US3791581A - Pop-up sprinkler - Google Patents
Pop-up sprinkler Download PDFInfo
- Publication number
- US3791581A US3791581A US00284215A US3791581DA US3791581A US 3791581 A US3791581 A US 3791581A US 00284215 A US00284215 A US 00284215A US 3791581D A US3791581D A US 3791581DA US 3791581 A US3791581 A US 3791581A
- Authority
- US
- United States
- Prior art keywords
- stem
- sprinkler
- chamber
- bushing
- pop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/70—Arrangements for moving spray heads automatically to or from the working position
- B05B15/72—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means
- B05B15/74—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means driven by the discharged fluid
Definitions
- UNITED STATES PATENTS stem is provided with stabilizer means vertically slid- 3,063,645 1 1/1962 Tropeano et al. 239/206 able with said stem, located in the upper chamber, and 3,315,898 4/1967 Costa 239/206 shaped to cooperate with walls of that chamber to sta- 2.50l,9 9 g j 239/204 bilize the stem, and prevent wobble, significant tilting 2,812,977 11/1957 Ph11l1ps 239/204 or lateral movement of the stem, in n vertical posi 3,086,714 4/l963 Tropeano et al. 239/204 tions of the stem. 3,301,489 1/1967 Tropeano et al.
- This invention relates to a pop-up sprinkler which contains an improved, multi-functional stabilizer assembly.
- Pop-up sprinklers are well known. They occupy a concealed, retracted position below ground level when not in use and assume a raised position for sprinkling in response to the introduction of water under pressure. In addition to containing properly functioning component parts, such sprinklers should exhibit only minimal vibration or lateral movement during operation in order to avoid disruption of the spray pattern and to minimize the undesirable effects which such vibration exerts on the internal components of the sprinkler. It is also essential to provide such sprinklers with effective and long-lived internal seals so as to avoid water leakage and to prevent damage which may be caused by the solids carried in the water. It is also desirable that the component parts of the sprinkler be readily removable for maintenance and replacement without the need for resorting to inconvenient and cumbersome procedures and/or the use of special tools.
- An additional object is to secure the stern which receives the sprinklerhead to the sprinkler in such a manne r as to reinforce its strength.
- the pop-up portion of the sprinkler with a stabilizing means which may contain a plurality of arms radially extending toward the inside wall of the sprinkler housing.
- the arms of the stabilizing means engage the inside wall and in so doing perform a number of valuable functions.
- the stabilizing means also serves to position other component parts so as to provide an internal seal-which assures leak-proof performance.
- the stabilizing means is also interrelated with the other component parts of the pop-up portion so as to facilitate the manual removal and disassembly of the interior structure without hav ing to use special tools and techniques, the latter characteristic being a particular advantage in such sprinklers which are positioned below ground level.
- the stabilizing means is also circumferentially positioned around the section of the pop-up stem which receives the sprinkler head, thereby providing greater strength and rigidity to this somewhat weaker area, and reinforcing its ability to engage the sprinkler head solely by threaded engagement.
- the stabilizing means is preferably connected to the stem near its upper end and moves up and down with the stem, thereby maximizing its stabilizing effect in all vertical positions of the sprinkler head.
- the construction and multifunctional nature of the stabilizing means represents a major improvement over the prior art.
- the stabilizing means a single component, is directly responsible for providing a number of the characteristics that are essential to the proper functioning'of a pop-up sprinkler.
- the substantial reduction in vibration and lateral movement in the pop-up portion and the formation of an in ternal leak-proof seal are directly attributable to the positioning of the stabilizing means during the sprinkling operation.
- the force of the water leaving the sprinkler head results in a lateral movement of the popup portion.
- This lateral movement causes the stabilizing means to contact the inner housing wall, thereby immediately preventing any greater lateral movement.
- the slightly tilted configuration of the pop-up portion places the stern section thereof immediately adjacent the housing so that the presence ofa simple sealing ring therebetween assures the formation of a leak-proof seal.
- FIG. 1 is a view partly in cross-section and partly in elevation depicting a typical sprinkler of this invention in retracted, non-operational position;
- FIG. 2 is a view partly in cross-section and partly in elevation depicting the sprinkler of FIG. 1 in poppedup, operational position;
- FIG. 3 and FIG. 4 are transverse sectional views taken respectively along lines 3-3 and 44 of FIG. 1;
- FIG. 5 is a fragmentary sectional view showing the seal formed between the bushing and the tubular stern during the sprinkling operation.
- the instant pop-up sprinkler comprises a housing 10 having an upper chamber 12 and a lower chamber 14 of reduced diameter.
- the housing 10 serves the dual function of protecting the component parts of the sprinkler from the elements encountered in their underground location and or providing a means for mounting these parts.
- the sprinkler head 44 is mounted on'a stem 26 which in turn is mounted in said upper and lower chamber l2, 14 for vertical movement.
- stem 26 When water under pressure is delivered to guide chamber 14, stem 26 is forced upward and correspondingly raises sprinkler head 44 above ground level. The water passes through stem 26 into sprinkler head 44 for appropriate discharge in the desired pattern and range.
- Stem 26 is also provided with stabilizing means 36 vertically slidable with stem 26, located in the upper chamber 12, and shaped to cooperate with the walls of chamber 12 to stabilize stem 26 when in pop-up position.
- Stabilizing means 36 is so constituted as to provide the advantages described hereinabove.
- the pop-up sprinkler of this invention includes a housing preferably of a molded plastic material defining an enlarged upper chamber 12 and a lower guide chamber 14 of reduced diameter.
- the chamber 12 may have an upper even more enlarged extension chamber 12'.
- the bottom of guide chamber 14 is provided with a fitting 16 for attachment to a water supply pipe, not shown.
- bushing 18 which has a corresponding externally screw-threaded portion.
- Bushing 18 is provided with at least one, and preferably two, axially extending diametrically opposed key slots 20 (see FIG. 3). It is also provided at its lower end with an annular seat 22, which is generally conical in shape.
- a sealing ring 24 may be inserted into a recess 25 in bushing 18 so as to pro vide an improvedseal between bushing 18 and housing 14' when they are in threaded engagement.
- Bushing 18 is adapted to receive a tubular stem 26 which is provided with at least one, and preferably two, axially extending diametrically opposed key ribs 28 that mate with the key slots 20 in bushing 18.
- This configuration permits tubular stem 26 to slide axially in bushing 18 in response to the introduction of water pressure but prevents stem 26 from engaging in rotating movement in relation to bushing 18.
- the lower extremity of tubularstem 26 is provided with an external flange 30 which is sized to engage the annular seat 22 on bushing 18 when stem 26 is in extended, pop-up position, thereby to limit the upward movement of stem 26.
- the key ribs 28 may be notched at a point above flange 30 in order to receive and retain sealing ring 32 which contacts bushing 18 when stem.26 is in upwardly extended position.
- the seal formed between bushing 18 and stem 26 insures leak-proof performance and, particularly, prevents dirt or other foreign matter from entering the bearing surfaces between bushing 18 and stem 26.
- Filtering means 34 may be affixed to the lower end of stem 26 in order to further prevent the introduction of dirt and other foreign matter into the system.
- Stabilizing means 36 comprises a central collar 38 with a plurality of arms 40 radially extending therefrom, four arms equally spaced from one another being preferred in order to readily control the free movement of stem 26 in all directions.
- Stabilizing assembly 36 is generally provided with key slots 42 that mate with key ribs"28 on tubular stem 26 so as to restrain the stabilizer 36 against rotation relative to stem 26.
- the inner diameter of collar 38 is dimensionally related to the outer diameter of tubular stem 26 in order to permit stabilizing means 36 to be fitted over stem 26 and secured thereto in light press fit fashion.
- stabilizing means 36 reinforces the strength of the upper end of stem 26 to subsequently receive the sprinkler head 44 by means of threaded engagement.
- the circumferential positioning of means 36 provides greater rigidity to the stem and exerts inward pressure against the stemso as to substantially eliminate this possibility.
- Stabilizing means 36 when secured to tubular stem 26 is positioned in sprinkler-receiving chamber 12 with its arms 40 radially extending toward and close to the wall of chamber 12. Arms 40 preferably do not actually contact the wall of chamber 12 but, rather, are spaced therefrom. The clearance between arms 40 and the wall will necessarily be small inasmuch as this distance is indicative of the amount of lateral movement which can be tolerated in tubular stem 26.
- the slight tilt of stabilizing means 36 when a small clearance is provided between the arms 40 and the chamber wall assures the proper positioning of sealing ring 32 to form a leakproof seal between bushing 18 and tubular stem 26. The clearance also permits the free rotation of stabilizing means 36 in disengaging the interior component parts of the sprinkler from the housing 10.
- tubular stem 26 is internally screwthreaded to receive a sprinkler unit 44.
- Any conventional sprinkler unit may be utilized, with the oscillating, impulse type being preferred. It should be noted that the nature of the sprinkler unit does not form part of the instant invention.
- a typical oscillating sprinkler unit is provided with an orifice directed upwardly and radially and, in addition, is provided with a mechanism which effects the movement of the sprinkler within the boundaries of a predetermined arc of travel.
- the sprinkler will also contain an oscillating deflector which is positioned in the path of the stream of water.
- the sprinkler unit.44 is normally received in chamber 12, and may be at least partially received in chamber 12.
- the sprinkler assembly of this invention Since the sprinkler assembly of this invention is beneath ground level G when not in use (FIG. 1), it will have a protective cover 46 which is secured to the sprinkler head 44 by means of a bushing nut 48 which is threaded onto a threaded shaft 50 anchored in sprinkler head 44 and extending above the topthereof. Cover 46 thus extends and retracts in accordance with the movement of sprinkler head 44.
- the reaction force of the water leaving the sprinkler head 44 will cause a corresponding lateral movement of the stern 26 and stabilizing means 36 secured thereto (note center lines in FIG. 2).
- This lateral movement causes the arms 40 of stabilizing means 36 to traverse the slight distance that they are separated from the wall of chamber 12 and to contact the wall, thereby immediately preventing any further lateral movement.
- the slight sidewise tilting movement of stabilizing means 36 also enables sealing ring 32 to engage bushing 18 so as to effect a leak-proof seal between bushing 18 and tubular stem 26.
- the seal thus formed is illustrated in FIG. 5. Since stabilizing means 36 is located adjacent the upper end of stem 26, and rises vertically with it, the stabilization effect is maximized, the stem 26 being supported at its lower end by bushing 18 and at its upper end by stabilizing means 36.
- tubular stem 26 When the water pressure is discontinued, the tubular stem 26, weighted by sprinkler head 44, falls freely to its retracted position as depicted in FIG. 1..
- the return of tubular stem 26 to its retracted position may also be effected by means of a compression-type spring 52 which is inserted between flange 30 of stem 26 and bushing 18. It is to be noted that spring 52 contacts bushing 18 above seal 22 in order to provide adequate room for containing spring 52 when it is in compressed configuration.
- a further advantage derived from the use of the improved stabilizing means 361 is the elimination of the need for special tools to remove the component parts of the sprinkler when maintenance or replacement of these parts is desired.
- cover 46 and turn stabilizing means 36 in a counterclockwise direction.
- Such rotation will be translated to tubular stem 26 in view of the mated relationship between key ribs 28 and key slots 42 which, in turn, will be translated to bushing 18 in view of the mated relationship between key ribs 28 and key slots 24])
- bushing 18 will be unthreaded from housing to enable the user to remove as a unit the entire internal assembly of the sprinkler including stem 26, stabilizing means 36, bushing 18, filtering means 34, and sprinkler head 44.
- the sprinkler may be reassembled merely by refersing this sequence of steps.
- this invention provides an improved pop-up sprinkler having novel stabilizer means which serves to prevent lateral movement in the assembly, to effect leakproof seals during the operation of the sprinkler, and to facilitate the removal of the component parts of the sprinkler.
- a pop-up sprinkler comprising:
- a housing defining an upper, relatively wide chamber and a lower, relatively narrow chamber, and conduit means in said housing for connection to a water supply and communicating with said lower chamber;
- stabilizing means operatively connected to said stern for axial movement therewith, located in said upper chamber, and extanding radially out from said stem to a location close to said housing walls able relative to said walls while providing lateral support for that portion of said stern in said upper chamber; and a sprinkler head mounted on said stem and movable therewith between said upper and lower positions; said stem, said mounting meand, said stabilizing means and said sprinkler head being readily removable without tools as an internal assembly unit from said housing.
- the pop-up sprinkler of claim 1 wherein said stabilizing means comprises a plurality of radially extending arms spaced from one another.
- a pop-up sprinkler comprising:
- a housing defining an upper chamber and a lower guide chamber having conduit means at its lower end for connection to a water supply;
- a bushing secured to the upper end of said guide chamber having a seat at its lower end and at least one axially extending key slot;
- a tubular stem extending downwardly from said upper chamber through said bushing into said guide chamber and axially slidable in said bushing, said stem containing at least one axially extending key rib fitting said key slot to provide slidable, nonrotatable movement of said stem, an external flange at its lower end sized to engage said seat on said bushing when said tubular stem is in extended position, and an annular groove positioned above said flange with sealing means disposed therein, said sealing means cooperating with said bushing when said tubular stem'is in extended position;
- stabilizer means positioned in said upper chamber and secured to the upper end of said tubular stem, said stabilizer means containing at least one key slot which engages the key rib on said stem, and a plurality of arms spaced from one another radially extending toward and slightly spaced from the wall of said upper chamber;
- a sprinkler head mounted on said tubular stem movable between a retracted position related thereto;
Abstract
Description
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28421572A | 1972-08-28 | 1972-08-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3791581A true US3791581A (en) | 1974-02-12 |
Family
ID=23089330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00284215A Expired - Lifetime US3791581A (en) | 1972-08-28 | 1972-08-28 | Pop-up sprinkler |
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US (1) | US3791581A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4353506A (en) * | 1980-09-15 | 1982-10-12 | L. R. Nelson Corporation | Pop-up sprinkler |
US4448353A (en) * | 1981-09-14 | 1984-05-15 | Dan Mamtirim | Pop-up sprinkler |
US7114665B1 (en) | 2006-01-23 | 2006-10-03 | Mc Tee Ronald H | Sprinkler head protective guard |
US20090108088A1 (en) * | 2007-10-30 | 2009-04-30 | Bredberg A J | Lawn sprinkler |
US20140203105A1 (en) * | 2013-01-18 | 2014-07-24 | Plastico Corporation | Underground liftable low-flow sprinkler |
US9108206B1 (en) | 2013-03-15 | 2015-08-18 | Anthony J. Bredberg | Water control system for sprinkler nozzle |
US9227207B1 (en) | 2013-03-15 | 2016-01-05 | Anthony J. Bredberg | Multi-nozzle cam driven sprinkler head |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1853805A (en) * | 1928-09-26 | 1932-04-12 | Elder Donald | Irrigating apparatus |
DE700012C (en) * | 1937-07-11 | 1940-12-11 | Karl J Fischer | Device for sprinkling sports fields, runways or the like. |
US2501910A (en) * | 1948-08-11 | 1950-03-28 | Arthur C Oughton | Disappearing sprinkler |
US2812977A (en) * | 1955-10-20 | 1957-11-12 | Spra Rite Distributing Company | Pop-up lawn sprinkler |
US2935266A (en) * | 1958-06-30 | 1960-05-03 | Coleondro Geraldo | Lawn sprinkler head |
US2989246A (en) * | 1959-06-15 | 1961-06-20 | Glenn L Sloane | Pop-up sprinkler head |
US3033467A (en) * | 1959-01-19 | 1962-05-08 | Edmund L Hofer | Lawn sprinkler |
US3063645A (en) * | 1961-06-12 | 1962-11-13 | Joseph C Tropeano | Sprinkler head and valve control mechanism with compressed air means |
US3086714A (en) * | 1962-10-08 | 1963-04-23 | Joseph C Tropeano | Guide construction for sprinkler head receptacle |
US3301489A (en) * | 1965-04-14 | 1967-01-31 | Joseph C Tropeano | Combination irrigator and fluid conduit adapter |
US3315898A (en) * | 1965-04-05 | 1967-04-25 | Lyntone Engineering Inc | Water motor for sprinklers |
-
1972
- 1972-08-28 US US00284215A patent/US3791581A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1853805A (en) * | 1928-09-26 | 1932-04-12 | Elder Donald | Irrigating apparatus |
DE700012C (en) * | 1937-07-11 | 1940-12-11 | Karl J Fischer | Device for sprinkling sports fields, runways or the like. |
US2501910A (en) * | 1948-08-11 | 1950-03-28 | Arthur C Oughton | Disappearing sprinkler |
US2812977A (en) * | 1955-10-20 | 1957-11-12 | Spra Rite Distributing Company | Pop-up lawn sprinkler |
US2935266A (en) * | 1958-06-30 | 1960-05-03 | Coleondro Geraldo | Lawn sprinkler head |
US3033467A (en) * | 1959-01-19 | 1962-05-08 | Edmund L Hofer | Lawn sprinkler |
US2989246A (en) * | 1959-06-15 | 1961-06-20 | Glenn L Sloane | Pop-up sprinkler head |
US3063645A (en) * | 1961-06-12 | 1962-11-13 | Joseph C Tropeano | Sprinkler head and valve control mechanism with compressed air means |
US3086714A (en) * | 1962-10-08 | 1963-04-23 | Joseph C Tropeano | Guide construction for sprinkler head receptacle |
US3315898A (en) * | 1965-04-05 | 1967-04-25 | Lyntone Engineering Inc | Water motor for sprinklers |
US3301489A (en) * | 1965-04-14 | 1967-01-31 | Joseph C Tropeano | Combination irrigator and fluid conduit adapter |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4353506A (en) * | 1980-09-15 | 1982-10-12 | L. R. Nelson Corporation | Pop-up sprinkler |
US4448353A (en) * | 1981-09-14 | 1984-05-15 | Dan Mamtirim | Pop-up sprinkler |
US7114665B1 (en) | 2006-01-23 | 2006-10-03 | Mc Tee Ronald H | Sprinkler head protective guard |
US20090108088A1 (en) * | 2007-10-30 | 2009-04-30 | Bredberg A J | Lawn sprinkler |
US7988071B2 (en) | 2007-10-30 | 2011-08-02 | Bredberg Anthony J | Lawn sprinkler |
US8328117B2 (en) | 2007-10-30 | 2012-12-11 | Bredberg Anthony J | Lawn sprinkler |
US8567697B2 (en) | 2007-10-30 | 2013-10-29 | Anthony J. Bredberg | Lawn sprinkler |
US20140203105A1 (en) * | 2013-01-18 | 2014-07-24 | Plastico Corporation | Underground liftable low-flow sprinkler |
US9089858B2 (en) * | 2013-01-18 | 2015-07-28 | Plastico Corporation | Underground liftable low-flow sprinkler |
US9108206B1 (en) | 2013-03-15 | 2015-08-18 | Anthony J. Bredberg | Water control system for sprinkler nozzle |
US9227207B1 (en) | 2013-03-15 | 2016-01-05 | Anthony J. Bredberg | Multi-nozzle cam driven sprinkler head |
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