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| Number | Title | Issue Date |
| 7258006 | Sight gauge shield and method A one-piece molded polymeric sight gauge shield with internal cylindrical bore and method for making same are disclosed, along with a liquid-containing urn including same. The shield is molded by mating first and second mold portions about first and second spaced-ap... | 08/21/2007 |
| 7131671 | Transparent coupling A transparent coupling for joining the ends of relatively soft plastic conduit. Visual inspection through the coupling affords confidence that the conduits have been installed in their proper position within the coupling. Internal circumferential barbs of the coupli... | 11/07/2006 |
| 7079334 | Infrared sight glass for aftermarket fitment An infrared sight glass for aftermarket fitment around an opening of an enclosure which enables thermal inspection of electrical equipment within the enclosure. The mounting of the sight glass is performed externally which avoids having to access the interior of the... | 07/18/2006 |
| 6920970 | High performance clutch pack for transmission A high performance clutch pack assembly for use in the high gear clutch of a Powerglide transmission is disclosed. The present clutch assembly is disposed in a modified clutch drum having weight reduction features for receiving a modified clutch pack comprising up t... | 07/26/2005 |
| 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 |
| 6698284 | Liquid level gauge A gauge includes a translucent tube assembly having metallic tubular end segments. The end segments are endwise embedded within the ends of the translucent tube and permit dispensing with packing when joined to shut off valves at the ends of the tube asse... | 03/02/2004 |
| 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 |
| 6554610 | Methods for constructing a combustion chamber access door and associated apparatus An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with ... | 04/29/2003 |
| 6547558 | Methods of making a fuel-fired heating appliance An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with ... | 04/15/2003 |
| 6355911 | Method of securing articles and an electric kettle made by such a method There is disclosed a method of securing a stainless steel housing (12) for a kettle (10), a polypropylene or polycarbonate water gauge (14), and a polypropylele or polycarbonate backing element (16A, 16B, 16C, 16D, 16E), including the steps of (a) welding... | 03/12/2002 |
| 6282952 | Shield for a sight gauge A sight gauge assembly for an urn sight gauge includes an elongated extruded sight gauge shield. The shield has a longitudinal axis and a generally U-shaped cross section defining the shield to have a sight gauge receiving recess extending along its entir... | 09/04/2001 |
| 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 |
| 5383360 | Column-type level indicator for tanks and the like, comprising means for its outward application A column-type level indicator, to be applied on the wall of tanks or containers for liquids in order to measure their level and/or temperature, of the type in which the fixing screws (4, 5), suitably provided with axial and transversal holes, also act as ... | 01/24/1995 |
| 5323654 | Shielded sight glass A sight glass placed between two spaced apart confronting fittings and connected to a vessel to show the level of liquid in the vessel is shielded by a novel transparent plastic enclosure. The enclosure is in the form of a polygon and is made from a sheet... | 06/28/1994 |
| 5323653 | Fluid level detection apparatus A fluid level detection apparatus including a support member; first and second end blocks which are slidably engageable with the support member and which each have a passageway; a seal borne by each of the end blocks and disposed in each of the passageway... | 06/28/1994 |
| 4888990 | Sight glass apparatus A sight glass apparatus and method limiting external pressures on the sight glass. The sight glass apparatus has a pair of flanges wherein each of the flanges includes a tubular top portion which abuts the respective pipes. The tubular top portion include... | 12/26/1989 |
| 4807473 | Thermoplastic sight monitor A liquid sight monitor includes a translucent thermoplastic viewing tubular element having ends that are flared, after the tube is inserted through the central holes of flanges located at either end, to secure the viewing element in place. A float may be ... | 02/28/1989 |
| 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 |
| 4345468 | Liquid sight monitor A liquid sight monitor including an internal sight tube surrounded by an external sight tube, the ends therebetween being spaced apart by inserts including "O" rings sealing against both tubes. The internal annulus between the tubes can be environmentally... | 08/24/1982 |
| 4107999 | Automatic oil level maintaining system A system for maintaining a desired level of fluid in a sump, such as maintaining a desired level of oil in the crankcase of an internal combustion engine, is provided with an oil reservoir having a cap which assures sealing of the fluid inlet of the reser... | 08/22/1978 |
| 4050305 | Shield and bracket assembly for flowmeter A protective shield and bracket assembly adapted to cooperate with a flowmeter in which a variable-area flow tube subject to breakage in the course of operation is supported in an upright position within a meter body having a rear wall in a manner exposin... | 09/27/1977 |
