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Class 73/331 - Bull's eye type


Subclass of Class 73 - Measuring and testing
Definition: Gauges wherein the transparent closure means is in the form
No. of patents: 14
Last issue date: 05/08/2007


NumberTitleIssue Date
7213457Solid state illuminator for bi-color ported water level gauges
A solid state illuminator and display 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 devices. The illuminator in...
05/08/2007
7197926Solid 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
7193702Insertion fluid inspection device
A fluid inspection device for inspecting a fluid in a vessel includes an elongate insertion well having a rear end disposed at the wall of the vessel and a front end disposed in the interior of the vessel. An inside of the insertion well is sealed off from the fluid...
03/20/2007
6938481Sight glass and low temperature method of manufacturing the same
An improved lower cost sight glass and a method for producing the same is disclosed, whereby the sight glass is made by placing a transparent component in secure contact with a metallic ring. The contact may optionally be effectuated by temporarily altering the rela...
09/06/2005
6938477Solid 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
6938500Spindle test apparatus and method
An apparatus and method for testing a spindle are provided. The apparatus includes a rotational load device and a linear load device. The rotational load device is connected to the spindle via a shaft and configured to rotationally load the spindle. The linear load ...
09/06/2005
6857315Armored 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
5076198Sight glass structure and method of installing the same
This invention is directed to a novel method of removably securing a sight glass member to a refrigeration vessel in hermetically sealed relation therewith. In accordance with the method concept, a ferrule or like tubular mounting means is fixedly attache...
12/31/1991
4807474Sight glass assembly
A sight glass assembly comprising a housing adapted to be mounted on a wall, the housing having a bore therethrough, the housing bore having an enlarged section providing a shoulder, a lens disposed in the enlarged bore section and seated on the shoulder,...
02/28/1989
4763063Compact digital pressure sensor circuitry
A conditioning circuit for use with a pressure transducer is disclosed which provides a digitally readable electronic output signal indicative of capacitance sensed by the pressure transducer. The circuitry of the present invention utilizes an R-C charge/...
08/09/1988
4620441Liquid level control
A liquid level control responsive to the level of liquid in a vessel having visual verification of fluid level including a tubular body for attachment to an opening in a vessel, the body having aligned openings in opposite sides receiving a pivot shaft, a...
11/04/1986
4441365Sight-glass mounting
A sight-glass mounting consists of a section of pipe having a flange at each end and openings provided on diametrically opposite sides are sealingly covered by glass discs. The openings are arranged off-center with respect to the axis of the section of pi...
04/10/1984
3957359Sight glass assembly
A sight glass assembly adapted to be mounted across an opening in a vessel containing a fluid, generally including a housing having an opening registerable with a vessel opening, means for mounting the housing on such a vessel when the housing opening is ...
05/18/1976
3936196Fluid chamber having manipulatable window elements
An opaque fluid chamber having some means for filling and removing fluid therefrom and at least one aperture therein having a transparent plate sealing it, thereby permitting light to enter or leave the chamber through said aperture without losing fluid m...
02/03/1976
 
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