Automatic on-off sprinkler head

Claim 2

An automatic on-off sprinkler head comprising: a housing; a movable partition sealingly engaging said housing for dividing said housing into two chambers, a primary chamber and a control chamber; said housing including an inlet port in said primary chamber adapted for connection with a source of fire quenching fluid, and an outlet port in said primary chamber for dispensing fire quenching fluid; a control valve in said control chamber; a heat responsive device for operating said control valve to turn on the sprinkler head above a predetermined temperature and turn off the sprinkler head below that temperature; a valve element connected with said partition for closing said outlet port; biasing means for producing a force on said partition to urge said valve element to close said outlet port; and a passage interconnecting said primary and control chambers for enabling equalization of pressure therein.

Claim 3

The sprinkler head of claim 1 in which said movable partition includes a base for sealingly, slidingly engaging said housing and a neck for sealingly, slidingly engaging said inlet port and an intermediate member interconnecting said base and said neck.

Claim 4

The sprinkler head of claim 2 in which said base and said neck are generally cylindrical and said intermediate member is generally annular.

Claim 5

The sprinkler head of claim 2 in which said inlet port includes an inlet tube, extending through said control chamber into said primary chamber, for sealingly slidingly engaging said neck.

Claim 6

The sprinkler head of claim 1 in which said passage extends through said partition.

Claim 7

The sprinkler head of claim 1 in which said outlet port includes a valve seat for sealing engagement with said valve element.

Claim 8

The sprinkler head of claim 1 in which said valve element includes a resilient material.

Claim 9

The sprinkler head of claim 1 in which said biasing means includes a spring member located in said control chamber.

Claim 10

The sprinkler head of claim 1 further including a distributor device for distributing the fluid discharged from said outlet port.

Claim 11

The sprinkler head of claim 1 in which said partition includes a diaphragm sealingly engaged with said housing.

Claim 12

The sprinkler head of claim 10 in which said partition further includes a slide member connected with said diaphragm.

Claim 13

The sprinkler head of claim 11 in which said slide member includes an intermediate member for interconnecting said slide member and said diaphragm.

Claim 14

The sprinkler head of claim 11 further including a guide member mounted within said housing for slidingly engaging said slide member.

Claim 15

The sprinkler head of claim 11 in which said passage extends through said partition.

Claim 16

The sprinkler head of claim 11 in which said outlet port includes an elongated outlet tube.

Claim 17

The sprinkler head of claim 11 in which said outlet port includes a valve seat for sealing engagement with said valve element.

Claim 18

The sprinkler head of claim 11 in which said biasing means includes a spring member located in said control chamber.

Claim 19

The sprinkler head oF claim 11 further including a distributor device for distributing the fluid discharged from said outlet port.

Claim 20

An automatic on-off sprinkler head including a housing, a movable partition sealingly engaging said housing for dividing said housing into two chambers; a primary chamber and a control chamber, said housing including an inlet port in said primary chamber adapted for connection with a source of fire quenching fluid, and an outlet port in said primary chamber for dispensing fire quenching fluid, said movable partition including a base for sealingly slidingly engaging said housing and a neck for sealingly slidingly engaging said inlet port, and an intermediate member interconnecting said base and said neck, a control valve in said control chamber, a heat responsive device for operating said control valve to turn on said sprinkler head above a predetermined temperature, and turn off said sprinkler head below that temperature, a valve element connected with said partition for closing said outlet port; biasing means for producing a force on said partition to urge said valve element to close said outlet port, and a passage interconnecting said primary and control chambers for enabling equalization of pressure therein.

Claim 21

An automatic on-off sprinkler head including a housing, a movable partition sealingly engaging said housing for dividing said housing into two chambers; a primary chamber and a control chamber, said housing including an inlet port in said primary chamber adapted for connection with a source of fire quenching fluid, and an outlet port in said primary chamber for dispensing fire quenching fluid, said movable partition including a base for sealingly slidingly engaging said housing and a neck for sealingly slidingly engaging said inlet port, and an intermediate member interconnecting said base and said neck, a control valve in said control chamber, a heat responsive device for operating said control valve to turn on said sprinkler head above a predetermined temperature, and turn off said sprinkler head below that temperature, a valve element connected with said partition for closing said outlet port; biasing means for producing a force on said partition to urge said valve element to close said outlet port, and a passage interconnecting said primary and control chambers for enabling equalization of pressure therein.

Claim 22

An automatic on-off sprinkler head, including a housing, a movable partition sealingly engaging said housing for dividing said housing into two chambers: a primary chamber and a control chamber, said partition including a diaphragm sealingly engaged with said housing and a slide member connected with said diaphragm, said housing including an inlet port in said primary chamber adapted for connection with a source of fire quenching fluid and an outlet port in said primary chamber for dispensing fire quenching fluid and a guide member for slidingly, sealingly engaging said slide member, a control valve in said control chamber, a heat responsive device for operating said control valve to turn on said sprinkler head above a predetermined temperature, and turn off said sprinkler head below that temperature, a valve element connected with said partition for closing said outlet port, biasing means for producing a force on said partition to urge said valve element to close said outlet port, and a passage interconnecting said primary and control chambers for equalization of pressure therein.

Claim 23

An automatic on-off sprinkler head, including a housing, a movable partition sealingly engaging said housing for dividing said housing into two chambers: a primary chamber and a control chamber, said partition including a diaphragm sealingly engaged with said housing and a slide member connected with said diaphragm, said housing including an inlet port in said primary chamber adapted for connection with a source of fire quenching fluid and an outlet port in said primary chamber for dispensing fire quenching fluid and a guide member for slidingly, sealingly engaging said slide member, a control valve in said control chamber, a heat responsive device for operating said control valve to turn on said sprinkler head above a predetermined temperature, and turn off said sprinkler head below that temperature, a valve element connected with said partition for closing said outlet port, biasing means for producing a force on said partition to urge said valve element to close said outlet port, and a passage interconnecting said primary and control chambers for equalization of pressure therein.