90 degree dry horizontal sidewall sprinkler

A horizontal dry fire protection sprinkler, comprising:

• a housing having a vertical segment and a horizontal segment extending generally perpendicular to said vertical segment, said vertical segment defining an inlet opening;
• a plug member disposed in said inlet opening for sealingly closing said inlet opening;
• a sprinkler attached to said horizontal segment and including a base having a passage extending there through and defining an outlet opening, a cap disposed in said outlet opening and a heat sensitive trigger engaging said cap;
• and
• a translation mechanism disposed in said housing and engaging said cap and supporting said plug member in said inlet opening, wherein when said heat sensitive trigger releases support of said cap, said translation mechanism is allowed to move within said housing to allow said plug member to dislodge from said inlet opening;
• wherein said housing includes an elbow segment attached to said vertical segment and said horizontal segment.

A horizontal dry fire protection sprinkler, comprising:

• a housing having a vertical segment and a horizontal segment extending generally perpendicular to said vertical segment, said vertical segment defining an inlet opening;
• a plug member disposed in said inlet opening of said vertical segment for sealingly closing said inlet opening;
• a sprinkler attached to said horizontal segment and including a base having a passage extending therethrough and defining an outlet opening, a cap disposed in said outlet opening and a heat sensitive trigger engaging said cap;
• and
• means for supporting said plug member in said outlet opening and releasing said plug member from said inlet opening upon said heat sensitive trigger being released from engaging said cap.