| Patent Number |
Title Of Patent |
Date Issued |
| RE29155 |
On-off sprinkler |
March 22, 1977 |
| An improved sprinkler for a fire protection sprinkler system in which the sprinkler opens to discharge water at one temperature and closes to stop the flow of water at a lower temperature. A pilot valve is actuated by a bimetal disc which also resiliently biases the pilot valve in a clos |
| 4585069 |
Liquid discharge nozzle |
April 29, 1986 |
| A liquid discharge nozzle that is operative for discharging liquid in a relatively narrow, elongated spray pattern. The nozzle includes a deflector having an elongated central apex portion of preferably arcuate configuration and a pair of side portions diverging from opposite side ed |
| 4570719 |
Dry pipe valve accelerator |
February 18, 1986 |
| A dry pipe valve accelerator is operative for quickening the operation of a dry pipe valve in a dry sprinkler system in order to hasten the delivery of water throughout the system in response to the operation of one or more sprinkler heads of the system. The accelerator is automatically |
| 4408788 |
Hingeable split pipe collar |
October 11, 1983 |
| A split collar for use with pipe and the like including a pair of discrete semicircular collar halves each having outwardly extending flanges at their terminal ends, and which halves cooperate to define an essentially circular opening. The inner surfaces of adjacent flanges abut along th |
| 4405018 |
Deflector with surface for circumferentially redistributing fluid for improved spray uniformity |
September 20, 1983 |
| The invention features improved fluid deflection techniques for a pendent-type fire-protection sprinkler head. A first deflecting surface facing generally upward is positioned in the path of fluid emerging from the body of the sprinkler and includes a portion spaced to circumferentia |
| 4296816 |
Horizontal sprinkler deflector with flow lifting formation |
October 27, 1981 |
| A fire-protection sprinkler head with a deflector having a spray confining surface that includes a deformed area with relatively greater inclination than surrounding undeformed areas so as to selectively lift the flow entering the deformed area and thereby raise its trajectory relative t |
| 4296815 |
Deflector with converging lower tines for horizontal sprinkler |
October 27, 1981 |
| A horizontal-sidewall, fire-protection sprinkler head including a spray deflector with a downwardly-extending slot that is substantially narrower in width at a first, outer location than at a second, inner location, wherein the slot has the effect of raising the trajectory of fluid passi |
| 4279309 |
Sprinkler head with noncircular throat |
July 21, 1981 |
| A fire-protection sprinkler head having a base from which fire-retardant fluid emerges in a stream, a deflector plate spaced from the base for deflecting the stream into a spray pattern, and a throat in the base with a noncircular cross section selected to vary the shape of the stream an |
| 4273195 |
Fire protection sprinkler head with air-current diverting fins |
June 16, 1981 |
| A fire-protection sprinkler head with an improved response characteristic achieved by providing a fusible link with a fin having multiple face portions oriented to direct air currents from any of a plurality of orthogonal directions over the fusible region of the link. An embodiment |
| 4215751 |
Finish plate assembly for a sprinkler head having interengaging ramp and arm elements |
August 5, 1980 |
| A finish plate assembly for giving a finished appearance to a fire-protection sprinkler head exposed through an opening in a ceiling wherein the installed height and angular orientation of the ceiling with respect to the sprinkler head is variable, thereby determining a range of vari |
| 4128128 |
Diaphragm actuated sprinkler head |
December 5, 1978 |
| A pilot operated sprinkler head comprises a two part housing having an annular diaphragm extending across a chamber between the housing parts, the diaphragm being sealed to a hollow bore main valve member and sealed to the chamber; one side of the diaphragm is exposed to the discharge of |
