-frequency (alternating) current with a high-frequency (alternating) current of the high-frequency (alternating) current conducting paths.
Abstract: An apparatus for and method of coating an article by the use of electro-static attraction of ionized particles which are subsequently cured. The apparatus includes a first foraminous conveyor for carrying the article through a powder coating zone and a second conveyor for carrying the article through a curing zone. The surface of the article which rests on the foraminous conveyor is cleaned of particles as the article is transferred from the first foraminous conveyor to the second conveyor. The first foraminous conveyor is also cleaned of particles after the article has been transferred. After the articles have been cured to form a coating on the article, the article is put through the coating system again except that the article is supported on the conveyor so that the surface which was not coated in the first pass through the system is out of contact with the conveyor.
Abstract: Porous solid bodies, especially carbon bodies, are densified by chemical vapor deposition by establishing a thermal gradient within the body, thermally decomposing a gaseous precursor so deposit an electrically and thermally conductive deposit (e.g. carbon) within the body, and shifting the thermal gradient toward the lower temperature zone as deposition proceeds, by means of induction heating.
August 11, 1993
Date of Patent:
September 20, 1994
Ilan Golecki, Robert C. Morris, Dave Narasimhan
Abstract: In the manufacture of an article such as optical fiber which includes a light energy cured coating material, fiber (21) is drawn from a preform (22) and coating with one or preferably two layers (42,44) of light curable coating materials. Afterwards, the coating materials are cured. Increases in manufacturing line speed may be achieved if the cure speed of the coating materials is increased. This is accomplished by the simultaneous application of a magnetic field during irradiation of the curable coating materials to enhance the crosslinking of the coating materials by a free radical polymerization mechanism. Upon absorption of light, a photoinitiator in each composition cleaves to produce two free radical fragments in the spin paired or singlet state. The magnetic field has the effect of enhancing the production of spin parallel radicals which enhances the polymerization initiation of the coating material, thereby allowing an increase in the manufacturing line speed through drawing and coating apparatus.
Abstract: A process with its corresponding device for the obtainment of a laminar body with therapeutic aims. The laminar body is provided with a first magnetizable impression in the form of a mesh pattern, and a second impression of bipolar geometric form and created of magnetite-rich ink is formed as a core within each ring which makes up the mesh. The impressions are magnetized by displacing the laminar body through the air gap of a magnetizer. Polymerizing and fixing of the resin incorporated in the ink occurs by displacing the laminar body across a forced air heater, followed by gathering of the marked and polymerized laminar body onto a bobbin which determines the linear velocity of the laminar body.