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Class Information
Number: 137/556.3
Name: Fluid handling > With indicator, register, recorder, alarm or inspection means > Position or extent of motion indicator > Indicator element rigidly carried by the movable element whose position is indicated > Movable indicator element is a pointer
Description: Devices wherein the movable indicator element comprises a pointer.










Sub-classes under this class:

Class Number Class Name Patents
137/556.6 Pointer integral with handle 36


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8689826 Valve control hand wheel with position indicator and magnetic couple feature Apr. 8, 2014
8596295 Mechanical position indicator Dec. 3, 2013
8464752 External position indicator of ram blowout preventer Jun. 18, 2013
8465001 Plug valve indicator Jun. 18, 2013
8439069 Air release valve May. 14, 2013
8322298 Valve stem nut wear analysis apparatus and method Dec. 4, 2012
7861741 Hydraulic flow control valve with flow rate setting adjustability Jan. 4, 2011
7798170 Field adjustable control valve assembly and field adjustment module Sep. 21, 2010
7766037 Adjustable shutoff valve Aug. 3, 2010
7681588 Pressure regulator Mar. 23, 2010
7533693 Side-mounted position indicator for flapper check valve May. 19, 2009
7347219 Meter bar and metering system Mar. 25, 2008
7185672 Valve travel indicator Mar. 6, 2007
7069948 Valve travel indicator Jul. 4, 2006
6636155 Gauge having adjustable activating means Oct. 21, 2003
6540206 Bidirectional ball valve particularly for ecological frigorific gases Apr. 1, 2003
6382247 Dry sectional gate relief valve May. 7, 2002
6237626 Remote valve position indicator May. 29, 2001
6213149 In-line diversion valve with flow-through capability Apr. 10, 2001
6182691 Motorcycle petcock cover assembly and method Feb. 6, 2001
6152173 Position indicating check valve Nov. 28, 2000
6142867 Indicating apparatus for a damper opening/closing apparatus of an air diffuser Nov. 7, 2000
6135147 Integrated valve control and monitoring assembly Oct. 24, 2000
6052929 Mnemonic marking system for fluid valves and the like Apr. 25, 2000
6019129 Valve position adjustable lock mechanism Feb. 1, 2000
6009899 Variable orifice dual gate valve Jan. 4, 2000
5921277 Air duct damper Jul. 13, 1999
5890515 Flow control valve with a flow meter Apr. 6, 1999
5826617 Water sink system Oct. 27, 1998
5706856 Valve apparatus Jan. 13, 1998
5538037 Device to indicate operating state of a linear actuation valve Jul. 23, 1996
5487408 Water sink system Jan. 30, 1996
5477879 Control valves Dec. 26, 1995
5456285 Globe valve with a strainer Oct. 10, 1995
5400819 Measuring and regulating valve Mar. 28, 1995
5288052 Self-draining sanitary control valve Feb. 22, 1994
5218994 Arrangement having a pneumatic control valve with a housing closed on all sides Jun. 15, 1993
5178185 Suction inlet valve for fire truck pumpers Jan. 12, 1993
5139048 Direct powered gate valve Aug. 18, 1992
5076308 Indicator for measuring amount of valve opening Dec. 31, 1991
5054516 Automatic flow control valve Oct. 8, 1991
4962787 Fluid flow reversing and regulating ring Oct. 16, 1990
4941504 Manual fluid-control valve with limited closing pressure Jul. 17, 1990
4848398 Ball gate pressure relief valve Jul. 18, 1989
4792116 Sandblasting nozzle and control valve assembly Dec. 20, 1988
4782856 Modulating flow control valve Nov. 8, 1988
4742848 Indexing control for fluid flow regulating valves May. 10, 1988
4671320 Adjustable valve for liquids for equipment having a medical application Jun. 9, 1987
4647003 Remote control actuating device for a valve Mar. 3, 1987
4625746 Automatic fluid sealing mechanism for a conduit with a frangible connector Dec. 2, 1986

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