IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0402262
(2009-03-11)
|
등록번호 |
US-8523806
(2013-09-03)
|
우선권정보 |
JP-2008-063265 (2008-03-12) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Buchanan Ingersoll & Rooney PC
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
7 |
초록
▼
A sprayer is capable of inhibiting or preventing clogging occurring in a nozzle upon ejection of a liquid through the nozzle. A sprayer includes liquid supply for separately supplying a first liquid and a second liquid different in liquid composition, and a nozzle. The nozzle includes a first flow p
A sprayer is capable of inhibiting or preventing clogging occurring in a nozzle upon ejection of a liquid through the nozzle. A sprayer includes liquid supply for separately supplying a first liquid and a second liquid different in liquid composition, and a nozzle. The nozzle includes a first flow path and a second flow path along which passes the first liquid and the second liquid supplied from the liquid supply. In addition, the nozzle includes a third flow path along which passes a gas. A merge part is provided at which the first flow path and the second flow path merge at their respective halfway parts. A vent is provided at the merge part for allowing the gas which has passed through the third flow path to flow into the merge part.
대표청구항
▼
1. A sprayer comprising a first liquid supply containing a first liquid; a second liquid supply containing a second liquid, the first and second liquids having liquid compositions different from one another;a nozzle comprising a nozzle main body and a nozzle head connected to one another; the nozzle
1. A sprayer comprising a first liquid supply containing a first liquid; a second liquid supply containing a second liquid, the first and second liquids having liquid compositions different from one another;a nozzle comprising a nozzle main body and a nozzle head connected to one another; the nozzle head comprising an ejection port passing through a distal end wall at a distal end of the nozzle head; the nozzle body comprising a first tube, a second tube and a third tube; the first tube possessing a lumen forming a first liquid flow path in fluid communication with the first liquid supply; the second tube possessing a lumen forming a second liquid flow path in fluid communication with the second liquid supply;the third tube possessing a lumen forming a gas path connectable to a gas source;a fourth tube constituting a tubular merge part possessing a lumen open at a distal end of the fourth tube, the fourth tube being positioned in the lumen of the third tube, the distal end of the fourth tube contacting the distal end wall of the nozzle head with the lumen of the fourth tube opening into the ejection port; the first tube comprising a distal end; the second tube comprising a distal end the distal end of the first tube and the distal end of the second tube being connected to the fourth tube, with the lumen of the first tube and the lumen of the second tube in communication with the lumen of the fourth tube so that the first and second liquids are mixed together in the fourth tube; anda vent disposed at a point upstream of the distal end of the fourth tube and downstream of the tubular merge part of the fourth tube to introduce the gas into the lumen of the fourth tube; and/or disposed at a point upstream of the distal end of the second tube to introduce the gas into the lumen of the second tube. 2. The sprayer according to claim 1, wherein the vent is a through hole passing through a wall of the tubular merge part. 3. The sprayer according to claim 1, wherein the first tube and the second tube are positioned inside the third tube. 4. The sprayer according to claim 3, wherein an outer surface of the first and second tubes is spaced from an inner surface of the third tube so that a gap exists between the outer surfaces of the first and second tubes and the inner surface of the third tube. 5. The sprayer according to claim 1, wherein the vent is a through hole passing through a wall of the first tube. 6. The sprayer according to claim 5, wherein the distal end of the second tube is positioned distally of the distal end of the first tube. 7. The sprayer according to claim 5, further comprising a through hole passing through a wall of the second tube. 8. The sprayer according to claim 1, further comprising a tubular part extending in a proximal direction from the merge part, the tubular part possessing an opening part forming the vent. 9. The sprayer according to claim 1, wherein the first liquid supply is a first syringe, and the second liquid supply is a second syringe. 10. The sprayer according to claim 1, comprising a valve body positioned in a through hole communicating with the gas path. 11. A sprayer comprising: supply means for separately supplying a first liquid and a second liquid comprising different liquid compositions;a nozzle comprising an outer tube, the nozzle also comprising a first liquid flow path in fluid communication with the supply means and along which the first liquid flows, the nozzle also comprising a second liquid flow path in fluid communication with the supply means and along which the second liquid flows, the nozzle also comprising a gas flow path for gas flow, the nozzle also comprising an inner tube possessing an interior, the inner tube being connected to the first flow path and the second flow path so that the first flow path and the second flow path merge together into the interior of the inner tube to mix together, in the interior of the inner tube, the first liquid flowing along the first liquid flow path and the second liquid flowing along the second liquid flow path to form a mixed liquid;the inner tube, first flow path, second flow path and gas flow path being positioned in the outer tube;the nozzle also comprising a distal end wall at a distal end of the outer tube and an ejection port passing through the distal end wall, the inner tube possessing a distal end connected to the distal end wall so the interior of the inner tube opens into the ejection port; andat least one vent communicating the interior of the inner tube with the gas flow path so that the gas passing along the gas flow path flows through the at least one vent and enters the interior of the inner tube. 12. The sprayer according to claim 11, wherein the vent is formed at the merge part. 13. The sprayer according to claim 12, wherein the gas flowing in through the vent becomes bubbles in the mixed liquid in the tube, and stirs the liquid. 14. The sprayer according to claim 11, wherein the vent is formed in at least one of the first flow path and the second flow path. 15. The sprayer according to claim 11, further comprising a proximally extending tubular part possessing an opening part forming the at least one vent. 16. The sprayer according to claim 11, wherein the first flow path includes an open end, and the second flow path includes an open end, the open end of the first flow path and the open end of the second flow path being shifted relative to one another in a longitudinal direction of the first and second liquid flow paths. 17. The sprayer according to claim 11, wherein the nozzle comprises an outer tube and two inner tubes positioned inside the outer tube, each inner tube possessing a through hole, the through hole of one of the inner tubes being the first liquid flow path and the through hole of the other inner tube being the second liquid flow path, and wherein a gap exists between outer surfaces of the inner tubes and an inner surface of the outer tube, the gap being the gas flow path. 18. The sprayer according to claim 11, wherein the supply means comprises a syringe having a syringe barrel containing the first liquid, a gasket positioned in the syringe barrel, a plunger connected to the gasket and operable to slidably move the gasket within the syringe barrel. 19. The sprayer according to claim 11, comprising pressure adjusting means for adjusting the pressure in the gas flow path. 20. A method of applying a mixed liquid to a living body comprising: supplying a first liquid along a first liquid path to an inner tube of a nozzle, the inner tube and the first liquid path being located within an outer tube;supplying a second liquid along a second liquid path different from the first liquid path to the inner tube of the nozzle to mix the first liquid and the second liquid together in the inner tube to produce a mixed liquid, the first and second liquids comprising different liquid compositions, the second liquid path being located within the outer tube, the nozzle comprising a distal end wall at a distal end of the outer tube, the distal end wall being provided with a through hole forming an ejection port, the inner tube possessing a distal end connected to the distal end wall so an interior of the inner tube opens into the ejection nozzle;supplying gas to the interior of the tube; andejecting the mixed liquid and the gas through the distal end of the inner tube and through the ejection port of the nozzle at the living body. 21. The method according to claim 20, wherein the gas is supplied to the inner tube by way of a vent, and the gas flowing through the vent producing bubbles in the mixed liquid and stirring the liquid.
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