Deflectors for pendent-type fire protection sprinklers

A pendent-type fire protection sprinkler comprising:

• a body defining an orifice and outlet for flow of fluid from a source,
• a deflector disposed generally coaxial with said outlet and positioned for impingement of the flow of fluid thereupon, said deflector defining an inner surface opposed to water flow from said outlet and an opposite outer surface, and
• a pair of frame arms extending from said body and disposed generally in a first plane including said axis, with said deflector mounted thereupon,
• said deflector comprising a plurality of tines extending about its deflector periphery and defining a plurality of openings therebetween, a pair of opposite tines disposed in a second plane perpendicular to said first plane each defining an irregularity constructed to create a notch-like opening in the upper part of the spray pattern to prevent cold soldering of adjacent sprinklers.

A pendent-type fire protection sprinkler comprising:

• a body defining an orifice and outlet for flow of fluid from a source,
• a deflector disposed generally coaxial with said outlet and positioned for impingement of the flow of fluid thereupon, said deflector defining an inner surface opposed to water flow from said outlet and an opposite outer surface, and
• a pair of frame arms extending from said body and disposed generally in a first plane including said axis, with said deflector mounted thereupon,
• said deflector comprising a plurality of tines extending about its deflector periphery and defining a plurality of openings therebetween, said plurality of openings comprising tapering openings disposed at about 45.degree. to said first plane, said tapering openings having a first base width at an inner region and a second outer width at said deflector periphery, said first width being relatively greater than said second width, and said inner region being relatively closer to said axis than said deflector periphery, the width of each of said tapering openings gradually decreasing with increasing radial distance from said axis out to said deflector periphery.