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Class Information
Number: 138/94.3
Name: Pipes and tubular conduits > With closures and plugs > Laterally insertable > Line blinds
Description: Closures of the type generally known as "line blinds" which are of platelike form.










Sub-classes under this class:

Class Number Class Name Patents
138/94.5 Pivoted 7


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8651128 Methods and apparatus for isolating a section of fluid line Feb. 18, 2014
8646487 Corrosion coupon holder Feb. 11, 2014
8640736 Apparatus for pressure testing a plumbing system Feb. 4, 2014
8567447 Multipartite mechanical press for flanged connections with wedge-actuated movement mechanism Oct. 29, 2013
8215340 Orifice plate carrier Jul. 10, 2012
8176941 Apparatus for stabilization and deceleration of supersonic flow incorporating a diverging nozzle and perforated plate May. 15, 2012
8025080 Orifice plate alignment device Sep. 27, 2011
7870873 Dual chamber orifice fitting isolation valve Jan. 18, 2011
7841365 Apparatus for controlling flow through a conduit Nov. 30, 2010
7806145 Housing for a flow conditioner Oct. 5, 2010
7731242 Pipe clamp with built in test fitting Jun. 8, 2010
7654287 Dual slide gate valve and method for using same Feb. 2, 2010
7469709 Three-wedge double block isolation chamber Dec. 30, 2008
6871666 Bi-directional dual chamber orifice fitting Mar. 29, 2005
6843483 Seal ring for orifice plate Jan. 18, 2005
6840282 Mechanisms to set a hollow device into and to retrieve said hollow device from a flow pipe Jan. 11, 2005
6655413 Method and apparatus for pressure testing pipe lines Dec. 2, 2003
6116262 Plumbing coupling and method of use Sep. 12, 2000
6085793 Safety blinding device Jul. 11, 2000
5967168 Method of connecting branch pipe Oct. 19, 1999
5660199 Method and valve for hot tapping a line Aug. 26, 1997
5582211 Purging blind Dec. 10, 1996
5533760 Method and device for containing fluids Jul. 9, 1996
5524663 Vacuum tube shut-off for power tools Jun. 11, 1996
5494079 Stop-gate apparatus and methods of use thereof Feb. 27, 1996
5474103 Safety guard for orifice fitting device Dec. 12, 1995
5464036 Orifice fitting with venting passage and injection seal Nov. 7, 1995
5464035 Gate-type, side-ported, line blind valve Nov. 7, 1995
5327938 Adjustable orifice fitting carrier for a pipeline orifice fitting Jul. 12, 1994
5318073 Orifice plate seal Jun. 7, 1994
5303742 Line blind assembly having interchangeable DISC Apr. 19, 1994
5303740 Line blind assembly having disc and spacer ring selectively disposable between ends of tubular members Apr. 19, 1994
5287730 Plumbing leakage test apparatus and method of use Feb. 22, 1994
5232199 Sliding gate line blind Aug. 3, 1993
5201344 Emissions eliminator blind Apr. 13, 1993
5160119 Slide plate adjustable orifice Nov. 3, 1992
5050628 Tank entry procedure and apparatus Sep. 24, 1991
5042572 Mounting assembly for modular heat exchanger units Aug. 27, 1991
4936381 Baffle for tubular header Jun. 26, 1990
4895181 Gate valve Jan. 23, 1990
4877083 Brazed heat exchanger and method of making the same Oct. 31, 1989
4765361 Ported gate valve Aug. 23, 1988
4749168 Damper plate sealing mechanism Jun. 7, 1988
4742990 Gate valve May. 10, 1988
4724863 Flue gas seal Feb. 16, 1988
4712585 Orifice plate holder Dec. 15, 1987
4688597 Gate valve Aug. 25, 1987
4671324 Jack bolt assembly Jun. 9, 1987
4655241 Apparatus for sealing dampers Apr. 7, 1987
4582296 Composite blade for dampers for ducts of large cross sectional areas Apr. 15, 1986

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