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Class Information
Number: 169/39
Name: Fire extinguishers > Sprinkler heads > Collapsible strut > Compound
Description: The strut, comprises a plurality of articulated elements whose holding relationship is destroyed on the failure of the strut. The elements of the strut may include levers or other mechanical forms, but the strut as a whole is a compression resisting device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7353882 |
Horizontal sidewall fire protection sprinklers |
Apr. 8, 2008 |
| 7275603 |
Concealed pendent fire protection sprinkler with drop-down deflector |
Oct. 2, 2007 |
| 7165624 |
Early suppression fast response fire protection sprinkler |
Jan. 23, 2007 |
| 6976543 |
Low pressure, extended coverage, upright fire protection sprinkler |
Dec. 20, 2005 |
| 6962208 |
Compact pendant sprinkler head |
Nov. 8, 2005 |
| 6960321 |
Sterilization of fire sprinkler systems |
Nov. 1, 2005 |
| 6868917 |
Low pressure, early suppression fast response sprinklers |
Mar. 22, 2005 |
| 6715561 |
Vacuum dry sprinkler system containing a sprinkler head with expulsion assembly |
Apr. 6, 2004 |
| 6691790 |
Fire-suppression sprinkler system and method for installation and retrofit |
Feb. 17, 2004 |
| 6502643 |
Low pressure, early suppression fast response sprinklers |
Jan. 7, 2003 |
| 6454017 |
Upright fire protection nozzle |
Sep. 24, 2002 |
| 6374919 |
Concealed horizontal sidewall sprinkler arrangement |
Apr. 23, 2002 |
| 6296062 |
Installation for extinguishing fire, spray head |
Oct. 2, 2001 |
| 6152236 |
Combined trigger and concealing device for a sprinkler head |
Nov. 28, 2000 |
| 6123153 |
Fire protection sprinkle and release mechanism |
Sep. 26, 2000 |
| 6059044 |
Fire protection sprinkler and deflector |
May. 9, 2000 |
| 5669449 |
Directional sprinklers |
Sep. 23, 1997 |
| 5664630 |
Extended coverage ceiling sprinklers and systems |
Sep. 9, 1997 |
| 5628367 |
Temperature sensitive sprinkler head with improved spring |
May. 13, 1997 |
| 5613563 |
Locking mechanism for quick response fire sprinkler |
Mar. 25, 1997 |
| 5299645 |
Fire extinguisher sprinkler construction |
Apr. 5, 1994 |
| 5234059 |
Frangible bulb sprinkler head |
Aug. 10, 1993 |
| 5203416 |
Sprinkler head |
Apr. 20, 1993 |
| 5159984 |
Sprinkler head |
Nov. 3, 1992 |
| 5097906 |
Concealed automatic sprinkler |
Mar. 24, 1992 |
| 4976320 |
Concealed sprinkler with drop down deflector assembly, and improved fusible valve lever assembly |
Dec. 11, 1990 |
| 4930578 |
Automatic sprinkler |
Jun. 5, 1990 |
| 4901799 |
Sprinkler head having protuberant ridge valve seat |
Feb. 20, 1990 |
| 4893679 |
Heat-responsive element for fire protection sprinklers or the like |
Jan. 16, 1990 |
| 4880063 |
Adjustable concealed sprinkler |
Nov. 14, 1989 |
| 4800961 |
Sprinkler or fire-extinguishing nozzle |
Jan. 31, 1989 |
| 4785888 |
Decorative quick response sprinkler |
Nov. 22, 1988 |
| 4757865 |
Fast response sprinkler head |
Jul. 19, 1988 |
| 4651832 |
Flash type sprinkler head |
Mar. 24, 1987 |
| 4623023 |
Sprinkler head |
Nov. 18, 1986 |
| 4570720 |
Sprinkler head |
Feb. 18, 1986 |
| 4440234 |
Sprinkler |
Apr. 3, 1984 |
| 4376465 |
Sprinkler head |
Mar. 15, 1983 |
| 4298068 |
Heat sensitive release devices |
Nov. 3, 1981 |
| 4280562 |
Distributor for fire protection sprinkler head |
Jul. 28, 1981 |
| 4279309 |
Sprinkler head with noncircular throat |
Jul. 21, 1981 |
| 4273195 |
Fire protection sprinkler head with air-current diverting fins |
Jun. 16, 1981 |
| 4217959 |
Electrically controlled fluid disperser for a fire extinguishing system |
Aug. 19, 1980 |
| 4176719 |
Heat sensitive release devices |
Dec. 4, 1979 |
| 4176718 |
Anti-lodgement bail for sprinklers |
Dec. 4, 1979 |
| 4136740 |
Large drop sprinkler head for high heat output fires |
Jan. 30, 1979 |
| 4029150 |
Sprinkler |
Jun. 14, 1977 |
| 3971443 |
Discharge head having dual function plug retaining member |
Jul. 27, 1976 |
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