| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073323000 | Sight glass | 16 |
| 20090013781 | Method and device to measure the level of pressurized liquid in a siphon container - A method and device which provides visual means to confirm the level of liquid in an opaque container, by operating an adjacent transparent gauge tube which is in correspondence with the liquid on the inside of container, notwithstanding the pressurized condition of the liquid, while maintaining the pressure above the liquid in the gauge tube at the same level as the pressure above the liquid in the container. | 01-15-2009 |
| 20090056438 | Gage Cock Ball Valve - An apparatus for measuring the level of fluid in a vessel including a sight glass for showing the level of the fluid and a valve which includes a ball valve passageway having a ball check valve, a bypass passageway for bypassing the ball check valve and a rotatable passageway for selecting the ball valve passageway or the bypass passageway. | 03-05-2009 |
| 20090178479 | TILT-INVARIANT FLUID VOLUME MEASUREMENT - Apparatus ( | 07-16-2009 |
| 20090241661 | Level indicator or pressure-measuring device with a cup-shaped housing cover - Level indicator or pressure-measuring device with a cup-shaped housing cover ( | 10-01-2009 |
| 20100011854 | SAND LEVEL MONITORING SYSTEM - A system for monitoring a sand reservoir includes: (a) a sand reservoir carried on an off-highway vehicle; and (b) at least one sand level indicator carried by the sand reservoir which provides a visual display external to the sand reservoir indicative of the quantity of sand within the sand reservoir. | 01-21-2010 |
| 20100031744 | Thermal Liquid Container Having Liquid Level Indicator - A container for holding liquids. The container has a body having an interior for holding a liquid, an exterior surface, and an upper portion defining a central opening and a spout. A handle is attached to the body at a first predetermined location. A liquid level indicator is attached to the body at a second predetermined location that is a predetermined distance from the first predetermined location. The liquid level indicator has a liquid passageway therethrough which is in fluid communication with the interior of the body. The liquid level indicator has a first end attached to the body, a second end attached to the body, and a substantially transparent portion between the first and second ends. The substantially transparent portion is spaced apart from the exterior surface of the body by a predetermined distance. In one embodiment, the body has a generally circular shape and the liquid level indicator is about 90° from the handle. | 02-11-2010 |
| 20100313655 | SIGHT GLASS WITH A FLOW DIRECTING ASSEMBLY - A sight glass with a flow directing assembly is used to detect the presence of entrained liquids in natural gas during spot sampling procedures. The flow directing assembly directs at least a portion of the gas flow to impinge upon a first transparent window and swirl around in a chamber of the sight glass which may cause droplets of liquid to form on the inside of the window and may cause a fog to form inside the chamber, all of which make it easier to see the existence of liquids in the natural gas. At least one embodiment of this sight glass also acts as a fluid separator, collecting the liquids in the chamber which may then be periodically drained. | 12-16-2010 |
| 20110283788 | Boat Steering Fluid Sight Gauge - A marine steering fluid system sight gauge comprises a hollow body having an annular first end, a second end, and a substantially transparent intermediate portion. The annular first end is externally threaded and screws into and sealingly engages against a threaded aperture of a marine steering fluid system. The second end is internally threaded and sealingly receives the threaded cylindrical plug of a marine steering fluid system cap. The hydraulic fluid level is periodically inspected by viewing the level of fluid in the transparent intermediate portion of the sight gauge. | 11-24-2011 |
| 20150114109 | ADJUSTABLE 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 and resists leakage due to environmental, chemical, thermal or mechanical expansion cycles by using internal grooves and entrapped o-rings. The improved fluid level verification apparatus having at least one adjustable end to provide adjustable spacing between the fluid level verification apparatus inlet and outlet. | 04-30-2015 |
| 20160146655 | MONITORING DEVICE FOR GASEOUS FUEL - Provided is a monitoring device ( | 05-26-2016 |
| 073325000 | With guard or casing | 3 |
| 20090114012 | Filling level indicator having an explosion-proof housing - Filling level indicator having an explosion-proof housing comprising a glass and a metallic frame, wherein the glass is fused into the frame. | 05-07-2009 |
| 20100313656 | SIGHT GLASS WITH LIQUID SEPARATOR - A liquid separator with at least one flow passageway is used to detect and remove the presence of entrained liquids from natural gas during spot sampling procedures prior to analysis of the sample by a gas chromatograph. In one embodiment, the at least one flow passageway directs at least a portion of the gas flow to impinge upon the inside surface of a sight glass and swirl around in a chamber which may cause droplets of liquid to coalesce on the inside of the sight glass and may cause a fog to form inside the chamber, all of which make it easier to see the existence of liquids in the natural gas. The at least one flow passageway is less expensive to fabricate that some prior art flow directing elements. | 12-16-2010 |
| 073326000 | Boiler type | 1 |
| 20160377472 | 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 and resists leakage due to environmental, chemical, thermal, or mechanical, expansion cycles using internal grooves and entrapped o-rings sheathed into multi-faced end blocks in a symmetrical configuration. | 12-29-2016 |
| 073327000 | Reflector or magnifier | 1 |
| 20130167631 | Compact Reflective Level Indicator with Glass Element - Reflective level indicator comprising a central support piece ( | 07-04-2013 |
| 073334000 | Transparent closure plate type | 2 |
| 20120285241 | Particulate Material Monitoring System - A particulate material monitoring system for efficiently monitoring the level of particulate material within a container. The particulate material monitoring system generally includes a flange defining a front opening, a viewing cover attached to the flange covering the front opening, a viewing wall connected to the flange and a rear opening extending through the viewing wall. | 11-15-2012 |
| 20140311240 | Condition Monitoring Pod - Apparatuses are disclosed including an apparatus for machine fluid monitoring or sampling comprising a transparent sight glass attachable to a machine such that machine fluid is transferable to the sight glass. The sight glass may have one or more ports, an open first end, a closed second end, and a cavity for the machine fluid. A grommet may be positioned in a first port of the sight glass and may have a sealable access pathway through the grommet to the cavity within the sight glass through which a probe may be extended. A magnetic plug may be positioned in the second port of the sight glass extending into the cavity within the sight glass such that the magnetic plug is positionable for contact with the machine fluid. A sample port assembly may be connected to the sight glass whereby samples of the machine fluid are accessible. | 10-23-2014 |
