IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0745429
(2008-10-09)
|
등록번호 |
US-8544610
(2013-10-01)
|
우선권정보 |
DE-20 2007 016788 U (2007-11-29) |
국제출원번호 |
PCT/EP2008/008514
(2008-10-09)
|
§371/§102 date |
20100921
(20100921)
|
국제공개번호 |
WO2009/068135
(2009-06-04)
|
발명자
/ 주소 |
- Paluncic, Zdravko
- Schoenfeld, Andreas
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
The invention relates to a lubricant dispenser having a storage container, an outlet channel, and a pump element disposed between the storage container and outlet channel for conveying lubricant. A piston is sealed in a cylinder and is movable between two positions, of which, in a suction position,
The invention relates to a lubricant dispenser having a storage container, an outlet channel, and a pump element disposed between the storage container and outlet channel for conveying lubricant. A piston is sealed in a cylinder and is movable between two positions, of which, in a suction position, the cylinder is in a flow connection with the storage container. The cross-section area of the piston is smaller than the cross-section area of the storage container. The piston and the cylinder are adapted to one another such that, upon a movement of the piston into the suction position thereof, a negative pressure may be generated in the cylinder as compared to the pressure in the storage container for taking in or letting in lubricant from the storage container into the cylinder, and such that, upon a movement of the piston in the opposite direction out of the suction position in the cylinder, a positive pressure may be generated for conveying the lubricant out of the cylinder into the outlet channel.
대표청구항
▼
1. A lubricant dispenser comprising, a lubricant reservoir, a reservoir outlet, and an outlet channel for delivering lubricant to a dispenser outlet, as well as a pump element for conveying lubricant that is arranged between the reservoir and the outlet channel and features a piston that is sealed a
1. A lubricant dispenser comprising, a lubricant reservoir, a reservoir outlet, and an outlet channel for delivering lubricant to a dispenser outlet, as well as a pump element for conveying lubricant that is arranged between the reservoir and the outlet channel and features a piston that is sealed and guided in a cylinder such that it can be displaced upwardly and downwardly between two positions, with the cylinder being fluidically connected to the reservoir in an intake position, and with a cross-sectional surface of the piston being smaller than a cross-sectional surface of the reservoir, wherein the piston and the cylinder are adapted to one another in such a way that a negative pressure in comparison with the pressure in the reservoir can be generated in the cylinder during an upward movement of the piston toward the reservoir outlet into its intake position in order to draw or admit lubricant from the reservoir into the cylinder, and wherein a positive pressure can be generated in the cylinder during an opposite downward movement of the piston away from the reservoir outlet and out of its intake position in order to convey lubricant from the cylinder into the outlet channel. 2. The lubricant dispenser according to claim 1, characterized by the fact that a check valve is provided between the cylinder and the reservoir and prestressed into its closed position, in which it blocks a flow out of the reservoir. 3. The lubricant dispenser according to claim 2, characterized by the fact that the check valve can be opened by the piston at least in its intake position. 4. The lubricant dispenser according to claim 1, characterized by the fact that a check valve is provided between the cylinder and the outlet channel and can be opened by the positive pressure generated in the cylinder during a movement of the piston out of its intake position. 5. The lubricant dispenser according to claim 1, characterized by the fact that the cylinder features a bypass section, in which the piston is situated in its intake position, wherein the bypass section is realized in such a way that lubricant can flow past the piston from the side of the piston that faces the reservoir to its side that faces the outlet channel in the intake position of the piston. 6. The lubricant dispenser according to claim 1, characterized by the fact that the piston is realized in the form of a thickened section of a piston rod. 7. The lubricant dispenser according to claim 1, characterized by the fact that a stepping motor is assigned to and drives the piston. 8. The lubricant dispenser according to claim 7, characterized by the fact that the stepping motor comprises an axially displaceable drive axle, wherein the stepping motor is arranged in such a way that the direction of displacement of the drive axle extends parallel to and in alignment with the moving direction of the piston. 9. The lubricant dispenser according to claims 6 or 8, characterized by the fact that the drive axle is positively and/or non-positively connected to the piston rod. 10. The lubricant dispenser according to claim 1, characterized by the fact that the lubricant in the reservoir is subjected to pressure by at least one spring element, particularly a spring-loaded pressure piston. 11. The lubricant dispenser according to claim 1, characterized by the fact that the pressure of the lubricant at the dispenser outlet amounts to more than 5 bar, during a movement of the piston out of its intake position. 12. The lubricant dispenser according to claim 11, characterized by the fact that the pressure of the lubricant at the dispenser outlet amounts to more than 10 bar during a movement of the piston out of its intake position. 13. The lubricant dispenser according to claim 11, characterized by the fact that the pressure of the lubricant at the dispenser outlet amounts to more than 50 bar during a movement of the piston out of its intake position. 14. The lubricant dispenser according to claim 1, characterized by the fact that at least one distributing element is provided and can be connected to the outlet channel in order to distribute the lubricant over at least two subconduits, and by the fact that the distributing element features at least one control element for opening and closing at least one of the subconduits, wherein a stepping motor is assigned to and drives the control element. 15. The lubricant dispenser according to claim 14, characterized by the fact that the distributing element features a cylindrical distributing sleeve with circumferentially arranged connection openings for connecting the subconduits, as well as the control element that is realized in the form of a hollow cylindrical sleeve and accommodated in the distributing sleeve in a rotatably supported and sealed fashion, wherein the interior of the hollow control element is fluidically connected to the outlet channel, and wherein distribution bores are circumferentially arranged in the control element in such a way that at least one distribution bore can be connected to at least one of the connection openings in dependence on the relative rotational position of the control element in the distributing sleeve in order to produce a fluidic connection between the outlet channel and one of the subconduits. 16. The lubricant dispenser according to claim 15, characterized by the fact that the distribution bores are arranged relative to the connection openings in such a way that a fluidic connection between a distribution bore and one of the connection openings results in the remaining distribution bores not being fluidically connected to one of the connection openings. 17. The lubricant dispenser according to one of claims 14-16, characterized by the fact that the distributing element is accommodated in a separate housing that can be connected to a housing of the lubricant dispenser that accommodates the reservoir and/or the cylinder with the piston.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.