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Class Information
Number: 285/93
Name: Pipe joints or couplings > With indicator, alarm or inspection means
Description: Devices combined with (1) an indicator or alarm responsive to a condition or position of a part of the coupling or (2) with means which permits inspection of hidden parts or of the material inside the coupling.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
5893590 Quick connector housing with elongated barb design to prevent accidental engagement Apr. 13, 1999
5884943 Sleeve of a gardening tool, particularly coupling sleeve of a quick hose coupling Mar. 23, 1999
5882049 High pressure quick connect with reduced volumetric displacement and piloted snap ring Mar. 16, 1999
5879030 Flow line coupling Mar. 9, 1999
5876069 Connection construction for tubular members Mar. 2, 1999
5868435 Apparatus for and method of attaching conduits to a fitting Feb. 9, 1999
5863077 Quick connector with snap-on frangible retainer Jan. 26, 1999
5855397 High-pressure sealable connector for a pressure sensor Jan. 5, 1999
5855398 Method and assembly for connecting a fuel or fluid line Jan. 5, 1999
5829880 Temperature sensor housing Nov. 3, 1998
5829792 Tube coupling with an indicator device employed for visual inspection of the proper locking/sealing position Nov. 3, 1998
5831149 Pipe coupling assembly, system and method Nov. 3, 1998
5823579 Device for coupling a flared metal pipe Oct. 20, 1998
5819326 Connecting apparatus for a toilet and a drainpipe Oct. 13, 1998
5799987 Fluid fitting coupling system Sep. 1, 1998
5794984 Quick connector Aug. 18, 1998
5794985 Threaded pipe connection Aug. 18, 1998
5788288 Sealing arrangement Aug. 4, 1998
5785358 Connection verifier for a quick connector coupling Jul. 28, 1998
5779278 Pop off insertion indicator for metal quick connectors Jul. 14, 1998
5779279 Connection verification and secondary latch device Jul. 14, 1998
5765877 Pipe joint Jun. 16, 1998
5749607 Joint assembly employing multi-ring gasket May. 12, 1998
5730472 Flangeless pipe joint and a process for manufacturing such a joint Mar. 24, 1998
5720501 Swivel joint elbow orientation device Feb. 24, 1998
5711549 High pressure quick connect for use in automotive brake system application Jan. 27, 1998
5711370 Inlet and outlet union mechanisms of a heat exchanger Jan. 27, 1998
5707086 Tubing connectors and parts for receiving the connectors Jan. 13, 1998
5704656 Adjustable pipe entrance seal Jan. 6, 1998
5697652 Pipe joint assembly Dec. 16, 1997
5685571 Pipe socket Nov. 11, 1997
5681064 Gasket retainer Oct. 28, 1997
5676403 Pop top insertion indicator for quick connectors Oct. 14, 1997
5662359 Quick connect coupling with lock ring and indicator Sep. 2, 1997
5660417 Indicator for maintaining seals in flange assemblies Aug. 26, 1997
5649724 Secondary latch and indicator for fluid coupling Jul. 22, 1997
5641184 Tube, especially for medical use, method of producing said tube, and tool for use in the implementation of the method Jun. 24, 1997
5623890 Safe exit indicating firehose coupling Apr. 29, 1997
5620210 Fluid conduit coupling Apr. 15, 1997
5616841 Flow metering device for landfill gas extraction well Apr. 1, 1997
5609369 Clamp apparatus with opening for a probe Mar. 11, 1997
5607190 Quick and leaktight joining device for tubular pipes Mar. 4, 1997
5605360 Connecting structure for pressure detector Feb. 25, 1997
5590914 Field assembled gas riser Jan. 7, 1997
5588954 Connector for a gradient sequential compression system Dec. 31, 1996
5580103 Coupling device Dec. 3, 1996
5577775 Bearingless coolant union Nov. 26, 1996
5573280 Tubing end-piece and connector Nov. 12, 1996
5573283 Branched hose construction, part therefor and methods of making the same Nov. 12, 1996
5566983 Fluid interface Oct. 22, 1996

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