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Class Information
Number: 429/53
Name: Chemistry: electrical current producing apparatus, product, and process > Means externally releasing internal gas pressure from closed cell, i.e., valve etc.
Description: Apparatus having means to release an internal gas pressure to the exterior of a closed cell.


Sub-classes under this class:

Class Number Class Name Patents
429/56 Blowout type 189
429/54 Elastic, resilient or spring biasing valve means 143


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7597992 Film covered electrical device, frame member, and housing system for film covered electrical device Oct. 6, 2009
7572544 Sealed rechargeable battery Aug. 11, 2009
7527891 Seal for an electrochemical cell May. 5, 2009
7521148 Cap assembly and secondary battery utilizing the same Apr. 21, 2009
7501197 Cap assembly and secondary battery with same Mar. 10, 2009
7432010 Battery Oct. 7, 2008
7378179 Battery accommodation casing, battery module and assembled battery May. 27, 2008
7378180 Air electrode batteries May. 27, 2008
7332244 Battery module Feb. 19, 2008
7326489 Catalyst design for VRLA batteries Feb. 5, 2008
7294433 Closed alkaline storage battery Nov. 13, 2007
7276092 Electrochemical element in the form of a button cell, and a method for producing an electrochemical element Oct. 2, 2007
7252903 Battery pack Aug. 7, 2007
7244528 Aluminum negative electrode battery Jul. 17, 2007
7175936 Lithium secondary battery and assembled structure of lithium secondary batteries Feb. 13, 2007
7147962 Lithium secondary battery and manufacturing method thereof Dec. 12, 2006
7128437 Temperature activated pressure relief mechanism for flashlights and batteries Oct. 31, 2006
7122276 Pouch type secondary battery with safety vent Oct. 17, 2006
7101640 Screw-in vent plug for lead-acid batteries Sep. 5, 2006
7074255 Noble metal gas barriers Jul. 11, 2006
7060386 Nonaqueous electrolyte solution secondary battery Jun. 13, 2006
6975096 Method and apparatus for regulating charging of electrochemical cells Dec. 13, 2005
6964690 Safety mechanism for rectangular battery and method of manufacturing the same Nov. 15, 2005
6953637 Catalytic hydrogen vent filter for batteries Oct. 11, 2005
6949310 Leak proof pressure relief valve for secondary batteries Sep. 27, 2005
6936373 Monobloc battery having a number of interconnected electrochemical cells Aug. 30, 2005
6926992 Nonaqueous electrolyte secondary battery Aug. 9, 2005
6908500 System and method for controlling gas transport in a fuel cell Jun. 21, 2005
6893771 Battery assembly May. 17, 2005
6887614 End cap assembly for an electrochemical cell May. 3, 2005
6878486 Seal for electrochemical cell Apr. 12, 2005
6878485 Mechanical and thermal improvements in metal hydride batteries, battery modules and battery packs Apr. 12, 2005
6866961 Lithium secondary battery and manufacturing method thereof Mar. 15, 2005
6861174 Electrochemical cell with low volume cover assembly Mar. 1, 2005
6846591 Battery casing Jan. 25, 2005
6844104 Vent plug system for storage batteries Jan. 18, 2005
6830736 Apparatus for carrying out a heterogeneously catalyzed reaction Dec. 14, 2004
6818342 Method of forming protective coating on cell safety valve element, cell safety valve element coated with protective film, cell sealing plate using the element, and enclosed cell using the plat Nov. 16, 2004
6805991 Nonaqueous electrolyte solution secondary battery Oct. 19, 2004
6777128 Secondary battery and fabrication method thereof Aug. 17, 2004
6743544 Electric energy storage device Jun. 1, 2004
6737188 Seal for an electrochemical cell May. 18, 2004
6730430 Explosion-proof safety structure for column shape lithium battery May. 4, 2004
6713208 Vent valve and a storage cell including it Mar. 30, 2004
6703157 Cylindrical battery and method for manufacturing the same Mar. 9, 2004
6682846 Charging element device and holding structure therefor Jan. 27, 2004
6660425 Catalyst design for VRLA batteries Dec. 9, 2003
6653018 Electrochemical device Nov. 25, 2003
6645661 Seal and bleed valve unit for electric batteries Nov. 11, 2003
6641949 Battery vent and method of assembly Nov. 4, 2003

1 2 3 4 5


 
 
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