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AssigneeStar Sprinkler Corporation
InventorsJohn W. Fenske, John R. Simons, deceased
Estimating the term…
A sprinkler head comprises a tubular body having a first threaded end to be connected to a water line and having a second end that defines an outlet enclosed by a cap. A thermally responsive element, such as a glass bulb or heat fusible element, is engaged with the cap to maintain the cap in a closed position. The body is provided with a pair of generally parallel circumferential grooves. The bottom of one of the grooves adjacent the threaded end has a polygonal cross section to receive a wrench to enable the sprinkler head to be threadedly attached to a water line, while the other of the grooves receives the base portion of a wire-form protective guard that encloses the thermally responsive element.
A fire protection sprinkler head comprising a body having a first end to be connected to a water supply line and having a second end defining an outlet, a closure to enclose said outlet, a thermally responsive member secured by said body and engaged with said closure to maintain said closure in a closed position, said thermally responsive member being releasable when exposed to a preselected elevated temperature, a first zone on said body, a second zone on said body spaced longitudinally from said first zone and disposed between said first zone and the first end of the body, said second zone having a configuration constructed and arranged to receive a tool to connect said body to said water supply line, and said first zone being configured to engage a base portion of a water permeable protective guard for enclosing said thermally responsive member.
A fire protection sprinkler head comprising a body having a first end to be connected to a water supply line and having a second end defining an outlet, a closure to enclose the outlet, a thermally responsive member secured by said body and engaged with said closure to maintain said closure in a closed position, said thermally responsive member being releasable when exposed to a preselected elevated temperature, a first substantially peripherally extending zone on said body, a substantially peripherally extending second zone on said body and disposed longitudinally between said first zone and said first end of said body, said second zone having a configuration constructed and arranged to receive a tool to connect the body to the water supply line, and wherein said first zone is configured to engage a base portion of a water permeable protective guard for enclosing said thermally responsive member, wherein said first and second peripherally extending zones comprise grooves in said body.
A fire protection sprinkler head comprising a body having a first end and a second end, an external thread on said first end of the body and disposed to be connected to a water supply line, said second end defining an outlet, a cap enclosing said outlet, a thermally responsive member secured by said body and engaged with said cap to maintain said cap in a closed position, said thermally responsive member being releasable when exposed to a preselected elevated temperature, said body comprising a first external, peripheral groove, said body also comprising a second external, peripheral groove located longitudinally between said first groove and said thread, said second groove including an inner surface having a polygonal configuration to receive a tool to enable said body to be attached to said water supply line, and wherein said first groove is configured to engage a base portion of a water permeable protective guard for enclosing said thermally responsive member.
In a fire protection sprinkler head including a body having a first end connectable to a water supply line and a second end defining an outlet, a closure to enclose the outlet, a thermally responsive member secured by the body and engaged with the closure to maintain the closure in a closed position, said thermally responsive member being releasable when exposed to a preselected elevated temperature, and a water permeable protective guard, the improvement comprising:
A fire protection sprinkler head comprising:
Dependencies are inferred from the claim text.