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| Number | Title | Issue Date |
| 7363827 | Torque sensor system including an elliptically magnetized shaft A torque sensor includes a shaft and a magnetic sensor. The shaft may have at least one active region having an elliptical magnetization. The magnetic sensor may be configured to sense a magnetic field about the shaft, where the magnetic field is representative of a... | 04/29/2008 |
| 7197926 | Solid state illuminator for bi-color ported water level gauges A solid state illuminator and display means are provided for bi-coloured ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such a device. The illumi... | 04/03/2007 |
| 7174795 | Integrated non-contacting torque and absolute position sensor for steering applications An integrated torque and position sensor is set forth for measuring the relative rotational movement between an input and an output shaft and for measuring the final angle position of the output shaft. The integrated sensor includes a wheel that rotates with the sha... | 02/13/2007 |
| 7163125 | Carafe with contents volume indicator An inexpensive, readily visible indicator for liquid levels in a vacuum bottle that includes a coating of reflective material to minimize radiation heat transfer from the interior of the vacuum bottle to the exterior of the assembly. The vacuum bottle assembly inclu... | 01/16/2007 |
| 7047806 | Liquid level gage and illuminator therefor The present invention provides a liquid level gage and an illuminator therefor. One embodiment of the liquid level gage includes a housing, a liquid column, an illuminator, and a power supply. The housing has a first or front end and a second or rear end. The liquid... | 05/23/2006 |
| 7028545 | Position sensor, designed in particular for detecting a steering column torsion The invention concerns a position sensor, designed in particular for detecting a steering column torsion, consisting of a first magnetic structure including a plurality of magnets and a second magnetic structure including two ferromagnetic rings (6, 7) having... | 04/18/2006 |
| 6938477 | Solid state illuminator for bi-colored ported water level gauges A solid state illuminator and display means are provided for bi-colored ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such a device. The illumin... | 09/06/2005 |
| 6857315 | Armored tubular sight gauge with integral valves and misalignment unions An armored sight gauge assembly of the type having a sight tube that is placed between first and second spaced apart fittings to show a liquid level comprising an elongated main body positioned between and permanently connected to the first and second fittings. The ... | 02/22/2005 |
| 6588272 | Redundant level measuring system A redundant level measuring system comprises a chamber for fluidic coupling to a process vessel whereby material level in the vessel equalizes with material level in the chamber. A float including a magnet in the chamber rises and falls with material leve... | 07/08/2003 |
| 6532815 | Fluid level verification apparatus An improved fluid level verification apparatus which may be manufactured or otherwise fabricated as a kit and assembled at a remote location for use on liquid filled containers and configured to reduce inherent mechanical stresses on the inspection tube a... | 03/18/2003 |
| 6499439 | Modular stamped sight glass assembly A sight glass assembly for a water heater flame trap and a method of making same is disclosed. A rectangular-shaped sight glass frame casing being comprised of a thin metal plate further comprising a rounded rectangular cut-out window and two metal tabs o... | 12/31/2002 |
| 6301961 | Insulated beverage carafe with volume indicator The present invention is directed to an insulated beverage carafe adapted for use in an automatic drip coffee maker fabricated from non-reactive metal, having a heat resistant plastic handle that includes a detachable substantially transparent tubular gau... | 10/16/2001 |
| 6021669 | Container of coolant A container of coolant used in a NIKON™ stepper is utilizing a transparent duct mounted on a side of the container of coolant to check a liquid level. The container of coolant can be conventional or other similar container of coolant.... | 02/08/2000 |
| 6003410 | System and method for determining the amount of refrigerant in a vapor compression system A system and method for measuring a refrigerant in a vapor compression system utilizes a sight glass in fluid communication with the condenser. Refrigerant collects in the sight glass and, upon reaching equilibrium, can be read to provide an accurate meas... | 12/21/1999 |
| 5988701 | By-pass tube member for a by-pass level indicator A by-pass level indicator includes a main tube in communication with a tank via a pair of by-pass tube members, a float containing a magnet and an indicator attachably mounted to the main tube and having a series of magnetic colored flags reacting with th... | 11/23/1999 |
| 5648607 | Replaceable sight gauge system The present invention relates to a replaceable sight gauge system to monitor fluid levels in a reservoir or fluid tank. The sight gauge of the present system is mounted to the wall of a fluid tank by two bolt assemblies. The bolt assemblies, which include... | 07/15/1997 |
| 5628231 | Sight glass construction An improved sight glass for use in determining the level of water in steam boilers and similar installations is disclosed. The end flanges are provided with molded inserts, preferably of PTFE or similar fluorocarbon material which serves to provide a seal... | 05/13/1997 |
| 5611241 | Integral welded sight glass for boilers A sight glass assembly (1) is provided which is securable to a pressure vessel (V). The sight glass assembly includes a body (3) having top, bottom, front, back, and side walls defining a chamber (25) which is in fluid communication with the interior of t... | 03/18/1997 |
| 5442959 | Shielded tubular sight gauge A sight gauge is placed between two spaced apart compression type fittings connected to a vessel to show the liquid level in the vessel. The sight gauge has an elongated tubular transparent tube shield and a slightly longer elongated transparent sight tub... | 08/22/1995 |
| 5297429 | Sanitary sight indicator A sanitary sight indicator for viewing the contents of a production process is provided. The sanitary sight indicator includes a body, an optical unit, and a sanitary connection between the body and the optical unit. The body includes a process-interfacin... | 03/29/1994 |
| 5131264 | Above-ground storage tank liquid leak detector An apparatus for detecting a change in the amount of liquid in a storage tank. The apparatus comprises a vertical upright standpipe for filling with a liquid to a level that generates a hydrostatic head pressure substantially equivalent to that exerted by... | 07/21/1992 |
| 5052224 | Shielded sight gauge for storage tanks A vertically mountable sight gauge is comprised of one or more serially connectable sections for visually determining the level or the volume, or both, of liquid stored in a container. Each section has an upper and lower housing. Each housing has a passag... | 10/01/1991 |
| 5007254 | Additive fluid viewing A clothes washing machine including a cabinet having therein a spin tub rotatably disposed within a stationary drain tub, and an additive liquid dispensing system comprised of a multi-load reservoir of additive liquid connected hydraulically through a pum... | 04/16/1991 |
| 4987777 | Liquid level sight gauge A liquid level sight gauge useful in the fuel tank of a recreational vehicle such as a snowmobile is molded in two parts and can be installed without special tools in simple cylindrical holes provided in the wall of the tank or container. The gauge has a ... | 01/29/1991 |
| 4981040 | Sight flow indication apparatus with multi-sealing protective arrangements A sight flow indication apparatus with multi-sealing protective arrangements includes: an upper and a lower flange coupling member, each member having a stuffing box formed therein; a first and a second gland member each having a gland pipe portion formed... | 01/01/1991 |
| 4836022 | Bi-color fluviograph of transmission and reflection type This invention relates to a bi-color fluviograph of transmission and reflection type, which increases the intensity of the red and green lights. Colored light sources are used and the principles of transmission and reflection of prism are adopted to trans... | 06/06/1989 |
| 4809862 | Fuseview laminate safety sight glass A safety viewing window for observing the interior of a pressure vessel is the subject of this invention. This viewing window is made up of an optically clear window disc fused to a metal frame. A laminate is overcoated over the fused disc and frame to pr... | 03/07/1989 |
| 4803876 | Sight glass for observing lubricant in the lower gearcase of marine engines Apparatus for providing a sight glass in the lower gearcase of a marine engine wherein the gearcase has a circular opening in its side. The circular opening has three concentric segments, the outermost segment has the largest diameter and is internally th... | 02/14/1989 |
| 4757710 | Sight glass for observing lubricant in the lower gearcase of marine engines A sight glass assembly for observing the lubricant in the lower gearcase of a marine engine. The assembly is designed to be bonded into a circular hole in the lower gearcase housing and includes a window retaining ring which is bonded to the gearcase hous... | 07/19/1988 |
| 4693117 | Replacement element for at liquid level gauge sight tube A shielded tubular gauge for placement between two spaced apart fittings connected to a vessel to show the level of liquid in the vessel, including an elongated frame having a U-shaped cross-sectional configuration, a connection housing secured to each en... | 09/15/1987 |
| 4483193 | Magnetic level indicators Apparatus for the visual indication of the level of liquid contained in boilers, tanks, reservoirs or the like is described, comprising an outer tube connected to the receptacle and having a float which contains a permanent magnetic dipole. Adjacent the t... | 11/20/1984 |
| 4372652 | Laminated gage glass assembly A gage glass assembly can be mounted in a standard pipe joint flange and has a sleeve with an inturned flange at the outer end and an outwardly extending flange at the inner end. A pair of cylindrical lenses inside the sleeve are interspaced by a plastic ... | 02/08/1983 |
| 4211112 | Gaskets for liquid level gages A sight gage for indicating the liquid level in a tank having tubular sight members includes a multipart sealing gland to prevent the gage from deteriorating because of corrosion and deposits appearing thereon.... | 07/08/1980 |
| 4108000 | Gauge glass protector A gauge glass protector includes an annular grommet carried by a frustro-conical skirt and an inverted collector rim at the circumference of the skirt. A drainage hole for condensate is located at the juncture of the collector rim and the conical skirt fo... | 08/22/1978 |
| 4040790 | Moisture and rust detector for hydraulic control systems Steam turbine hydraulic control system utilizing hydraulic fluid more dense than water accumulates any moisture present as vapor over the fluid reservoir. A detector for such moisture vapor which indicates unacceptable moisture admixed with the hydraulic ... | 08/09/1977 |
| 4006486 | Optical viewing, photographic device for vapor generator In an illustrative embodiment of the invention, a steam and water drum of a steam generating system is provided with an optical viewing device, partially inserted through the drum's manway, which permits visual inspection or observation of the drum intern... | 02/01/1977 |
| 3968688 | Liquid level gauge A liquid level gauge having at least one transparent wall and a base wall on the exterior of a vessel. The gauge is secured to and communicates with the interior of the vessel by an eyelet connecting adjacent ports in the gauge and the vessel.... | 07/13/1976 |
