WO1997036689A1 - Shroud with cartridge based shut-off for sprayers - Google Patents
Shroud with cartridge based shut-off for sprayers Download PDFInfo
- Publication number
- WO1997036689A1 WO1997036689A1 PCT/US1996/004570 US9604570W WO9736689A1 WO 1997036689 A1 WO1997036689 A1 WO 1997036689A1 US 9604570 W US9604570 W US 9604570W WO 9736689 A1 WO9736689 A1 WO 9736689A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- valve
- shroud
- cartridge based
- actuator
- Prior art date
Links
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 210000003813 thumb Anatomy 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims 43
- 238000010168 coupling process Methods 0.000 claims 43
- 238000005859 coupling reaction Methods 0.000 claims 43
- 230000013011 mating Effects 0.000 claims 3
- 230000000994 depressogenic effect Effects 0.000 abstract description 10
- 239000003086 colorant Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
Definitions
- Sprayers of the garden, agricultural or industrial variety which include a tank with hand actuated pump for pressurizing a liquid therein, usually have a valve controlled outlet including a hose, rod and dispensing nozzle.
- Typical valves for such sprayers are disclosed in commonly assigned U.S. Patent Nos. 3,321.178, 3,343,795, 3,343,804, 3,670,966 and 4,933,569.
- a principal object of the present invention is to provide a valve for a sprayer with a shroud that permits color coordination with the sprayer tank.
- Another object is to provide a shroud of the foregoing type that advantageously receives the valve in the form of a cartridge that permits standardization of the valve, while permitting flexibility in the design and aesthetics of the shroud.
- a further object is to provide a shroud of the foregoing type which is digitally manipulated to provide for intermittent or continuous actuation of the valve and, consequently, spraying of the sprayer tank contents.
- Another important object is to provide a shroud of the foregoing type which enables an extension rod to be rotated for underleaf as well as overleaf spraying.
- Still another object is to provide a shroud of the foregoing type that advantageously receives a filter in cartridge fo ⁇ n for filtering out foreign matter that could otherwise cause clogging or sticking of the valve.
- Figure 1 is a perspective view of the shroud containing a cartridge based shut-off coupled with a sprayer tank and extension rod with discharge nozzle shown in phantom;
- Figure 2 is a longitudinal sectional view of the shroud containing a valve and filter in cartridge form taken along the line 2-2 of Figure 3 and showing the valve closed;
- Figure 3 is a longitudinal sectional view taken along the line 3-3 of Figure 2;
- Figure 4 is a similar longitudinal sectional view showing the shroud actuator lever depressed to open the valve for intermittent spraying;
- Figure 5 is a similar longitudinal sectional view showing the depressed shroud actuator lever locked to retain the valve open for continuous spraying;
- Figure 6 is a cross sectional view taken along the line 6-6 of Figure 3;
- Figure 7a is a cross sectional view taken along the line 7a-7a of Figure 3;
- Figure 7b is a cross sectional view taken along the line 7b-7b of Figure 5;
- Figure 8 is a cross sectional view taken along the line 8-8 of Figure 3.
- Figure 9 is a cross sectional view taken along the line 9-9 of Figure 3.
- Figure 10 is an enlarged fragmentary sectional view illustrating a safety feature of the present invention to detect pressurization of the tank when an attempt is made to uncouple the hose connection.
- a compression sprayer 10 includes a blow molded plastic tank 12 from which extends a hose 14 which is connected with a shroud and cartridge based shut-off assembly 16 of the invention which in turn, is connected with an extension rod 18 having a discharge nozzle 20.
- the shroud 22 includes a housing 24 having a series of spaced lateral ribs 26 for increasing housing rigidity and for conveniently receiving and centering the cartridge based shut-off 28 and filter cartridge 30.
- the housing 24 is provided with a lateral opening 32 for exposing a digitally engaging protrusion 34 of a thumb latch or lock 36 which is slidable longitudinally to release and lock in a depressed position an actuator lever 38 extending outwardly through a larger lateral opening 40 of the housing 24.
- the thumb latch 36 is formed with a pair of cantilevered spring arms 42 having laterally extending triangular lugs 44 which advantageously ride between a pair of elongated centering ribs 46.
- the combination of spring arms 42 with triangular lugs 44 and centering ribs 46 prevent the thumb latch from sticking and not move smoothly by effectively decreasing friction.
- the distal end of the thumb latch 36 includes the lateral protrusion 34 which includes a pair of opposed edges 48 for riding on the exterior of the housing 24.
- the proximal end of the thumb latch 36 is provided with a lateral latching lug 50 for engaging surfaces of the actuator lever 38 to lock it in a depressed position for continuous spraying.
- the thumb latch is movable between a forward position at which it does not engage the actuator lever 38 to permit intermittent spraying to a rearward position at which it engages the actuator lever 38 in its depressed position for continuous spraying
- the actuator lever 38 includes at its distal end, a projection 52 which is pivotal on an interior surface of the housing 24 and is disposed between th s surface and the exterior surface of the cartridge based shut-off 28.
- the finger engaging intermediate part 54 extends outwardly of the opening 40 of housing 24.
- the proximal end of the actuator lever 38 includes a lateral latching arm 56 having opening 58 that permits the filter cartridge 30 to extend therethrough.
- this opening 58 is adapted to receive the latching lug 50 of the thumb latch 30 so that it will engage the inner edge 60 of the latching arm 56 to latch the actuator lever 38 in its depressed position for continuous spraying.
- a pair of bearing points 59 on the interior of the intermediate part 54 for engaging directly with the actuator arm of the cartridge based shut-off 28 with decreased friction.
- a rotatable nose cone 66 having a bore 68 and a forward larger bore 70 which conveniently receives extension rod 18 in a fluid tight manner well known in the art.
- the nose cone 66 includes a circumferentially extending radial flange 72 which engage with internally threaded front retainer nut 74 threadedly received on the externally threaded housing distal end 64.
- the rear end 76 of the nose cone 66 is relatively rotatable in and sealingly engaged with valve seat member 78.
- housing 24 tightly engages with external surfaces of the hose 14 which is tightly expanded over the grooved conical faces on the proximal end 82 of the filter cartridge 30.
- an internally threaded rear retainer nut 84 may be received on the externally threaded distal end 80 of housing 24.
- the filter cartridge 30 includes a suitable filter material capable of filtering foreign matter so as to prevent clogging and sticking of the valve of the cartridge based shut-off 28.
- a radial flange 88 engages in the housing proximal end 80 and this provides a positive stop for assembly of the hose on the hose connector.
- the exterior of the housing 90 of the filter cartridge is tightly cradled in the ribs 26a and 26b, as shown, and consequently centered or coaxial within the housing 24 and with respect to the cartridge based shut-off 28.
- the inner end 92 of the filter cartridge 30 is sealingly engaged within the proximal end 94 of the cartridge based shut-off 28.
- a groove 93 in the proximal end 94 of housing 28 provides sight/sound warning that tank has not been depressurized before the user removes rear retainer nut 84, all the way. If the tank is pressurized, as the person removes the rear retainer nut 84 the pressure pushes back the filter cartridge 30 unit until the inner end 92 of the filter cartridge is past the groove 93. At this point fluid or air can escape causing an audible and visual (liquid on hands) warning that there is still pressure in the tank before rear retainer nut 84 is unthreaded completely. Groove 95 is adjacent the flange 88.
- valve 102 is reciprocal in the bore 104 of the valve cylinder 98 and includes a conical front end 106 adapted to engage with the conical valve seat 100 to close the bore 104 and liquid passage through the cartridge based shut-off assembly 16. This closed position is maintained by the bias of spring 108.
- a valve actuator 110 is provided in order to open the valve 102 by retracting its conical front end 106 from the conical valve seat 100 against the bias of spring 108.
- This actuator 110 is pivotal at end 112 disposed in accommodating recess 113 of valve cylinder 98 and is provided with a pair of arms 114 which are disposed in external recesses 116 and engage external surfaces of the recesses.
- An actuator arm 120 extends outwardly from the valve cylinder 98 for engagement by the actuator lever 38. In this connection depression of the actuator arm 120 will cause it to pivot about end 112 causing the arms 114 to engage surfaces of the recesses 116 and force valve 102 rearwardly to unseat its end 106 from valve seat 100 to permit liquid flow. Release of the actuator arm 110 will have spring 108 move valve 102 forwardly seating end 106 on seat 100 to stop liquid flow.
- External longitudinal lug 118 on the valve cylinder 98 fits in slot 120 on the interior of housing 24 to serve to properly orient the cartridge based shut-off 28 in the housing 24.
- the actuator lever 38 is depressed causing the actuator arm 110 to rotate to retract and unseat valve 102. Release of the actuator 38 will cause spring 108 to return valve 102 to its closed position.
- the actuator lever 38 is depressed to unseat the valve 102 and while in the depressed position the thumb latch 36 is moved rearwardly to have latching lug 50 engage the inner edge 60 of the lateral latching arm 56 of actuator lever 38. Shifting the thumb latch forward and release of the actuator lever 38 will then permit the spring 108 to return the valve 102 to its closed position.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9535225A JPH11506980A (en) | 1996-04-03 | 1996-04-03 | Shroud with shut-off device in cartridge form for sprayer |
PCT/US1996/004570 WO1997036689A1 (en) | 1996-04-03 | 1996-04-03 | Shroud with cartridge based shut-off for sprayers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1996/004570 WO1997036689A1 (en) | 1996-04-03 | 1996-04-03 | Shroud with cartridge based shut-off for sprayers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997036689A1 true WO1997036689A1 (en) | 1997-10-09 |
Family
ID=22254914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/004570 WO1997036689A1 (en) | 1996-04-03 | 1996-04-03 | Shroud with cartridge based shut-off for sprayers |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH11506980A (en) |
WO (1) | WO1997036689A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2852310A (en) * | 1956-04-19 | 1958-09-16 | Albert W Francis | Hose nozzles |
GB1306785A (en) * | 1971-05-04 | 1973-02-14 | Zuellig Malaya Sendirian Berha | Spraying apparatus |
US3759445A (en) * | 1973-01-02 | 1973-09-18 | R King | Flexible fitting for lawn sprinkler systems |
US4618100A (en) * | 1984-11-27 | 1986-10-21 | Rain Bird Consumer Products Mfg. Corp. | Multiple pattern spray nozzle |
SU1426644A1 (en) * | 1986-05-30 | 1988-09-30 | Т.Ф.Паринов | Shower head |
US4925105A (en) * | 1989-04-14 | 1990-05-15 | Lin Hsien C | Rechargeable garden sprayer |
-
1996
- 1996-04-03 JP JP9535225A patent/JPH11506980A/en active Pending
- 1996-04-03 WO PCT/US1996/004570 patent/WO1997036689A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2852310A (en) * | 1956-04-19 | 1958-09-16 | Albert W Francis | Hose nozzles |
GB1306785A (en) * | 1971-05-04 | 1973-02-14 | Zuellig Malaya Sendirian Berha | Spraying apparatus |
US3759445A (en) * | 1973-01-02 | 1973-09-18 | R King | Flexible fitting for lawn sprinkler systems |
US4618100A (en) * | 1984-11-27 | 1986-10-21 | Rain Bird Consumer Products Mfg. Corp. | Multiple pattern spray nozzle |
SU1426644A1 (en) * | 1986-05-30 | 1988-09-30 | Т.Ф.Паринов | Shower head |
US4925105A (en) * | 1989-04-14 | 1990-05-15 | Lin Hsien C | Rechargeable garden sprayer |
Also Published As
Publication number | Publication date |
---|---|
JPH11506980A (en) | 1999-06-22 |
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