IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0578498
(2004-11-03)
|
등록번호 |
US-7775404
(2010-09-06)
|
우선권정보 |
FR-03 13093(2003-11-07) |
국제출원번호 |
PCT/FR2004/050561
(2004-11-03)
|
§371/§102 date |
20070620
(20070620)
|
국제공개번호 |
WO05/044464
(2005-05-19)
|
발명자
/ 주소 |
- Pardonge, Jean-Marc
- Fagot, Christophe
- Pruvot, Samuel
- Le Maner, François
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
11 |
초록
▼
A pump for dispensing fluid products includes a pump body, a pump chamber, at least one piston sliding inside the pump chamber for dispensing a fluid product, a dispensing orifice, and a shutter which interacts with the dispensing orifice and is embodied in such a way that it is movable and/or defor
A pump for dispensing fluid products includes a pump body, a pump chamber, at least one piston sliding inside the pump chamber for dispensing a fluid product, a dispensing orifice, and a shutter which interacts with the dispensing orifice and is embodied in such a way that it is movable and/or deformable between the closed position of the dispensing orifice and the open position thereof, the shutter being elastically driven to a closed position. The pump includes only one elastic element in the form of a spring for bringing at least one piston to a rest position after actuation and for driving the shutter to a closed position and the at least one piston is embodied in one piece with the shutter.
대표청구항
▼
The invention claimed is: 1. Pump for dispensing fluid products comprising a pump body (10), a pump chamber (20), at least one piston (30) sliding in said pump chamber (20) to dispense the fluid product, a dispensing orifice (45), and a shutter (38) interacting with said dispensing orifice (45), sa
The invention claimed is: 1. Pump for dispensing fluid products comprising a pump body (10), a pump chamber (20), at least one piston (30) sliding in said pump chamber (20) to dispense the fluid product, a dispensing orifice (45), and a shutter (38) interacting with said dispensing orifice (45), said shutter (38) being movable and/or deformable between a closed position of the dispensing orifice (45) and an open position of the dispensing orifice (45), said shutter (38) being elastically driven to its closed position, wherein the pump comprises only one elastic element (50) adapted for bringing said at least one piston (30) back to its rest position after actuation and for driving said shutter (38) to its closed position, and in that said at least one piston (30) is embodied in one piece with said shutter (38), wherein said pump is constituted by only four parts including a part forming a dispensing head (40), a part forming the piston (30) and the shutter (38), a part forming the elastic element (50), and a part forming the pump body (10), a retaining ring (15) and a plunger tube (18), wherein each of the four parts is a one-piece integral construction, the part forming the pump body (10), the retaining ring (15) and the plunger tube (18) also forming a seat (71) of an inlet valve (70) of the pump chamber (20) which interacts with a valve element (75), wherein the valve element (75) is integral with the part forming the piston (30) and the shutter (38), and the inlet valve (70) is open when the pump is in the rest position. 2. Pump according to claim 1, wherein said elastic element (50) is away from all contact with the fluid product. 3. Pump according to claim 1, wherein the retaining ring (15) is adapted to anchor said pump to a tank (60). 4. Pump according to claim 3, wherein said dispensing head (40) is connected, particularly by being snapped, irremovably onto said retaining ring (15), said dispensing head (40) and said retaining ring (15) forming a stop to define the rest position of the pump. 5. Pump according to claim 1, wherein the dispensing head (40) includes the dispensing orifice (45). 6. Pump according to claim 5, wherein said pump body (10) is placed inside said dispensing head (40). 7. Pump according to claim 1, wherein an insert (39) is placed in the pump chamber (20) upstream of the dispensing orifice (45). 8. Pump according to claim 7, wherein said insert (39) is embodied in one piece with said shutter (38). 9. Pump according to claim 1, wherein said pump chamber (20) is placed immediately upstream of said dispensing orifice (45), said shutter (38) forming an outlet valve of said pump chamber (20). 10. Device for dispensing fluid products including a tank (60), characterized in that the device comprises a pump according to claim 1. 11. Device according to claim 10, wherein the pump is anchored, particularly by being snapped on to the tank (60) with interposition of a gasket (65). 12. Pump according to claim 1, wherein the elastic element is a spring. 13. Pump according to claim 1, wherein the plunger tube (18) extends inside the pump body (1) through an axial tubular extension forming the valve seat (71) of the inlet valve (70), an insert (39) is placed in the pump chamber (20) upstream of the dispensing orifice (45), such that the insert (39) is embodied in one piece with said shutter (38) and forms the valve element (75) at a lower end thereof, and the valve element (75) is received by the valve seat (71) when the pump is in the closed position.
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