Double-acting pump for ejecting a product from a container
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0619164
(2003-07-11)
|
우선권정보 |
DE-0031751 (2002-07-13) |
발명자
/ 주소 |
- Masuzzo, Ettore
- Christ, Stefan
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
7 |
초록
▼
A double-acting pump for ejecting a product from a container, with a housing in which a piston with an axial bore is axially slideable and sealed by a first housing portion, with a hollow piston rod which extends the axial bore of the piston and is slideable in an opening of a closing cap of the hou
A double-acting pump for ejecting a product from a container, with a housing in which a piston with an axial bore is axially slideable and sealed by a first housing portion, with a hollow piston rod which extends the axial bore of the piston and is slideable in an opening of a closing cap of the housing and container. When an actuating head is actuated, it presses the piston against the force of a restoring spring toward a connecting pipe portion for an immersion pipe provided in the housing, so that a pressure is built up in a pressure chamber of the housing which presses a first valve closing piece in the connecting pipe piece against a first valve seat. In the non-actuated state, the piston releases as a result of the restoring force of a spring a passage between a pressure chamber and at least one opening in a second housing portion, wherein the connecting pipe piece has a second valve seat and a second valve closing piece which, in a position of the double-acting pump in which an actuating head is lower than the connecting pipe piece, the second valve closing piece assumes its closing position at the second valve seat, and the second valve closing piece assumes its open position in an inverted position in which the actuating head is higher than the connecting pipe piece.
대표청구항
▼
1. A double-acting pump for ejecting a product from a container, the pump comprising,a housing,a piston with an axial bore axially slideable in the housing, wherein the piston is sealed by a first housing portion,a hollow piston rod which extends the axial bore of the piston, wherein the hollow pist
1. A double-acting pump for ejecting a product from a container, the pump comprising,a housing,a piston with an axial bore axially slideable in the housing, wherein the piston is sealed by a first housing portion,a hollow piston rod which extends the axial bore of the piston, wherein the hollow piston rod is displaceable in an opening of a closing cap for the housing and container, wherein the hollow piston rod has at a free end thereof a tightly attached actuating head, wherein, when the actuating head is actuated, the piston is pressed against a restoring spring force toward a connecting pipe piece for an immersion pipe provided in the housing and builds up a pressure in a pressure chamber of the housing which presses a first valve closing piece in the connecting pipe piece against a first valve seat,wherein the actuating head contains an outlet duct connected to the bore and extending through a check valve to an ejection opening for the product,wherein at least one opening is provided in a second housing portion between the first housing portion and the closing cap,wherein, in a non-actuated state of the pump, the piston releases as a result of the restoring spring force a passage between the pressure chamber and the at least one opening in the second housing portion, andwherein the connecting pipe piece comprises a second valve seat and a second valve closing piece, wherein, when the double-acting pump is in a position in which the actuating head is lower than the connecting pipe piece, the second valve closing piece assumes its closing position at the second valve seat, and, in an inverted position in which the actuating head is higher than the connecting pipe piece, the second valve closing piece assumes an open position. 2. The double-acting pump according to claim 1, wherein the second valve closing piece is actuatable by its own weight.
이 특허에 인용된 특허 (7)
-
Nozawa Takamitsu (Tokyo JPX) Kishi Takao (Tokyo JPX) Hinokiyama Minoru (Tokyo JPX), Atomizer usable in both normal and inverted orientations.
-
Jager-Waldau Reinhold,DEX, Dispenser for media and method for manufacturing a discharge device or the like.
-
Shimada Shinji,JPX ; Kuwahara Katsuhito,JPX ; Kishi Takao,JPX ; Abe Takayuki,JPX ; Endo Shuzo,JPX ; Kohara Yuji,JPX ; Nozawa Takamitsu,JPX, Liquid jet pump.
-
Fuchs Karl-Heinz (Radolfzell DEX) Ritsche Stefan (Radolfzell DEX), Media dispenser having a variable constriction outlet.
-
Magers Wallace Farnholm (Leawood KS) Hudson Larry Lee (Lee\s Summit MO) Workman James Phillip (Lee\s Summit MO), Pump sprayer.
-
Schwab Egon (Hofheim DEX), Suction and force pump for a container providing for the removal of residual air after filling.
-
Montaner Pedro Pares,ESX ; Quintas Lluis Costa,ESX, Upright/inverted sprayer.
이 특허를 인용한 특허 (4)
-
Maddy, Tim, Apparatus for dispensing fluids using a removable bottle.
-
Ohshima, Yasuo, Content discharge mechanism for pump-type container and pump-type product with content discharge mechanism.
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Lee, Hyeck Hee; Holzer, Frank; Steinfeld, Ute; Mahler, Markus, Metering device.
-
Rampini, Gabriele; Moretti, Matteo, Pump for manually dispensing a fluid substance sealed in a container.
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