US3714989A - Flush type sprinkler - Google Patents

Flush type sprinkler Download PDF

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Publication number
US3714989A
US3714989A US00150474A US3714989DA US3714989A US 3714989 A US3714989 A US 3714989A US 00150474 A US00150474 A US 00150474A US 3714989D A US3714989D A US 3714989DA US 3714989 A US3714989 A US 3714989A
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United States
Prior art keywords
plate
sprinkler
ceiling
heat
strut
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Expired - Lifetime
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US00150474A
Inventor
F Gloeckler
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GRUNAU SPRINKLER MANUFACTURING COMPANY Inc A WIS CORP
Grinnell Corp
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Star Sprinkler Corp of Florida
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Publication of US3714989A publication Critical patent/US3714989A/en
Assigned to CHEMETRON FIRE SYSTEMS, INC., A CORP. OF DE reassignment CHEMETRON FIRE SYSTEMS, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CHEMETRON CORPORATION, A DE CORP.
Assigned to GRUNAU SPRINKLER MANUFACTURING COMPANY, INC., A WIS CORP. reassignment GRUNAU SPRINKLER MANUFACTURING COMPANY, INC., A WIS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CHEMETRON FIRE SYSTEMS, INC.
Anticipated expiration legal-status Critical
Assigned to STAR SPRINKLER CORPORATION reassignment STAR SPRINKLER CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: GRUNAU SPRINKLER MANUFACTURING COMPANY, INC.
Assigned to GRINNELL CORPORATION reassignment GRINNELL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STAR SPRINKLER CORPORATION
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/60—Pipe-line systems wet, i.e. containing extinguishing material even when not in use
    • A62C35/605—Pipe-line systems wet, i.e. containing extinguishing material even when not in use operating and sounding alarm automatically
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • A62C37/09—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers telescopic or adjustable

Definitions

  • a sprinkler is provided mounted flush in a ceiling and has an overlapping outer escutcheon plate releasably held in place by resilient upwardly extending members connected to the escutcheon plate by heat responsive elements.
  • the escutcheon plate is normally secured in covering relation to the sprinkler which has a strut containing a heat responsive element with a different selected heat release temperature. Heat sensing fins in contact with the escutcheon plate are movable downwardly below the ceiling line to an exposed position upon release of the plate and thereby increase the sensitivity of the strut heat responsive element.
  • This invention relates to sprinklers and more particularly to sprinklers that are flush mounted in a ceiling and discharge when predetermined temperatures are attained.
  • a sprinkler having a sprinkler valve disposed above the level of a ceiling, the valve being retained in closed position by a strut and lever, the strut being releasable at a predetermined temperature.
  • the strut is provided with heat sensing fins which are normally held in a horizontal position by an escutcheon plate which covers the valve and its release mechanism.
  • the escutcheon plate is held in place by resilient members that are attached to clips on the escutcheon plate, the clips being held to the plate by an eutetic alloy, and the resilient members are attached to a plate on the sprinkler valve.
  • the heat sensing fins help to transmit heat to the heat responsive element for fast strut release upon their downward movement.
  • the valve has a one piece cross head and deflector plate.
  • FIG. 1 is a vertical sectional view of a sprinkler in accordance with the invention ready for use when required;
  • FIG. 2 is a view partly in vertical section and partly in elevation showing the release of the escutcheon plate and the release of the sprinkler valve;
  • FIG. 3 is a view in perspective of the escutcheon plate and its mounting as seen from the interior thereof.
  • the sprinkler G includes a body 15 in threaded engagement at its upper end 16 in a water supply fitting 17, which is connected to a supply of water under pressure.
  • the body 15 has an internal tapered bore 19 with a seat 20 and rim 21 spaced inwardly from the lower end thereof.
  • the body 15 has a transverse flange 22 with a cylindrical frame 23 in threaded engagement therewith and held against unloosening by a plurality of pins 24 in engagement therewith.
  • a cover 25 is provided held in place by a press fit and carried on the threaded end 16.
  • the flange 22 has a pair of spaced openings '30 therein for the reception of a pair of guide rods 31 which have stop collars 32 at their upper ends to limit the downward movement thereof.
  • the rods 31 are carried at their lower ends in a combined cross head and deflector plate 33.
  • a profiled compression cone 34 is provided in engagement with the cross head 33, and includes a lower end '35.
  • the cone 34 has a spherical upper end 36 which is in bearing engagement with a valve plug 37 and is of a shape selected to obtain a profile that will assist in retaining the valve plug 37 in the body 15.
  • the valve plug 37 has a lower rim 38 which engages the rim 21 and a sealing packing '39 such as an O-ring which engages the seat 20 of the body 15 and prevents fluid leakage thereby.
  • the lower end 35 of the compression cone 34 has an actuator lever 42 in engagement therewith.
  • the lever 42 is supported at one end on a pin 43 carriedin the frame 23 and has its opposite end in engagement with a heat releasable strut 45.
  • the strut 45 has a rod portion 46 with a locating col- 3 lar 47.
  • the end of the rod portion 46 is supported on an inwardly extending rim 48 on the frame 23.
  • the strut 45 at the other end thereof has a cup portion 49 within which an insert 50 is provided of fusible eutectic alloy material, and melting at a predetermined temperature. In a particular embodiment this temperature can be 135 degrees F.
  • the insert 50 normally retains a ball 51 in its outward position and bearing on the rim 48, but upon melting permits the ball 51 to move inwardly in the cup portion 49 from its support position to a release position.
  • the outer surface of the cup portion 49 has secured thereto metallic ribbon like heat sensing fins 52, which are normally held in substantially horizontal position by an escutcheon plate 53 but the free ends of which can swing downwardly when released.
  • the escutcheon plate 53 is of dish shape with a flat central portion 54 and an outer rim 55.
  • the escutcheon plate 53 covers the opening 11 in the ceiling and is held firmly against the ceiling 10 by clips 56 which are engaged by springs 57 which at their upper ends are engaged with a spring plate 58 which has a central opening 59 in engagement with the threaded portion 16 of the body 15.
  • the clip 56 can have integral upwardly extending spacer arms 56a.
  • the clips 56 are secured to the escutcheon plate 53 by a layer of eutectic alloy 60 which, in the particular embodiment illustrated, melts at 117 degrees F.
  • the sprinkler G as shown in FIG. 1 is ready and in condition for operation when required.
  • the pressure effective from above on the strut due to the Water pressure in bore 19 on plug 37 and cone 34 and therefrom onto the ball 51 causes the ball 51 to move inwardly so that the strut 45 is also urged downwardly by force imparted thereto through the actuator lever 42 by cone lower end 35.
  • the strut 4 5 and lever 42 drop and the valve plug 37 is moved outwardly and downwardly by the water pressure thereon.
  • the cross and deflector plate 33 and guide rods 31 drop to the extent permitted by the stop collars '32.
  • a sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling,
  • said body having a fluid supply connection and a discharge bore
  • a cross head member vertically slidably mounted with respect to said body and including a deflector plate for diverting water discharged from said discharge bore
  • cover means comprising a plate disposed on the lower face of the ceiling in covering relation to said frame, a plurality of mounting clips on said plate, and
  • releasable means for holding said cover plate in position and including resilient tension members engaged with said clips and with said frame normally urging said cover plate in an upward direction.
  • a sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling,
  • said body having a fluid supply connection and a discharge bore
  • a cross head member vertically slidably mounted with respect to said body and including a deflector plate for diverting water discharged from said discharge bore
  • valve plug retaining means including a profiled compression cone
  • cover means disposed on the lower face of the ceiling in covering relation to said frame
  • releasable means for holding said cover means in position and including members normally urging said cover in an upward direction.
  • a sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling,
  • said body having a fluid supply connection and a discharge bore
  • a cross head member vertically slidably mounted with respect to said body and providing a deflector plate for diverting water discharged from said discharge bore
  • cover means disposed on the lower face of the ceiling in covering relation to said frame
  • releasable means for holding said cover means in position and including members normally urging said cover in an upward direction.

Abstract

A SPRINKLER IS PROVIDED MOUNTED FLUSH IN A CEILING AND HAS AN OVERLAPPING OUTER ESCUTHCHEON PLATE RELEASABLY HELD IN PLACE BY RESILIENT UPWARDLY EXTENDING MEMBERS CONNECTED TO THE ESCUTHEON PLATE BY HEAT RESPONSIVE ELEMENTS. THE ESCUTCHEON PLATE IS NORMALLY SECURED IN COVERING RELATION TO THE SPRINKLER WHICH HAS A STRUT CONTAINING A HEAT RESPONSIVE ELEMENT WITH A DIFFERENT SELECTED

HEAT RELEASE TEMPERATURE. HEAT SENSING FINS IN CONTACT WITH THE ESCUTCHEON PLATE ARE MOVABLE DOWNWARDLY BELOW THE CEILING LINE TO AN EXPOSED POSITION UPON RELEASE OF THE PLATE AND THEREBY INCREASE THE SENSITIVITY OF THE STRUT HEAT RESPONSIVE ELEMENT.

Description

1973 F. A. GLOECKLER FLUSH TYPE SPRINKLER 2 Sheets-Sheet 1 Filed June 7, 1971 a 2 l M II":' I' w U Ilfi II III NH P P1,. a 2 F 3 i 0 a 7 x Mn 5 Wm 5 x x w I l- FRED A. GLOECKLER A rrmwlf Y 1785- 1973 F. A. GLOECKLER FLUSH TYPE SPRINKLER 2 Sheets-Sheet 2 Filed June '7, 1971 llluzm i I l l -l ///VE/VT0, FRED A. GLOECKLER By J T M A OKWEX United States Patent Ofice 3,714,989. Patented Feb. 6, 1973 US. Cl. 169--19 Claims ABSTRACT OF THE DISCLOSURE A sprinkler is provided mounted flush in a ceiling and has an overlapping outer escutcheon plate releasably held in place by resilient upwardly extending members connected to the escutcheon plate by heat responsive elements. The escutcheon plate is normally secured in covering relation to the sprinkler which has a strut containing a heat responsive element with a different selected heat release temperature. Heat sensing fins in contact with the escutcheon plate are movable downwardly below the ceiling line to an exposed position upon release of the plate and thereby increase the sensitivity of the strut heat responsive element.
BACKGROUND OF THE INVENTION Field of the invention This invention relates to sprinklers and more particularly to sprinklers that are flush mounted in a ceiling and discharge when predetermined temperatures are attained.
CROSS REFERENCE TO RELATED APPLICATION This application is a continuation in part of my prior application Ser. No. 24,596, filed Apr. 1, 1970, now Pat. No. 3,633,676.
Description of the prior art Various types of sprinklers flush mounted in a ceiling have been proposed. One such sprinkler is shown in my pending application Ser. No. 24,596 wherein the escutcheon plate is held by temperature sensitive elements that release it at a predetermined temperature. This structure has been found to be highly satisfactory but does not provide for differences in ceiling thickness and valve and pipe mounting variations. The sprinkler of the invention compensates for variations in ceiling thickness and has a simplified structure.
SUMMARY OF THE INVENTION In accordance with the invention, a sprinkler is provided having a sprinkler valve disposed above the level of a ceiling, the valve being retained in closed position by a strut and lever, the strut being releasable at a predetermined temperature. The strut is provided with heat sensing fins which are normally held in a horizontal position by an escutcheon plate which covers the valve and its release mechanism. The escutcheon plate is held in place by resilient members that are attached to clips on the escutcheon plate, the clips being held to the plate by an eutetic alloy, and the resilient members are attached to a plate on the sprinkler valve. The heat sensing fins help to transmit heat to the heat responsive element for fast strut release upon their downward movement. The valve has a one piece cross head and deflector plate.
It is the principal object of the invention to provide a sprinkler flush mounted at the ceiling and concealed by an escutcheon plate, which plate is held in place by resilient members and heat sensitive elements.
It is a further object of the invention to provide a sprinkler of the character aforesaid in which the escutcheon plate is firmly held to the ceiling.
It is a further object of the invention to provide a sprinkler of the character aforesaid. in which the escutcheon plate effectively screens the sprinkler from view but does not prevent water release when needed.
It is a further object of the invention to provide a sprinkler of the character aforesaid which has a unitary cross head and deflector plate.
Other objects and advantageous features of the invention will be apparent from the description and claims.
BRIEF DESCRIPTION OF THE DRAWINGS The nature and characteristic features of the invention will be more readily understood from the following description taken in connection with the accompanying drawings forming part thereof, in which:
FIG. 1 is a vertical sectional view of a sprinkler in accordance with the invention ready for use when required;
FIG. 2 is a view partly in vertical section and partly in elevation showing the release of the escutcheon plate and the release of the sprinkler valve; and
FIG. 3 is a view in perspective of the escutcheon plate and its mounting as seen from the interior thereof.
It should, of course, be understood that the description and drawings herein are illustrative merely and that various modifications and changes can be made in the structure disclosed without departing from the spirit of the invention.
Like numerals refer to like parts throughout the several views.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now more particularly to the drawings, a portion of a ceiling 10 is illustrated, with an opening 11 therein at which the sprinkler G to be described is mounted, and with a lower exposed face 12.
The sprinkler G includes a body 15 in threaded engagement at its upper end 16 in a water supply fitting 17, which is connected to a supply of water under pressure.
The body 15 has an internal tapered bore 19 with a seat 20 and rim 21 spaced inwardly from the lower end thereof.
The body 15 has a transverse flange 22 with a cylindrical frame 23 in threaded engagement therewith and held against unloosening by a plurality of pins 24 in engagement therewith.
A cover 25 is provided held in place by a press fit and carried on the threaded end 16.
The flange 22 has a pair of spaced openings '30 therein for the reception of a pair of guide rods 31 which have stop collars 32 at their upper ends to limit the downward movement thereof. The rods 31 are carried at their lower ends in a combined cross head and deflector plate 33. A profiled compression cone 34 is provided in engagement with the cross head 33, and includes a lower end '35.
The cone 34 has a spherical upper end 36 which is in bearing engagement with a valve plug 37 and is of a shape selected to obtain a profile that will assist in retaining the valve plug 37 in the body 15.
The valve plug 37 has a lower rim 38 which engages the rim 21 and a sealing packing '39 such as an O-ring which engages the seat 20 of the body 15 and prevents fluid leakage thereby.
The lower end 35 of the compression cone 34 has an actuator lever 42 in engagement therewith.
The lever 42 is supported at one end on a pin 43 carriedin the frame 23 and has its opposite end in engagement with a heat releasable strut 45.
The strut 45 has a rod portion 46 with a locating col- 3 lar 47. The end of the rod portion 46 is supported on an inwardly extending rim 48 on the frame 23.
The strut 45 at the other end thereof has a cup portion 49 within which an insert 50 is provided of fusible eutectic alloy material, and melting at a predetermined temperature. In a particular embodiment this temperature can be 135 degrees F. The insert 50 normally retains a ball 51 in its outward position and bearing on the rim 48, but upon melting permits the ball 51 to move inwardly in the cup portion 49 from its support position to a release position.
The outer surface of the cup portion 49 has secured thereto metallic ribbon like heat sensing fins 52, which are normally held in substantially horizontal position by an escutcheon plate 53 but the free ends of which can swing downwardly when released. The escutcheon plate 53 is of dish shape with a flat central portion 54 and an outer rim 55.
The escutcheon plate 53 covers the opening 11 in the ceiling and is held firmly against the ceiling 10 by clips 56 which are engaged by springs 57 which at their upper ends are engaged with a spring plate 58 which has a central opening 59 in engagement with the threaded portion 16 of the body 15. The clip 56 can have integral upwardly extending spacer arms 56a.
The clips 56 are secured to the escutcheon plate 53 by a layer of eutectic alloy 60 which, in the particular embodiment illustrated, melts at 117 degrees F.
The mode of operation will now be pointed out.
The sprinkler G as shown in FIG. 1 is ready and in condition for operation when required.
If the ambient temperature at the escutcheon plate 53 rises to the set temperature, that is to an extent to melt the eutectic alloy 60, he escutcheon plate 53- will be released from the clips 56 and fall. The free ends of the heat sensing fins 50 will then fall and become effective for heat transfer to the strut 45.
If and when the temperature effective on the insert 50 reaches the set value, i.e., the temperature at which the insert 50 melts, the pressure effective from above on the strut due to the Water pressure in bore 19 on plug 37 and cone 34 and therefrom onto the ball 51, causes the ball 51 to move inwardly so that the strut 45 is also urged downwardly by force imparted thereto through the actuator lever 42 by cone lower end 35.
The strut 4 5 and lever 42 drop and the valve plug 37 is moved outwardly and downwardly by the water pressure thereon. The cross and deflector plate 33 and guide rods 31 drop to the extent permitted by the stop collars '32.
Water discharging through the bore 19 strikes the deflector plate 38 by which it is diverted outwardly in a well known manner.
It will thus be seen that structure has been provided for carrying out the objects of the invention.
I claim:
1. A sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling,
said body having a fluid supply connection and a discharge bore,
a valve plug normally closing said bore,
a cross head member vertically slidably mounted with respect to said body and including a deflector plate for diverting water discharged from said discharge bore,
means engaged with said member for retaining said valve plug in closed position including transversely collapsible first temperature sensitive means carried by said frame,
cover means comprising a plate disposed on the lower face of the ceiling in covering relation to said frame, a plurality of mounting clips on said plate, and
releasable means for holding said cover plate in position and including resilient tension members engaged with said clips and with said frame normally urging said cover plate in an upward direction.
2. A sprinkler as defined in claim 1 in which second temperature sensitive means are provided between said plate and said clips.
3. A sprinkler as defined in claim 1 in which said resilient tension members include a pair of springs resiliently urging said cover means against the coiling face.
4. A sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling,
said body having a fluid supply connection and a discharge bore,
a valve plug normally closing said bore,
a cross head member vertically slidably mounted with respect to said body and including a deflector plate for diverting water discharged from said discharge bore,
means engaged with said member for retaining said valve plug in closed position including transversely collapsible first temperature sensitive means carried by said frame,
said valve plug retaining means including a profiled compression cone,
cover means disposed on the lower face of the ceiling in covering relation to said frame, and
releasable means for holding said cover means in position and including members normally urging said cover in an upward direction.
5. A sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling,
said body having a fluid supply connection and a discharge bore,
a valve plug normally closing said bore,
a cross head member vertically slidably mounted with respect to said body and providing a deflector plate for diverting water discharged from said discharge bore,
means engaged with said member for retaining said valve plug in closed position including transversely collapsible first temperature sensitive means carried by said frame,
cover means disposed on the lower face of the ceiling in covering relation to said frame, and
releasable means for holding said cover means in position and including members normally urging said cover in an upward direction.
References Cited UNITED STATES PATENTS ROBERT S. WARD, In, Primary Examiner U.S. c1. XR. 16939, 42
US00150474A 1971-06-07 1971-06-07 Flush type sprinkler Expired - Lifetime US3714989A (en)

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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812915A (en) * 1973-06-04 1974-05-28 Factory Mutual Res Corp Discharge head having constant force plug retaining member
US3971443A (en) * 1974-08-22 1976-07-27 Factory Mutual Research Corporation Discharge head having dual function plug retaining member
US3998273A (en) * 1976-03-05 1976-12-21 The Reliable Automatic Sprinkler Company, Inc. Apparatus for use with a fire safety device
US4014388A (en) * 1976-06-21 1977-03-29 Central Sprinkler Corporation Concealed sprinkler assembly
US4105076A (en) * 1976-11-22 1978-08-08 Grunau Company Inc. Concealed sprinkler head
DE2703403A1 (en) * 1977-01-27 1978-08-10 Preussag Ag Feuerschutz Ceiling rosette for sprinkler head - has height compensating spring between ceiling hole cover plate and pipe connection cover
US4109727A (en) * 1975-09-06 1978-08-29 Job Eduard J Dual-seal sprinkler system
US4124077A (en) * 1977-05-16 1978-11-07 Thomas J. Masano Sprinkler head with wall penetrating means
US4139062A (en) * 1975-10-27 1979-02-13 Rago John J Telescopic automatic fire extinguisher
US4491182A (en) * 1983-01-05 1985-01-01 Central Sprinkler Corporation Automatic sprinkler
US4508175A (en) * 1982-11-10 1985-04-02 Central Sprinkler Corporation Flush pendant or flush horizontal automatic sprinkler head
US4646846A (en) * 1983-09-27 1987-03-03 Wormald International Ltd. Sprinkler head housing
US4660648A (en) * 1984-06-07 1987-04-28 Senju Metal Industry Co., Ltd. Flush type sprinkler head
US4880063A (en) * 1987-04-13 1989-11-14 The Reliable Automatic Sprinkler Co., Inc. Adjustable concealed sprinkler
US4926946A (en) * 1988-11-08 1990-05-22 Central Sprinkler Corporation Pendent style sprinkler with cover
US4938292A (en) * 1989-02-28 1990-07-03 U.S. Fire Control Corporation Flush mounted fire sprinkler head
US5080176A (en) * 1989-05-25 1992-01-14 Central Sprinkler Corporation Directly mounted pendent-style sprinklers and covers
US5094298A (en) * 1989-12-12 1992-03-10 Central Sprinkler Corporation Fire sprinkler apparatus
WO1993000962A1 (en) * 1991-07-12 1993-01-21 Sundholm Goeran Fire-fighting equipment
US5664630A (en) * 1991-09-30 1997-09-09 Meyer; George G. Extended coverage ceiling sprinklers and systems
WO2002007824A1 (en) * 2000-07-20 2002-01-31 The Reliable Automatic Sprinkler Co., Inc. Large orifice esfr sprinkler arrangement
US6367559B1 (en) * 1998-12-29 2002-04-09 The Viking Corporation Double-blade deflector for side wall sprinkler
US6502643B1 (en) 1997-03-07 2003-01-07 Central Sprinkler Company Low pressure, early suppression fast response sprinklers
US6554077B2 (en) 2001-04-12 2003-04-29 The Reliable Automatic Sprinkler Co., Inc. Quick response adjustable automatic sprinkler arrangements
US20060102362A1 (en) * 2004-10-26 2006-05-18 The Reliable Automatic Sprinkler Co., Inc. Concealed pendent fire protection sprinkler with drop-down deflector
EP1888183A2 (en) * 2005-06-03 2008-02-20 Tyco Fire Products LP Residential flat plate concealed sprinkler
WO2008067421A3 (en) * 2006-11-28 2008-11-20 Tyco Fire Products Lp Concealed sprinkler
US20090056958A1 (en) * 2007-08-30 2009-03-05 Polan George S Concealed pendent fire protection sprinkler with drop-down deflector
US20090139735A1 (en) * 2007-11-30 2009-06-04 The Viking Corporation Adjustable Escutcheon Assembly For A Sprinkler
US20100236797A1 (en) * 2009-03-17 2010-09-23 The Viking Corporation Concealed residential sprinkler
US20110030977A1 (en) * 2004-10-26 2011-02-10 The Reliable Automatic Sprinkler Co., Inc. Concealed horizontal sidewall sprinkler
US20110180277A1 (en) * 2004-10-26 2011-07-28 The Reliable Automatic Sprinkler Co., Inc. Lodgment prevention arrangements for fire sprinklers
US20150136432A1 (en) * 2013-11-19 2015-05-21 Protector Safety Ind., Ltd. Fire sprinkler with improved protective shell
US20150283414A1 (en) * 2013-11-19 2015-10-08 Protector Safety Ind., Ltd. Concealed sprinkler head cover adjusting device
AU2014201946B2 (en) * 2006-11-28 2016-05-12 Tyco Fire Products Lp Concealed sprinkler

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812915A (en) * 1973-06-04 1974-05-28 Factory Mutual Res Corp Discharge head having constant force plug retaining member
US3971443A (en) * 1974-08-22 1976-07-27 Factory Mutual Research Corporation Discharge head having dual function plug retaining member
US4109727A (en) * 1975-09-06 1978-08-29 Job Eduard J Dual-seal sprinkler system
US4139062A (en) * 1975-10-27 1979-02-13 Rago John J Telescopic automatic fire extinguisher
US3998273A (en) * 1976-03-05 1976-12-21 The Reliable Automatic Sprinkler Company, Inc. Apparatus for use with a fire safety device
US4014388A (en) * 1976-06-21 1977-03-29 Central Sprinkler Corporation Concealed sprinkler assembly
US4105076A (en) * 1976-11-22 1978-08-08 Grunau Company Inc. Concealed sprinkler head
DE2703403A1 (en) * 1977-01-27 1978-08-10 Preussag Ag Feuerschutz Ceiling rosette for sprinkler head - has height compensating spring between ceiling hole cover plate and pipe connection cover
US4124077A (en) * 1977-05-16 1978-11-07 Thomas J. Masano Sprinkler head with wall penetrating means
US4508175A (en) * 1982-11-10 1985-04-02 Central Sprinkler Corporation Flush pendant or flush horizontal automatic sprinkler head
US4491182A (en) * 1983-01-05 1985-01-01 Central Sprinkler Corporation Automatic sprinkler
US4646846A (en) * 1983-09-27 1987-03-03 Wormald International Ltd. Sprinkler head housing
US4660648A (en) * 1984-06-07 1987-04-28 Senju Metal Industry Co., Ltd. Flush type sprinkler head
US4880063A (en) * 1987-04-13 1989-11-14 The Reliable Automatic Sprinkler Co., Inc. Adjustable concealed sprinkler
US4926946A (en) * 1988-11-08 1990-05-22 Central Sprinkler Corporation Pendent style sprinkler with cover
US4938292A (en) * 1989-02-28 1990-07-03 U.S. Fire Control Corporation Flush mounted fire sprinkler head
US5080176A (en) * 1989-05-25 1992-01-14 Central Sprinkler Corporation Directly mounted pendent-style sprinklers and covers
US5094298A (en) * 1989-12-12 1992-03-10 Central Sprinkler Corporation Fire sprinkler apparatus
WO1993000962A1 (en) * 1991-07-12 1993-01-21 Sundholm Goeran Fire-fighting equipment
US5501282A (en) * 1991-07-12 1996-03-26 Sundholm; Goeran Fire-fighting equipment
US5664630A (en) * 1991-09-30 1997-09-09 Meyer; George G. Extended coverage ceiling sprinklers and systems
US6502643B1 (en) 1997-03-07 2003-01-07 Central Sprinkler Company Low pressure, early suppression fast response sprinklers
US6868917B2 (en) 1997-03-07 2005-03-22 Central Sprinkler Company Low pressure, early suppression fast response sprinklers
US6367559B1 (en) * 1998-12-29 2002-04-09 The Viking Corporation Double-blade deflector for side wall sprinkler
US6520265B2 (en) 1998-12-29 2003-02-18 The Viking Corporation Double-blade deflector for side wall sprinkler
WO2002007824A1 (en) * 2000-07-20 2002-01-31 The Reliable Automatic Sprinkler Co., Inc. Large orifice esfr sprinkler arrangement
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