IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0150345
(2008-04-28)
|
등록번호 |
US-8096489
(2012-01-17)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
16 |
초록
▼
A spraying device includes a housing that has a spraying unit and a trigger assembly. The spraying unit is a removable insert within the housing. The spraying unit includes an air chamber that is coupled to a liquid tank. A front end portion of the air chamber has a nozzle. The air chamber receives
A spraying device includes a housing that has a spraying unit and a trigger assembly. The spraying unit is a removable insert within the housing. The spraying unit includes an air chamber that is coupled to a liquid tank. A front end portion of the air chamber has a nozzle. The air chamber receives a liquid tube that opens in the nozzle. The liquid tube receives a needle and the needle and the liquid tube are coaxial with each other. The trigger assembly controls the flow of liquid through the liquid tube by positioning a tapered front end of the needle. The trigger assembly includes a trigger that has a first position and a second position. In the first position, the opening of the liquid tube is closed by the needle. In a second position, the liquid tube is opened to discharge a liquid from an opening of the liquid tube.
대표청구항
▼
1. A spraying device for spraying liquid comprising; a housing having a handle and a spraying unit cavity;the spraying unit cavity comprises an elongated cavity located substantially in the housing;a spraying unit completely removably locatable within the spraying unit cavity, the spraying unit comp
1. A spraying device for spraying liquid comprising; a housing having a handle and a spraying unit cavity;the spraying unit cavity comprises an elongated cavity located substantially in the housing;a spraying unit completely removably locatable within the spraying unit cavity, the spraying unit comprising a liquid tank coupled to an air chamber, the spraying unit includes a liquid tube and a needle, said spraying device unit fitting into and removable as a substantially single unit from the spraying unit cavity, anda trigger assembly including a trigger in said housing, wherein said needle acts on said liquid tube when said trigger is actuated. 2. The spraying device of claim 1, wherein the tank has a first opening with a collar and a second opening with a guide that includes a rear cap. 3. The spraying device of claim 2, wherein the rear cap receives the needle through a hole defined in a rear end of the rear cap having a diameter that is greater than the diameter of the needle. 4. The spraying device of claim 2, wherein the needle passes through the rear cap, the tank, and the liquid tube towards the nozzle, and wherein the tip of the needle is positioned in the opening of the liquid tube. 5. The spraying device of claim 2, wherein the needle includes a stopper which is positioned in the rear cap with a sealing gasket, a retainer, and a spring. 6. The spraying device of claim 5, wherein the spring is positioned between the retainer and the stopper to produce a spring force which brings the needle forward to close the liquid tube when the trigger is released. 7. The spraying device of claim 2, wherein the collar has a groove which is adapted to receive a rear end portion of the air chamber. 8. The spraying device of claim 1, wherein the air chamber has a front end portion and a rear end portion, wherein the front end portion includes a nozzle, and the rear end portion includes a circular projection along an internal surface of said rear end portion. 9. The spraying device of claim 1, wherein the liquid tube has a front end portion and a rear end portion, the front end portion having an opening that is in close proximity with the nozzle, wherein the rear end portion opens into the tank. 10. The spraying device of claim 1, wherein the trigger assembly comprises a hook and a spring, the hook being adapted to securely hold a rear end portion of the needle, the spring being coupled with a post of the trigger, and the trigger being pivoted in the housing in a predefined arrangement; said trigger having a first position, wherein the trigger is positioned upwards that the liquid tube is closed by the needle; andsaid trigger having a second position, wherein the trigger is pressed downwards from the first position to the second position to open the liquid tube so as to discharge a liquid from an opening of the liquid tube. 11. The spraying device of claim 10, wherein the needle comprises a tapered front end and a rear end, wherein the tapered front end defines a pointed tip, and wherein the rear end is coupled with the hook. 12. The spraying device of claim 10, wherein the first opening receives the rear end portion of the liquid tube. 13. The spraying device of claim 10, wherein the front end of the liquid tube comprises an internally tapered front end portion, wherein the internally tapered front end portion of the liquid tube is closed by the pointed front end of the needle in the first position. 14. The spraying device of claim 1, wherein the trigger comprises a pair of rounded projections, wherein each of the projections is inserted in its respective socket to pivot the trigger. 15. The spraying device of claim 1, wherein the housing comprises a rear end portion that includes an air inlet adapted to receive pressurized air through a hose. 16. The spraying device of claim 1, wherein the air chamber comprises an air connector which includes a pair of sleeves that are adapted to receive the respective protrusions of the receptacle to position the air connector in the housing. 17. The spraying device of claim 1, wherein the tank comprises a removable cover to refill the liquid in the tank. 18. The spraying device of claim 1, wherein the housing comprises a first shell and a second shell. 19. The spraying device of claim 18, wherein the first body shell and the second body shell each has a socket and a receptacle and each said receptacle has a protrusion. 20. The spraying device of claim 1, wherein the housing comprises a handle and a trigger slot.
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