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Class Information
Number: 169/38
Name: Fire extinguishers > Sprinkler heads > Collapsible strut
Description: The valve is supported by means of a strut or compression device arranged between the valve and a part of the frame, the strut being designed to fall or collapse upon an increase of its temperature. This includes struts consisting of a single or simple element which falls by fusion, combustion, or bursting.


Sub-classes under this class:

Class Number Class Name Patents
169/39 Compound 48


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7353882 Horizontal sidewall fire protection sprinklers Apr. 8, 2008
7314094 Concealed cover for a fire sprinkler head Jan. 1, 2008
7290618 Fast response sprinkler head and fire extinguishing system Nov. 6, 2007
7275603 Concealed pendent fire protection sprinkler with drop-down deflector Oct. 2, 2007
7222678 Sprinkler head May. 29, 2007
7143834 Sprinkler assembly Dec. 5, 2006
7096964 Sprinklers Aug. 29, 2006
7036603 Fast response sprinkler head and fire extinguishing system May. 2, 2006
7017673 Sprinkling head for fire fighting systems Mar. 28, 2006
6976543 Low pressure, extended coverage, upright fire protection sprinkler Dec. 20, 2005
6976544 Sprinkler Dec. 20, 2005
6962208 Compact pendant sprinkler head Nov. 8, 2005
6960321 Sterilization of fire sprinkler systems Nov. 1, 2005
6923265 Submerged thermally sensitive element for an automatic fire sprinkler Aug. 2, 2005
6868917 Low pressure, early suppression fast response sprinklers Mar. 22, 2005
6851482 Sprinkler assembly Feb. 8, 2005
6840329 Cover assembly for a concealed sprinkler head Jan. 11, 2005
6715561 Vacuum dry sprinkler system containing a sprinkler head with expulsion assembly Apr. 6, 2004
6669111 Protector for thermally responsive member of sprinkler head Dec. 30, 2003
6585054 Fast response sprinkler head and fire extinguishing system Jul. 1, 2003
6502643 Low pressure, early suppression fast response sprinklers Jan. 7, 2003
6454017 Upright fire protection nozzle Sep. 24, 2002
6439315 Automatic sprinkler head Aug. 27, 2002
6374919 Concealed horizontal sidewall sprinkler arrangement Apr. 23, 2002
6347669 Sprinkler Feb. 19, 2002
6345670 Spray head Feb. 12, 2002
6336509 Low pressure fast response bulb sprinklers Jan. 8, 2002
6296062 Installation for extinguishing fire, spray head Oct. 2, 2001
6230815 Sprinkler or spray head May. 15, 2001
6152236 Combined trigger and concealing device for a sprinkler head Nov. 28, 2000
6123153 Fire protection sprinkle and release mechanism Sep. 26, 2000
5967240 Dry sprinkler arrangements Oct. 19, 1999
5967239 Fire-extinguishing device with a fire-extinguishing fluid Oct. 19, 1999
5967238 Thermally responsive frangible bulb Oct. 19, 1999
5967237 Sprinkler Oct. 19, 1999
5890543 Sprinkler actuator Apr. 6, 1999
5865256 Deflectors for pendent-type fire protection sprinklers Feb. 2, 1999
5826665 Sprinkler head with stamped trigger-mounting elements Oct. 27, 1998
5810263 Deflector for horizontal-type fire sprinklers Sep. 22, 1998
5775431 Dry sprinkler arrangements Jul. 7, 1998
5732778 Sprinkler head Mar. 31, 1998
5669449 Directional sprinklers Sep. 23, 1997
5667017 Atomizer for generating water-mists in fire-fighting systems Sep. 16, 1997
5664630 Extended coverage ceiling sprinklers and systems Sep. 9, 1997
5628367 Temperature sensitive sprinkler head with improved spring May. 13, 1997
5622225 Quick response sprinkler head Apr. 22, 1997
5617922 Installation for fighting fire with first or first and second, door adjacent spray heads Apr. 8, 1997
5573065 Spray head provided with a pressure sensitive valve Nov. 12, 1996
5533576 Automatic on-off fire protection sprinkler Jul. 9, 1996
5531275 Installation for fighting fire Jul. 2, 1996

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