Fire extinguishers

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application number	Description	Number of patent applications / Date published
169043000	PROCESSES	388
169054000	SPECIAL APPLICATIONS	198
169005000	FLUID SYSTEMS	197
169051000	MOUNT, CABINET OR GUARD	116
169037000	SPRINKLER HEADS	103
169030000	PORTABLE VESSELS	74
169048000	APPARATUS WHICH ISOLATES FLAMES FROM NON-BURNING AREA	62
169019000	AUTOMATIC VALVES	20
169026000	AUTOMATIC RECEPTACLES	11
169023000	ALARMS	7
169091000	MISCELLANEOUS: E.G., BLOWERS	6
169042000	FUSIBLE CONNECTIONS	2
20100059235	Cover for Protecting a Fusible Linkage in a Sprinkler Head - A combination of a cover and a sprinkler head. The sprinkler head includes a fusible linkage mounted within a frame and having a protruding portion. The cover includes a first member adjacent to the protruding portion of the fusible linkage. The first member has a first connecting end and a first fastening end opposite the first connecting end. A second member is opposite to the first member and has a second connecting end and a second fastening end opposite the second connecting end. The first and second connecting ends are coupled to each other. A first projection and a second projection extend from the first member toward the second member and are in spaced relation to each other for receiving the protruding portion of the fusible linkage.	03-11-2010
20140305663	Self-Aligning Cover Spring For A Concealed Sprinkler - A spring may include an annular plate having a central aperture; a plurality of spring members protruding from the annular plate, the plurality of spring members being resiliently flexible and radially disposed around the central aperture; and a plurality of alignment tabs protruding from the annular plate.	10-16-2014