US20060153707A1 - Battery operated spray head retrofittable onto existing pump spray containers and producing substantially continuous spray - Google Patents

Battery operated spray head retrofittable onto existing pump spray containers and producing substantially continuous spray Download PDF

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Publication number
US20060153707A1
US20060153707A1 US11/034,600 US3460005A US2006153707A1 US 20060153707 A1 US20060153707 A1 US 20060153707A1 US 3460005 A US3460005 A US 3460005A US 2006153707 A1 US2006153707 A1 US 2006153707A1
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United States
Prior art keywords
cycle
spray
pump
sprayer according
sprayer
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.)
Abandoned
Application number
US11/034,600
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English (en)
Inventor
Steven Sweeton
Linn Wanbaugh
David DeJong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ST GOBALN-CALMAR Inc
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US11/034,600 priority Critical patent/US20060153707A1/en
Assigned to ST. GOBALN-CALMAR, INC. reassignment ST. GOBALN-CALMAR, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEJONG, DAVID L., SWEETON, STEVEN L., WANBAUGH, LINN D.
Priority to US11/128,841 priority patent/US20060153709A1/en
Priority to US11/128,840 priority patent/US7255294B2/en
Priority to PCT/US2006/000701 priority patent/WO2006076297A2/fr
Priority to CNA2006800022659A priority patent/CN101258326A/zh
Priority to EP06717853A priority patent/EP1836396A2/fr
Priority to TW095101154A priority patent/TW200630164A/zh
Priority to ARP060100145A priority patent/AR052456A1/es
Publication of US20060153707A1 publication Critical patent/US20060153707A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric

Definitions

  • This invention relates broadly to battery operated fluid pumps. More particularly, this invention relates to a battery operated fluid pump contained in a spray head which fits onto existing pump spray containers and which exhibits substantially continuous spray.
  • the propellant can be environmentally unfriendly. While environmentally friendly propellants do exist, generally, they do not charge as well as the unfriendly gases.
  • Still another popular sprayer is the air pump sprayer seen most frequently with insecticides and liquid garden products. The pump sprayer includes a hand operated air pump which is used to charge the container with compressed air. After it is charged, it operates much like an aerosol can. The pump sprayer is environmentally friendly but requires considerable effort to keep charged because air is not as efficient a propellant as environmentally unfriendly gases such as FREON or hydrocarbon gasses.
  • battery powered pump sprayers Most of these devices include a spray mechanism which is similar to the ubiquitous push button (or trigger) pump sprayer but which is coupled to a battery powered electric motor by some type of linkage which converts the rotary action of the motor into an oscillatory motion to drive the pump piston.
  • Many of these battery operated pump sprayers are designed to work only with a specially constructed bottle, i.e. they are not retrofittable to existing pump spray bottles. Many also have weight distribution problems, i.e. they are top heavy and cause the bottle to which they are attached to tip over. Many of these battery powered pumps have large priming volumes, thus causing a delay between the time the pump is activated and the time liquid begins to be dispensed. Significantly, these pumps do not really provide a constant spray. They provide a continuous pulsed spray like that obtained by repeatedly squeezing the trigger of pushing the button on a hand operated spray pump.
  • a battery operated spray pump includes a piston pump having a double wave cam which is pushed by a pair of rotating cam pushers coupled to the electric motor via a gear transmission.
  • the double wave cam has an unequal duty cycle, i.e. it uses more time to expel fluid from the piston cylinder than it uses in filling the cylinder.
  • the cam pushers rotate at a speed which, in conjunction with the duty cycle of the cam, produces a low pressure relatively constant stream.
  • the duty cycle of the cam is approximately 270° and the speed of the cam pushers is approximately three rotations per second.
  • FIG. 1 is a partially transparent side elevation view of a sprayer according to the invention
  • FIG. 2 is a partially disassembled perspective view of the sprayer of FIG. 1 ;
  • FIG. 3 is a further disassembled perspective view of the sprayer of FIGS. 1 and 2 ;
  • FIG. 4 is an exploded perspective view of the motor drive components
  • FIG. 5 is an enlarged side elevation view of the double wave cam
  • FIG. 6 is an enlarged top plan view of the double wave cam
  • FIG. 7 is an enlarged side elevation view of the cam pusher
  • FIG. 8 is an enlarged top plan view of the cam pusher
  • FIG. 9 is an exploded perspective view of the piston pump components.
  • FIG. 10 is a view similar to FIG. 5 but of a presently preferred double wave cam.
  • a battery operated spray head 10 includes an ergonomic housing 12 coupled to a threaded bottle coupling 14 and including an adjustable nozzle 16 and a trigger 18 .
  • the rear of the housing 12 includes a battery compartment 20 and extends rearward a sufficient amount to rest comfortably on the hand of the user when the user squeezes the trigger.
  • the power source (batteries) 22 Inside the housing 12 , there are several subsystems, including the power source (batteries) 22 , an electric motor 24 , a transmission 26 , and a piston pump 28 .
  • the trigger 18 is arranged so that when it is squeezed, it operates a double valve 30 and an electrical switch 32 .
  • One part of the double valve 30 fluidly couples the pump 28 to a tube (not shown) which extends from the valve 30 into the bottle 1 to which the bottle coupling 14 is attached.
  • the other part of the double valve opens an air path from the atmosphere to the interior of the bottle 1 via a tube 34 which extends from an opening (not shown) in the housing 12 to the valve 30 .
  • the double valve 30 and the electrical switch 32 are described in co-owned U.S. Pat. No. 6,752,330 to DiMaggio et al., the complete disclosure of which is hereby incorporated by reference herein.
  • FIG. 4 illustrates parts of the motor drive and transmission subsystems. These pieces include a front mounting bracket 40 , a rear mounting bracket 42 , a pinion gear 44 , a reduction gear 46 with associated axle 48 , a cam pusher drive gear 50 with associated axle 52 and rear spacer 54 , and a double wave cam 56 .
  • the motor 24 is coupled to the front mounting bracket 40 with its-drive shaft 24 a extending rearward (see FIG. 3 as well).
  • the pinion gear 44 is coupled to the motor drive shaft 24 a .
  • the reduction gear 46 is mounted between the front bracket 40 and the rear bracket 42 on its axle 48 .
  • the large diameter portion 46 a of the reduction gear 46 engages the pinion gear 44 .
  • the small diameter portion 46 b of the reduction gear 46 is engaged by the pusher drive gear 50 .
  • the pusher drive gear 50 is mounted between the reduction gear 46 and the rear bracket 42 on the axle 52 which engages both the spacer 54 and the double wave cam 56 which is mounted in the front bracket 40 .
  • the double wave cam 56 includes an inner cylinder 56 a and an outer cylinder 56 b , each being formed to present a cam surface 56 c , 56 d , respectively, at one end thereof.
  • the cam surfaces 56 c , 56 d are preferably identical in cam action (though having different diameters) and are offset from each other by 180 degrees.
  • a reduced diameter cylinder 56 e extends axially therefrom and a pair of arms 56 f , 56 g extend radially outward.
  • the cammed end of the double wave cam 56 is designed to interact with the pusher drive gear 50 which is illustrated in detail in FIGS. 7 and 8 .
  • the pusher drive gear 50 is generally disk shaped having a central mounting hole 50 a and an outer plurality of gear teeth 50 b arranged along its perimeter.
  • a pair of cam pusher surfaces 50 c , 50 d are arranged on one side of the drive gear 50 . These surfaces follow a circular path having the same center as the gear 50 but have unequal radii. The radii are chosen to match the diameters of the inner and outer cylinders 56 a , 56 b of the double wave cam 56 .
  • the pusher surface 50 c is dimensioned to interact with the cam surface 56 c of the inner cylinder 56 a of the double wave cam 56 .
  • the pusher surface 50 d is dimensioned to interact with the cam surface 56 d of the outer cylinder 56 b of the double wave cam 56 .
  • the piston pump assembly 28 includes a generally T-shaped valve body 60 having three openings 60 a - 60 c .
  • Piston components 62 - 68 are fitted into the back opening 60 a of the valve body 60 .
  • Inlet ball valve components and tube connector 70 - 78 are fitted in the bottom opening 60 b of the valve body 60 .
  • Spray nozzle components 80 - 84 and 16 are fitted to the front opening 60 c of the valve body 60 .
  • the piston components include a spring 62 , a piston 64 , a piston rod 66 , and a retainer cap 68 .
  • the spring 62 is inserted into the rear opening 60 a of the valve body 60 and abuts an interior annulus (not shown).
  • the piston 64 is inserted into the valve body 60 behind the spring which biases the piston backwards.
  • the piston rod 66 is inserted behind the piston 64 and the retainer cap 68 is attached by force fitting to the valve body 60 .
  • the retainer cap 68 has a central opening through which the piston rod 66 extends.
  • the piston, piston rod, and the interior of the valve body wherein the piston moves are preferably coated with a silicone lubricant (not shown).
  • the inlet ball valve components include a ball cage 70 having interior vanes (not shown), a valve ball 72 , a retainer tube 74 , a tube connector 76 , and an inlet elbow 78 .
  • the retainer tube 74 , adapter tube 76 , and inlet elbow 78 are coupled to each other by epoxy and the retainer tube 74 is force fit into the bottom opening 60 b of the valve body 60 capturing the ball 72 and the ball cage 70 . It will be appreciated however that some or all of the retainer tube 74 , adapter tube 76 , and inlet elbow 78 may be integrally formed.
  • the spray nozzle components include a discharge valve 80 , a volume reducer 82 , spin mechanics 84 , and an adjustable nozzle 16 .
  • the discharge valve is a circular flapper valve having a post 80 a which extends forward into the volume reducer 82 .
  • the volume reducer occupies a cylindrical space having a diameter smaller than the diameter of the valve 80 .
  • the volume reducer 82 has a forwardly extending post 82 a upon which the spin mechanics 84 is mounted. All of those components are inserted into the forward end 60 c of the valve body 60 and the nozzle 16 is snap fit over the forward end of the valve body 60 where it retains the other components but is free to rotate.
  • the transmission assembly 26 is mounted behind the piston pump assembly 28 with the double wave cam 56 mounted in the front bracket 40 by the arms 56 f , 56 g engaging slots 40 a , 40 b in the forward extending arms 40 c , 40 d of the bracket 40 .
  • the cam 56 is arranged so that its cam surfaces 56 c , 56 d face and engage the pusher surfaces 50 c , 50 d of the gear 50 .
  • the pump assembly 28 is mounted between the arms 40 c , 40 d of the bracket 40 with the piston rod 66 abutting the cylinder 56 e of the double cam 56 .
  • rotation of the motor drive shaft 24 a causes rotation of the pinion gear 44 which rotates the reduction gear 48 at a slower rate.
  • the reduction gear 48 causes rotation of the drive gear 50 .
  • the pusher surfaces 50 c , 50 d engage the cam surfaces 56 c , 56 d and cause the double wave cam 56 to reciprocate back and forth against the piston rod 66 .
  • This causes the piston 64 to move back and forth in the valve body 60 .
  • the ball 72 is lifted by negative pressure in the valve body 60 , allowing liquid to enter the valve body from the container 1 ( FIGS. 1 and 2 ).
  • the flapper valve 80 is closed, preventing air from entering the valve body through the nozzle 16 .
  • the ball 72 drops, sealing the ball valve and preventing liquid from reentering the container 1 .
  • liquid is pushed forward against the flapper valve 80 causing it to open.
  • the fluid then enters the reduced volume annular chamber defined by the volume reducer 82 and the front of the valve body 60 . The liquid passes through this chamber and out of the nozzle 16 .
  • the forward moving duty cycle (the spray duty cycle) of the piston and the rearward moving duty cycle (the fill duty cycle) of the piston are unequal. In particular, this allows the piston to move more quickly during the fill duty cycle than during the spray duty cycle. In other words, the piston spends more time expelling fluid through the nozzle than it spends drawing fluid from the container into the valve body. This helps overcome the “pulsing” nature of certain prior art pumps and results in what appears to be a more continuous spray.
  • a 270° spray duty cycle and a 90° fill duty cycle is utilized. This arrangement is illustrated schematically in FIG. 10 which is similar to FIG. 5 with similar reference numerals (increased by 100) referring to similar parts.
  • the cam surface 156 d has a downward sloped portion 156 d - 1 of approximately 90° and an upward sloped portion 156 d - 2 of approximately 270°.
  • the cam surface 156 c has the same configuration as surface 156 d , but offset by 180°.
  • the presently preferred embodiment uses a 270°/90° duty cycle, those skilled in the art will appreciate, however, that other unequal duty cycles could be used to obtain similar results.
  • the duty cycle can be optimized for different kinds of fluids, optimizing the spray characteristics vs. the perceived pulsation of the spray. For example, if the fill duty cycle is longer than the spray duty cycle, this allows for a higher pressure spray resulting in finer atomization and/or greater spray distance at the cost of perceived pulsation.
  • the transmission 26 is arranged so that the piston 64 cycles between two and ten cycles per second, and most preferably between 2.5 and 4 times per second. This, together with the spray duty cycle discussed above, results in an apparently constant stream at a relatively low pressure (5-200 psi).
  • the spray head of the invention is well balanced, small, and is retrofittable to many existing fluid containers taking the place of a manual spray pump.
US11/034,600 2005-01-13 2005-01-13 Battery operated spray head retrofittable onto existing pump spray containers and producing substantially continuous spray Abandoned US20060153707A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US11/034,600 US20060153707A1 (en) 2005-01-13 2005-01-13 Battery operated spray head retrofittable onto existing pump spray containers and producing substantially continuous spray
US11/128,841 US20060153709A1 (en) 2005-01-13 2005-05-13 Battery operated spray head having an improved housing
US11/128,840 US7255294B2 (en) 2005-01-13 2005-05-13 Battery operated spray head having an improved housing
PCT/US2006/000701 WO2006076297A2 (fr) 2005-01-13 2006-01-10 Tete de pulverisation actionnee par batterie adaptable sur des contenants de pulverisation a pompe existants et produisant une pulverisation sensiblement continue
CNA2006800022659A CN101258326A (zh) 2005-01-13 2006-01-10 可改装到已有泵喷射容器上并产生大体连续喷射的电池操作喷头
EP06717853A EP1836396A2 (fr) 2005-01-13 2006-01-10 Tete de pulverisation actionnee par batterie adaptable sur des contenants de pulverisation a pompe existants et produisant une pulverisation sensiblement continue
TW095101154A TW200630164A (en) 2005-01-13 2006-01-12 Battery operated liquid sprayer for use with fluid container
ARP060100145A AR052456A1 (es) 2005-01-13 2006-01-13 Cabeza rociadora a bateria retroajustable a contenedores rociadores a bomba existentes con produccion de rocio sustancialmente continuo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/034,600 US20060153707A1 (en) 2005-01-13 2005-01-13 Battery operated spray head retrofittable onto existing pump spray containers and producing substantially continuous spray

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US11/128,840 Continuation-In-Part US7255294B2 (en) 2005-01-13 2005-05-13 Battery operated spray head having an improved housing
US11/128,841 Continuation-In-Part US20060153709A1 (en) 2005-01-13 2005-05-13 Battery operated spray head having an improved housing

Publications (1)

Publication Number Publication Date
US20060153707A1 true US20060153707A1 (en) 2006-07-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/034,600 Abandoned US20060153707A1 (en) 2005-01-13 2005-01-13 Battery operated spray head retrofittable onto existing pump spray containers and producing substantially continuous spray

Country Status (6)

Country Link
US (1) US20060153707A1 (fr)
EP (1) EP1836396A2 (fr)
CN (1) CN101258326A (fr)
AR (1) AR052456A1 (fr)
TW (1) TW200630164A (fr)
WO (1) WO2006076297A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060208005A1 (en) * 2005-03-17 2006-09-21 Sweeton Steve L Compact battery operated spray head fittable onto existing pump spray containers and providing improved balance
US20110198413A1 (en) * 2008-10-22 2011-08-18 Graco Minnestoa Inc. Portable airless sprayer
US9545643B2 (en) 2008-10-22 2017-01-17 Graco Minnesota Inc. Portable airless sprayer
US10926275B1 (en) 2020-06-25 2021-02-23 Graco Minnesota Inc. Electrostatic handheld sprayer
US10968903B1 (en) 2020-06-04 2021-04-06 Graco Minnesota Inc. Handheld sanitary fluid sprayer having resilient polymer pump cylinder
US11007545B2 (en) 2017-01-15 2021-05-18 Graco Minnesota Inc. Handheld airless paint sprayer repair
US20220211028A1 (en) * 2021-01-06 2022-07-07 David Girag Portable Flame Propelling Device
US11707753B2 (en) 2019-05-31 2023-07-25 Graco Minnesota Inc. Handheld fluid sprayer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108685543A (zh) * 2018-03-28 2018-10-23 浙江欧琳生活健康科技有限公司 一种脉冲式清洗设备

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US6811099B2 (en) * 2002-11-21 2004-11-02 Saint-Gobain Calmar Inc. Battery pack for battery operated sprayer
US20060076435A1 (en) * 2004-10-13 2006-04-13 Hudson William A Battery-powered pump for liquid sprayer
US20060076434A1 (en) * 2003-12-18 2006-04-13 James Russell Hornsby Power sprayer
US7032841B1 (en) * 2004-04-27 2006-04-25 Swisher Steven L Hand-held battery power sprayer
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US3173584A (en) * 1962-11-15 1965-03-16 Steve T Giavasis Portable motor driven dispensing devices
US3255967A (en) * 1964-03-18 1966-06-14 Me Hi Entpr Inc Fog dispenser having a motor for simultaneously operating a pump and impeller
US3901449A (en) * 1974-03-01 1975-08-26 Hudson Mfg Co H D Cordless electric sprayer
US4151375A (en) * 1976-05-12 1979-04-24 Societa Italiana Telecomunicazioni Siemens S.P.A. System for selectively shifting groups of bits for temporary storage in a processor memory of a telephone exchange
US4273269A (en) * 1978-02-08 1981-06-16 Davis George B Jun Hand held electric caulking gun
US4322022A (en) * 1980-03-19 1982-03-30 Whirlco, Inc. Quick release for helically-threaded drive unit
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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060208005A1 (en) * 2005-03-17 2006-09-21 Sweeton Steve L Compact battery operated spray head fittable onto existing pump spray containers and providing improved balance
WO2006101730A2 (fr) * 2005-03-17 2006-09-28 Saint-Gobain Calmar, Inc. Tete de pulverisateur mise en oeuvre au moyen d'une batterie compacte, adaptable sur des contenants de pulverisation a pompe existants et conferant un equilibre ameliore
WO2006101730A3 (fr) * 2005-03-17 2007-07-26 Saint Gobain Calmar Inc Tete de pulverisateur mise en oeuvre au moyen d'une batterie compacte, adaptable sur des contenants de pulverisation a pompe existants et conferant un equilibre ameliore
US10919060B2 (en) 2008-10-22 2021-02-16 Graco Minnesota Inc. Portable airless sprayer
US11446690B2 (en) 2008-10-22 2022-09-20 Graco Minnesota Inc. Portable airless sprayer
US9517479B2 (en) 2008-10-22 2016-12-13 Graco Minnesota Inc. Portable airless sprayer
US9545643B2 (en) 2008-10-22 2017-01-17 Graco Minnesota Inc. Portable airless sprayer
US9604234B2 (en) 2008-10-22 2017-03-28 Graco Minnesota Inc. Portable airless sprayer
US9604235B2 (en) 2008-10-22 2017-03-28 Graco Minnesota Inc. Portable airless sprayer
US9914141B2 (en) 2008-10-22 2018-03-13 Graco Minnesota, Inc. Portable airless sprayer
US20110198413A1 (en) * 2008-10-22 2011-08-18 Graco Minnestoa Inc. Portable airless sprayer
US11779945B2 (en) 2008-10-22 2023-10-10 Graco Minnesota Inc. Portable airless sprayer
US11759808B1 (en) 2008-10-22 2023-09-19 Graco Minnesota Inc. Portable airless sprayer
US11623234B2 (en) 2008-10-22 2023-04-11 Graco Minnesota Inc. Portable airless sprayer
US8596555B2 (en) 2008-10-22 2013-12-03 Graco Minnesota Inc. Portable airless sprayer
US11446689B2 (en) 2008-10-22 2022-09-20 Graco Minnesota Inc. Portable airless sprayer
US11007545B2 (en) 2017-01-15 2021-05-18 Graco Minnesota Inc. Handheld airless paint sprayer repair
US11707753B2 (en) 2019-05-31 2023-07-25 Graco Minnesota Inc. Handheld fluid sprayer
US10968903B1 (en) 2020-06-04 2021-04-06 Graco Minnesota Inc. Handheld sanitary fluid sprayer having resilient polymer pump cylinder
US11738358B2 (en) 2020-06-25 2023-08-29 Graco Minnesota Inc. Electrostatic handheld sprayer
US10926275B1 (en) 2020-06-25 2021-02-23 Graco Minnesota Inc. Electrostatic handheld sprayer
US20220211028A1 (en) * 2021-01-06 2022-07-07 David Girag Portable Flame Propelling Device
US11877572B2 (en) * 2021-01-06 2024-01-23 David Girag Portable flame propelling device

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EP1836396A2 (fr) 2007-09-26
WO2006076297A3 (fr) 2008-01-03
TW200630164A (en) 2006-09-01
CN101258326A (zh) 2008-09-03
WO2006076297A2 (fr) 2006-07-20
AR052456A1 (es) 2007-03-21

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