Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 4163654 | Method of manufacturing graded index optical fibers A process is disclosed for making an optical fiber having a graded index glass core enveloped by a cladding material. The ingredients from which the peripheral part of the core glass is to be formed are placed in a closed tube of the cladding material whi... | 08/07/1979 |
| 4157906 | Method of drawing glass optical waveguides A method of making glass optical waveguides by the flame hydrolysis technique. Particles of glass soot produced by flame hydrolysis are deposited on the outside surface of a mandrel to form a porous preform. The soot particles closer to the mandrel have a... | 06/12/1979 |
| 4155733 | Optical fibre manufacture A continuous flow process is disclosed in which optical fibre is made by a method involving the chemical vapor deposition of material upon the bore of a tube. The tube is fabricated from an annular crucible around a vertical gas feed and is lowered throug... | 05/22/1979 |
| 4154592 | Method of drawing optical filaments A method of forming an article such as an optical waveguide filament by disposing a draw blank in a cylindrical muffle. The muffle is heated to a temperature sufficient to cause a first end of the blank to reach the drawing temperature of the material the... | 05/15/1979 |
| 4140505 | Method of manufacturing a limited mode optical fiber A single mode optical fiber having a central core region of uniform composition and thickness and core end regions each having a core with a graded composition and increasing thickness. The fiber towards the ends of the fiber maintains a constant normaliz... | 02/20/1979 |
| 4135902 | Method and apparatus for drawing optical fibers A laser beam (FIG. 1; 28) is reflected from a first oscillating galvanometer controlled mirror (14) onto a second oscillating galvanometer controlled mirror (15). The laser beam is reflected from the second mirror as a pattern (29) having an annular cross... | 01/23/1979 |
| 4129433 | Fabrication of an optical fiber waveguide with periodic variations in diameter An optical fiber is drawn from an appropriate preform using a laser whose output power is varied periodically at a rate greater than ten times a second. A fiber drawn in this manner has periodic variations in diameter which enhance the mode conversion pro... | 12/12/1978 |
| 4126436 | Apparatus for minimizing drawn filament diameter variation An apparatus is disclosed for drawing glass optical waveguide filaments having minimal diameter variation. A draw blank is supported within an elongated, heated, tubular muffle which heats the blank to its draw temperature. Gas is supplied to that end of ... | 11/21/1978 |
| 4118211 | Method of maintaining the strength of optical fibers The mechanical strength of an optical fiber is maintained by coating the er with an inorganic ceramic material that is impervious to both moisture and chemically corrosive environments. The ceramic coating is applied immediately after the fiber is drawn.... | 10/03/1978 |
| 4110090 | Method of forming optical fibers A process is described for forming glass optical fibers by heating a glass composition to vaporize a component of the composition at the surface to reduce the refractive index of the glass surface. Four alternative processes can be used: heat treating a f... | 08/29/1978 |
| 4102661 | Caustic ray use of the drawdown zone of an optical fiber preform to control the drawing of the fiber A technique for monitoring the drawdown zone of an optical fiber preform is disclosed. The technique involves detecting the caustic rays emanating from the drawdown zone. Analysis of these rays allows one to determine the geometric properties of both the ... | 07/25/1978 |
| 4101300 | Method and apparatus for drawing optical fiber For drawing an optical fiber from an optical fiber preform there are provided means for heating an optical fiber preform, means for pulling out an optical fiber from the optical fiber preform whose fore end part has been fused by heating, and means for ca... | 07/18/1978 |
| 4061484 | Process for producing gradient fibers A process for the production of gradient fibers of glass by depositing layers of glasses having selected indices of refraction and then drawing fibers therefrom. The process is carried out by sequentially introducing a plurality of glass masses to form la... | 12/06/1977 |
| 4046537 | Method for the production of one-material optical fibers A method for the production of single-material optical fibers having a light conducting core supported within a protective sleeve by at least one extremely thin support component characterized by providing a blank having a core and at least one support co... | 09/06/1977 |
| 4046536 | Monitoring and control of optical fiber diameters The diameters of successive axial portions of an optical fiber being drawn are monitored and controlled by an optical measuring technique in such manner as to eliminate the effects of occasional, anomalous measurements or "dropouts". Measurement validity ... | 09/06/1977 |
| 4030901 | Method for drawing fibers A method for drawing silica fibers utilizing an electrical resistance furnace includes the steps of heating a preform so that it begins to flow forming a fiber; pulling the fiber from the furnace; and flushing the preform and the fiber within the furnace ... | 06/21/1977 |
| 4028081 | Method for manufacturing helical optical fiber An optical cable which is relatively immune to the effects of bending and/or tension comprises a helical optical fiber loosely confined within a protective sheath. Apparatus is disclosed for fabricating the helical fiber. For example, as the fiber is draw... | 06/07/1977 |
| 4021217 | Detecting optical fiber defects Optical fibers in long line communication links fail often in tensile strength. Analysis of tensile properties reveals a variation in tensile strength with fiber length, pointing to uncommon structural defects randomly occurring along the fiber length. Fa... | 05/03/1977 |
| 4012213 | Apparatus for forming refractory fibers Apparatus for forming fibers of refractory materials. A melt volume is continuously formed on a feed rod of the material to be fiberized and a fiber drawn therefrom. The melt volume is formed by introducing the feed rod at a predetermined velocity into a ... | 03/15/1977 |
| 4002512 | Method of forming silicon dioxide A method of depositing a layer comprising SiO2 on a surface of a substrate at a rate which is temperature independent is disclosed. The method includes combining dichlorosilane (SiH2 Cl2) with an oxidizing gas, such as O | 01/11/1977 |
| 3980459 | Method for manufacturing optical fibers having eccentric longitudinal index inhomogeneity In a chemical vapor deposition (CVD) process for manufacturing a fiber optic preform, a glass rod is inserted into the preform during the deposition of the core layer. This yields a fiber having a longitudinal eccentric index inhomogeneity which is close ... | 09/14/1976 |
| 3933455 | Method for joining optical fibre bundles Misregistration and losses between the ends of coupled optical fibre-bundles are reduced by tapering the fibre ends. The ends are etched to remove a portion of the outer cladding glass around each glass core. The tapered ends are inserted into a low refra... | 01/20/1976 |
