IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0925272
(2004-08-24)
|
우선권정보 |
IT-FI2003A0241(2003-09-15) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
5 |
초록
▼
Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89) sliding within a relevant chamber (80) provided wit
Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89) sliding within a relevant chamber (80) provided with one or more ports (83, 84) for connection with said reservoir (88), said piston being so shaped as to close/open said ports (83, 84) upon its displacement along said chamber (80), the apparatus being characterized in that the idle stroke of the piston (89) inside the said chamber (80) is adjustable by a rotation of the same piston (89) about its longitudinal axis.
대표청구항
▼
The invention claimed is: 1. Apparatus for controlling brakes in bicycles, to be used, in particular, for disc brakes mounted on bicycles, with a pump connected with a relevant reservoir for the fluid of the hydraulic circuit, and comprising a piston sliding within a relevant chamber provided with
The invention claimed is: 1. Apparatus for controlling brakes in bicycles, to be used, in particular, for disc brakes mounted on bicycles, with a pump connected with a relevant reservoir for the fluid of the hydraulic circuit, and comprising a piston sliding within a relevant chamber provided with a plurality of ports for connection with said reservoir, said piston being so shaped as to close/open said ports upon its displacement along said chamber, the apparatus being characterized in that the idle stroke of the piston inside said chamber is adjustable by a rotation of the same piston about its longitudinal axis and in which the piston is provided with a gasket able to close said ports upon the stroke of the piston along said chamber, the apparatus being characterized in that said gasket has a circumferential development with differentiated height so as to offer, in correspondence of a rotation of the piston about its longitudinal axis, a different front of interaction with said ports. 2. Apparatus according to claim 1, characterized in that said piston is provided with an operable knob allowing the rotation of the piston relative to the chamber. 3. Apparatus according to claim 1, characterized in that said piston is connected with a lever for the actuation of the pump via a connecting rod having spherical head. 4. Apparatus according to claim 1, characterized in that the reservoir is disposed inside a containment body and exhibits a concave portion complementarily shaped with respect to a portion of the handlebar. 5. Apparatus according to claim 4, characterized in that said concave portion consists of a lid of reservoir. 6. Apparatus according to claim 4, characterized in that said containment body comprises a semicollar having a concavity of a conformation suited for complementarily matching the handlebar on the side opposite to said body. 7. An apparatus according to claim 1, wherein: said plurality of ports are reservoir ports arranged at a first end of said chamber; a containment body defines said reservoir, said reservoir ports and said chamber, said containment body also defines an outlet port at a second end of said chamber. 8. An apparatus according to claim 7, wherein said outlet port is arranged with said chamber to always be in communication with a portion of said chamber when said piston is spaced from said second end of said chamber; said reservoir ports are in communication with said portion of said chamber when said piston is arranged at said first end of said chamber. 9. Apparatus for controlling brakes in bicycles, to be used, in particular, for disc brakes mounted on bicycles, with a pump connected with a relevant reservoir for the fluid of the hydraulic circuit, and comprising a piston sliding within a relevant chamber provided with one or more ports for connection with said reservoir, said piston being so shaped as to close/open said ports upon its displacement along said chamber, the apparatus being characterized in that the idle stroke of the piston inside said chamber is adjustable by a rotation of the same piston about its longitudinal axis; said reservoir is disposed inside a containment body and exhibits a concave portion complementarily shaped with respect to a portion of the handlebar; said concave portion includes a lid of said reservoir. 10. A hydraulic master cylinder arrangement comprising: a body defining a reservoir for fluid and defining a cylinder, said body defining a reservoir port arranged at a first end of said cylinder and forming a fluid passage between said reservoir and said cylinder, said body defining an outlet port at a second end of said cylinder; a piston movably mounted in said cylinder between said first and second end of said cylinder, said piston also being rotatable in said cylinder about a longitudinal axis of said cylinder; a gasket mounted on said piston and creating a seal between said piston and said cylinder, said gasket extending in an axial direction of said cylinder, an axial length of said gasket varying along an outer circumference of said gasket, said gasket, said reservoir port and said piston being arranged to have said gasket close said reservoir port to a portion of said cylinder when said piston is spaced from said first end of said cylinder. 11. An arrangement in accordance with claim 10, wherein: said gasket, said reservoir port and said piston are arranged to have rotation of said piston with said gasket vary an axial position of said piston that closes said reservoir port. 12. An arrangement in accordance with claim 10, wherein: said outlet port is arranged with said cylinder to always be in communication with said portion of said cylinder when said piston is spaced from said second end of said cylinder; said reservoir port is in communication with said portion of said cylinder when said piston is arranged at said first end of said cylinder. 13. An arrangement in accordance with claim 10, wherein: said piston is provided with an operable knob for rotation of said piston relative to said cylinder. 14. An arrangement in accordance with claim 10, further comprising: a lever pivotally connected to said body, said lever having a first end connected to said piston and a second end for actuation by a user. 15. An arrangement in accordance with claim 10, wherein: said body defines another reservoir port arranged at said first end of said cylinder and axially spaced from said reservoir port, said another reservoir port forming another fluid passage between said reservoir and said cylinder. 16. An arrangement in accordance with claim 10, wherein: said gasket, said reservoir port and said piston are arranged to have rotation of said piston with said gasket vary an axial position of said piston that closes said reservoir port; said outlet port is arranged with said cylinder to always be in communication with said portion of said cylinder when said piston is spaced from said second end of said cylinder; said reservoir port is in communication with said portion of said cylinder when said piston is arranged at said first end of said cylinder; said piston is provided with an operable knob for rotation of said piston relative to said cylinder a lever is pivotally connected to said body, said lever having a first end connected to said piston and a second end for actuation by a user; said body defines another reservoir port arranged at said first end of said cylinder and axially spaced from said reservoir port, said another reservoir port forming another fluid passage between said reservoir and said cylinder.
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