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Class Information
Number: 137/68.17
Name: Fluid handling > Destructible or deformable element controlled > Destructible element > Tensile or sheer pin or bolt > Pressure causes pin or bolt to destruct
Description: Subject matter that destructs when the applied excessive force that fractures the pin or bolt is applied over the surface of the pin or bolt.










Patents under this class:

Patent Number Title Of Patent Date Issued
7798893 Full opening and reclosable explosion vent apparatus Sep. 21, 2010
6488044 Pressure relief apparatus Dec. 3, 2002
5984269 Rotatable valve assembly Nov. 16, 1999
5957197 Downhole cut-off valve used for cementing Sep. 28, 1999
5226448 Freeze safety box organization Jul. 13, 1993
4651827 Hydraulically controlled safety valves for incorporation in production tubes of hydrocarbon production wells Mar. 24, 1987
4601492 Releasable coupling Jul. 22, 1986
4534414 Hydraulic control fluid communication nipple Aug. 13, 1985
4513764 Valve Apr. 30, 1985
4474380 Inflatable packer assembly with control valve Oct. 2, 1984
4452306 Apparatus for detecting ruptures in drill pipe above and below the drill collar Jun. 5, 1984
4361165 Breakaway pipe coupling with automatically closed valves Nov. 30, 1982
4311197 Annulus pressure operated closure valve with improved reverse circulation valve Jan. 19, 1982
4292988 Soft shock pressure plug Oct. 6, 1981
4270610 Annulus pressure operated closure valve with improved power mandrel Jun. 2, 1981
4260164 Inflatable packer assembly with control valve Apr. 7, 1981
4114694 No-shock pressure plug apparatus Sep. 19, 1978
4008760 Circulating valve Feb. 22, 1977











 
 
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