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Class Information
Number: 137/384
Name: Fluid handling > With lock or seal > With seal
Description: Apparatus which uses a seal as a means for preventing and/or indicating unauthorized use or adjustment.










Patents under this class:

Patent Number Title Of Patent Date Issued
8528587 Two plate manifold with crossovers Sep. 10, 2013
7721755 Valve for controlling the flow of fluids May. 25, 2010
7588050 Security cap for gas service valve Sep. 15, 2009
7007712 Pneumatic tool lock Mar. 7, 2006
6918402 Flow control apparatus Jul. 19, 2005
6863083 Vacuum demand flow valve Mar. 8, 2005
6422029 Method of, and kit for, protecting the integrity of refrigeration systems Jul. 23, 2002
6164318 Valve locking system Dec. 26, 2000
6053005 Method of and kit for protecting the integrity of refrigeration systems Apr. 25, 2000
6003714 Compressed gas cylinder safety cap and valve seal retainer Dec. 21, 1999
5817083 Mixing device and clamps useful therein Oct. 6, 1998
5533891 Locking mechanism for hand torch regulators Jul. 9, 1996
5241982 Tamper-evident cap for securing refrigerant service ports Sep. 7, 1993
5203477 Closure unit for kegs Apr. 20, 1993
4935041 Photolysis apparatus and collection trap module Jun. 19, 1990
4889160 Antitamper vent arrangement for a receptacle or enclosure Dec. 26, 1989
4860786 Shut off for a gas line Aug. 29, 1989
4818469 Seal for turning valve bodies, in particular for valves in nuclear-engineering plants Apr. 4, 1989
4705064 Safety seal for an operating lever Nov. 10, 1987
4684492 Repair fixture Aug. 4, 1987
4503880 Fluid distribution lockout apparatus Mar. 12, 1985
RE31027 Locking hood assembly for flow control device Sep. 14, 1982
4331616 Adjusting screw of a carburetor May. 25, 1982
4317784 Adjust screw device for carburetor Mar. 2, 1982
4308220 Tamperproof protecting construction Dec. 29, 1981
4292994 Raw milk transfer systems Oct. 6, 1981
4246929 Tamper proof idle adjusting screws Jan. 27, 1981
4239710 Device for checking random adjustment of adjustable parts of carburetor Dec. 16, 1980
4234523 Adjustment prevention mechanism for carburetor Nov. 18, 1980
4234524 Idle adjusting screw in carburetor Nov. 18, 1980
4120918 Tamper proof idle adjusting screws Oct. 17, 1978
4024740 Locking hood assembly for flow control device May. 24, 1977
3980099 Valve guard Sep. 14, 1976











 
 
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