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Class Information
Number: 250/227.15
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light conductor > Condition responsive light guide (e.g., light guide is physically affected by parameter sensed which results in light conveyed to the photocell) > With detection of macroscopic break in fiber
Description: Subject matter wherein the detector and a light conducting fiber are positioned, configured or arranged so that light is coupled to or away from a detector if there is a break in the fiber to sense the presence of a break.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7411176 |
Method and apparatus for examining corrosion of tendon embedded in concrete |
Aug. 12, 2008 |
| 7393145 |
Fault location in optical networks |
Jul. 1, 2008 |
| 7373056 |
High-voltage component with optical fiber and method for producing it |
May. 13, 2008 |
| 7326916 |
Optical submarine transmission system |
Feb. 5, 2008 |
| 7211783 |
Tamper-proof container |
May. 1, 2007 |
| 7189959 |
Fiber optic impact detection system |
Mar. 13, 2007 |
| 7157692 |
Fiber optic tester |
Jan. 2, 2007 |
| 7098444 |
Tamper proof container |
Aug. 29, 2006 |
| 7068424 |
Multiple pulse generation |
Jun. 27, 2006 |
| 7060966 |
Fiber optic tester |
Jun. 13, 2006 |
| 7026603 |
Fault locator for testing a complex optical circuit |
Apr. 11, 2006 |
| 6995353 |
Tamper-proof container |
Feb. 7, 2006 |
| 6930813 |
Spatial filter source beam conditioning in ellipsometer and the like systems |
Aug. 16, 2005 |
| 6924474 |
Light leakage detecting device of an optical transmission system using fiber optic cable |
Aug. 2, 2005 |
| 6778717 |
Apparatus and method for monitoring a structure using a counter-propagating signal method for locating events |
Aug. 17, 2004 |
| 6778716 |
Method and apparatus for MEMS optical sensing using micromirrors |
Aug. 17, 2004 |
| 6756580 |
Fiber grating bond joint health monitoring system |
Jun. 29, 2004 |
| 6734411 |
Method and apparatus for controlling power levels of optical signals in optical fiber interconnects |
May. 11, 2004 |
| 6492636 |
Large scale high speed multiplexed optical fiber sensor network |
Dec. 10, 2002 |
| 6472655 |
Remote amplifier for an optical transmission system and method of evaluating a faulty point |
Oct. 29, 2002 |
| 6456685 |
Method and apparatus for cutting waveguides to precise differential lengths using time-domain-reflectometry |
Sep. 24, 2002 |
| 6452157 |
Apparatus integrated in a fiber processing machine for recognizing and processing impurities |
Sep. 17, 2002 |
| 6304713 |
Optical fiber seal verifying system |
Oct. 16, 2001 |
| 6194707 |
Automatic laser shutdown method and apparatus in optical transmission system |
Feb. 27, 2001 |
| 6148123 |
Method and apparatus for measuring optical distances |
Nov. 14, 2000 |
| 6134281 |
Method and apparatus for calibration of a signal processing system utilizing digital down converters |
Oct. 17, 2000 |
| 5965877 |
Photoluminescence built-in-test for optical systems |
Oct. 12, 1999 |
| 5965876 |
Apparatus and method for detecting optical fiber fault location |
Oct. 12, 1999 |
| 5960129 |
Method and apparatus for detecting liquid and gas segment flow through a tube |
Sep. 28, 1999 |
| 5945668 |
Fiber optic system with open fiber safety interlock |
Aug. 31, 1999 |
| 5903221 |
Method and apparatus for determining the moisture level in a buried splice |
May. 11, 1999 |
| 5883988 |
Optical module including a photoreception device |
Mar. 16, 1999 |
| 5870511 |
Fiber optic temperature sensor |
Feb. 9, 1999 |
| 5778114 |
Fiber analysis method and apparatus |
Jul. 7, 1998 |
| 5771114 |
Optical interface with safety shutdown |
Jun. 23, 1998 |
| 5742715 |
Optical fiber status analyzer and related methods |
Apr. 21, 1998 |
| 5729012 |
Photoluminescence built-in-test for optical systems |
Mar. 17, 1998 |
| 5723857 |
Method and apparatus for detecting cracks and strains on structures using optical fibers and Bragg gratings |
Mar. 3, 1998 |
| 5708500 |
Multimode optical time domain reflectometer having improved resolution |
Jan. 13, 1998 |
| 5701374 |
Integrated optical module including a waveguide and a photoreception device |
Dec. 23, 1997 |
| 5652810 |
Fiber optic sensor for site monitoring |
Jul. 29, 1997 |
| 5572016 |
Photoluminescence built-in-test for optically initiated systems |
Nov. 5, 1996 |
| 5567933 |
Optical fiber detection system with disturbance and positive cut-loop detection capabilities |
Oct. 22, 1996 |
| 5567932 |
Geomembrane barriers using integral fiber optics to monitor barrier integrity |
Oct. 22, 1996 |
| 5531290 |
Safety apparatus for fuel tank |
Jul. 2, 1996 |
| 5528698 |
Automotive occupant sensing device |
Jun. 18, 1996 |
| 5525796 |
Fiber optic sensing apparatus for detecting a fracture in a metallic workpiece and an associated method of attaching a fiber optic sensing element to the metallic workpiece |
Jun. 11, 1996 |
| 5500730 |
Method and apparatus for determining the distance to a reflective event |
Mar. 19, 1996 |
| 5491574 |
Optical signal transmission network |
Feb. 13, 1996 |
| 5461926 |
Single-ended optical fiber strain sensor for measuring maximum strain |
Oct. 31, 1995 |
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