| Patent Number |
Title Of Patent |
Date Issued |
| 6767205 |
Housing for an optical fiber preform torch |
July 27, 2004 |
| A torch and mount assembly wherein the torch, which has a plurality of gas receiving nipples is carried in a housing through which it extends. The housing has a plurality of walls forming a substantially air tight enclosure. In at least one wall of the housing are one or more leakproof |
| 5397372 |
MCVD method of making a low OH fiber preform with a hydrogen-free heat source |
March 14, 1995 |
| A method for making a glass preform substantially free of OH impurities is disclosed. The method comprises the steps of introducing a moving stream of a vapor mixture including at least one compound glass-forming precursor together with an oxidizing medium into a tube, while generating a |
| 5221306 |
Method and apparatus for modifying the transverse cross section of a body |
June 22, 1993 |
| The transverse cross section of a body is modified by the steps of: a) determining the extent to which the body has material in excess of a desired shape at a plurality of points, b) exposing the body to a local heat source having a temperature sufficiently high to remove material from |
| 5000771 |
Method for manufacturing an article comprising a refractory dielectric body |
March 19, 1991 |
| To attain high strength optical glass fibers, the glass preforms, from which the fibers are drawn, must generally be free of surface imperfections such as bubbles, and air lines. It has been discovered that these imperfections can be removed quickly and cleanly by contacting the pref |
| 4638129 |
Control switch cover |
January 20, 1987 |
| The present invention is an externally installed control switch cover assembly to be used with equipment with a ribbed edge and the control switch located adjacent to the ribbed edge. More particularly, the present invention may be used on an IBM-PC computer to cover, protect and lock |
| 4582480 |
Methods of and apparatus for vapor delivery control in optical preform manufacture |
April 15, 1986 |
| A vapor delivery system for the manufacture of an optical preform includes a deposition bubbler (60) and another bubbler (40) referred to as a supply bubbler which is interposed between a reservoir (24) of a liquid and the deposition bubbler. Heat energy is applied to the supply bubbler |
| 4554078 |
Methods of and apparatus for effluent disposal |
November 19, 1985 |
| An open end (61) of a tube (62) is disposed below a free surface of a treating solution (60) which is capable of reacting with a liquid effluent to provide a disposable reaction product. A pressurized gas which is non-reactive with the effluent and with the treating solution causes the |
| 4501442 |
Apparatus for supplying fluid to a rotating tube |
February 26, 1985 |
| A sealed rotary joint and method are described wherein a purge fluid is passed over a tube rotating within an end cap and through a ball bearing component of the joint. |
| 4486214 |
Methods of and apparatus for collapsing a preform tube into a preform from which lightguide fibe |
December 4, 1984 |
| A lightguide fiber preform is made by depositing optically suitable layers of doped silicon dioxide on an inner wall of a rotating glass substrate tube (31) which is exposed to a moving zone of heat during a deposition mode and during a mode when the tube is collapsed. During each of a |
| 4477273 |
Method of and apparatus for straightening and configuring a preform tube from which lightguide f |
October 16, 1984 |
| A preform from which lightguide fiber is drawn is made by depositing optically suitable layers of doped silicon dioxide on an inner wall of a rotating glass substrate tube which is exposed to a moving zone of heat during a deposition mode and during a collapse mode. During at least a |
| 4412853 |
Method of making optical waveguide fiber preform starter tubes |
November 1, 1983 |
| A glass tube is formed having a mean cross-sectional tube wall area less than a preselected mean cross-sectional area. Additional glass differing in composition from that of the glass tube, but having an index of refraction substantially equal to that of the glass tube, is then fused |
| 4412683 |
Apparatus for supplying fluid to a rotating tube comprising end cap with purging fluid |
November 1, 1983 |
| Apparatus for supplying fluid to a rotary tube uncontaminated with ambient air comprises an end cap having an open ended bore in which an end portion of the tube may be rotatably positioned, a first conduit extending into the end cap through which fluid may be fed into the rotary tube, a |
| 4389231 |
Method for supplying fluid to a rotating tube |
June 21, 1983 |
| A sealed rotary joint and method are described wherein a purge fluid is passed over a tube rotating within an end cap and through a ball bearing component of the joint. A vapor stream including a vaporized glass forming precursor entrained in an oxidizing carrier gas is passed into a rot |
| 4347069 |
Method of supplying fluid to a rotating tube |
August 31, 1982 |
| A method of introducing a vapor stream into a rotating optical fiber preform tube comprising the steps of: (a) generating a vapor stream comprised of a vaporized glass forming precursor entrained in an oxidizing carrier gas; (b) flowing the vapor stream into the rotating optical fiber |
| 4278459 |
Method and apparatus for exhausting optical fiber preform tubes |
July 14, 1981 |
| Methods and apparatuses are disclosed for exhausting reaction products from an optical fiber preform tube and for choking off the preform tube during collapse wherein an exhaust tube (40) is provided with an entry end (41) located adjacent and in fluid communication with a downstream end |
| 4276243 |
Vapor delivery control system and method |
June 30, 1981 |
| A method is disclosed for controlling the delivery of vapor from a bubbler containing a supply of liquid through which a carrier gas is bubbled and from which bubbler vapor is delivered in a vapor stream entrained with the carrier gas. The method comprises the steps of sensing the ratio |
| 4235829 |
Vapor delivery system and method of maintaining a constant level of liquid therein |
November 25, 1980 |
| A vapor delivery system is disclosed comprising a bubbler 12 is adapted to generate and deliver vapors from a vaporizable liquid contained therein, and a reservoir 30 in fluid communication with the bubbler 12 from which liquid may be continuously fed into the bubbler to replenish liquid |
| 4231777 |
Methods of and apparatus for heating a glass tube |
November 4, 1980 |
| In order to react gases and/or vapors to deposit optically suitable layers of doped silicon dioxide on an inner wall of a glass substrate tube to produce a preform from which optical fibers are drawn, the glass tube is heated by a mixture of combustible gases. The combustible gases are |
| 4220460 |
Vapor delivery system and method |
September 2, 1980 |
| A system for generating and delivering vapors to a vapor deposition station is disclosed which comprises a bubbler 10 adapted to contain a supply of liquid, a bubbler heater 14 thermally coupled with the bubbler and electrically coupled with a heater controller, a temperature controlled |
| 4174842 |
Non-contacting seal for treating chamber through which elongated material is moved |
November 20, 1979 |
| A device (80) for sealing a furnace (50) which is used to draw a fiber (52) from a rod-like preform (51) includes a housing (82) having a cavity (121) for receiving a disc (111). The disc (111) is suspended for movement in the cavity in a plane lateral to the preform that extends through |
