1. A beverage server with conveniently separable barrel body and base comprises a barrel body (1) and a base (2), characterized in that, an upper connecting plate (3) is disposed at a bottom surface of the barrel body (1); a lower connecting plate (4) is disposed at an upper surface of the base (2); the lower connecting plate (4) and the upper connecting plate (3) are removably connected with each other via a rotary clamping unit (5); the rotary clamping unit (5) comprises a rotary knob (50), an elongated press bar (51) and a rotational axis (52) connecting the rotary knob (50) and the elongated press bar (51); the upper connecting plate (3) and the lower connecting plate (4) are each provided with an elongated through hole (53) for the elongated press bar (51) to pass through; the rotational axis (52) is provided with an upper grip ring (55) and a lower grip ring (56); in between the upper grip ring (55) and the lower grip ring (56), there is a gripping groove (54); the elongated through hole (53) of the upper connecting plate (3) and the elongated through hole (53) of the lower connecting plate (4) are not wider than an outer diameter of the upper grip ring (55) and an outer diameter of the lower grip ring (56) respectively; two sides of the elongated through hole (53) of the lower connecting plate (4) are rotatably gripped in the gripping groove (54); after the elongated press bar (51) passes through the elongated through hole (53) of the upper connecting plate (3), the rotary knob (50) is turned by a certain degree to enable the elongated press bar (51) to press tightly against and coordinate with an upper surface of the upper connecting plate (3).
2. The beverage server with conveniently separable barrel body and base as in claim 1, wherein two press platforms (30) are disposed on the upper surface of the upper connecting plate (3) and the two press platforms (30) are symmetrically and respectively arranged next to two opposite sides of the elongated through hole (53) of the upper connecting plate (3); two vertical blocking panels (31) are provided respectively at rear ends of the two press platforms (30) along a path according to which the elongated press bar (51) follows when the elongated press bar (51) is turned and tightened on the upper surface of the upper connecting plate (3); two position limiting ribs (33) are provided respectively at front ends of the two press platforms (30); two arc-shaped slopes (32) are provided respectively at front sides of the two position limiting ribs (33); a distance between top surfaces of the two press platforms (30) and a top surface of the lower grip ring (56) is slightly longer than a distance between a bottom surface of the elongated press bar (51) and the top surface of the lower grip ring (56).
3. The beverage server with conveniently separable barrel body and base as in claim 2, wherein when viewing the beverage server from top to bottom, a joined centerline of centerlines of the two press platforms (30) is perpendicular to a centerline of the elongated through hole (53) of the upper connecting plate (3).
4. The beverage server with conveniently separable barrel body and base as in claim 3, wherein two short press panels (6) are provided symmetrically and respectively at two sides of the upper grip ring (55); when viewing the beverage server from top to bottom, a joined centerline of centerlines of the two short press panels (6) is perpendicular to a centerline of the elongated press bar (51); two second press platforms (40) are disposed on the lower connecting plate (4) and are symmetrically and respectively arranged next to two opposite sides of the elongated through hole (53) of the lower connecting plate (4); two vertical second blocking panels (41) are provided respectively at rear ends of the two second press platforms (40) along a path opposite to the path according to which the elongated press bar (51) follows when the elongated press bar (51) is turned and tightened; two second position limiting ribs (43) are provided respectively at front ends of the two second press platforms (40); two second arc-shaped slopes (42) are provided respectively at front sides of the two second position limiting ribs (43); a distance between top surfaces of the two second press platforms (40) and the top surface of the lower grip ring (56) is slightly longer than a distance between bottom surfaces of the short press panels (6) and the top surface of the lower grip ring (56); when viewing the beverage server from top to bottom, a joined centerline of centerlines of the two second press platforms (40) is perpendicular to a centerline of the elongated through hole (53) of the lower connecting plate (4).
5. The beverage server with conveniently separable barrel body and base as in claim 1, wherein the outer diameter of the upper grip ring (55) is smaller than the outer diameter of the lower grip ring (56); the upper grip ring (55) has a conical shape with a top side of the upper grip ring (55) narrower than a bottom side of the upper grip ring (55).
6. The beverage server with conveniently separable barrel body and base as in claim 1, wherein plurality of positioning blocks (34) are provided at periphery of a bottom surface of the upper connecting plate (3); plurality of positioning recesses (44) corresponding to the positioning blocks (34) are provided at periphery of an upper surface of the lower connecting plate (4).
7. The beverage server with conveniently separable barrel body and base as in claim 1, wherein plurality of second positioning blocks (45) are provided at periphery of a bottom surface of the lower connecting plate (4); plurality of second positioning recesses (20) corresponding to the second positioning blocks (45) are provided at periphery of the upper surface of the base (2).
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A bi-stable valve, comprising:
a first chamber having a first aperture and a second aperture;
a second chamber having a first aperture and a second aperture; and
a shaft having a first valve member adjacent a first end of said shaft and a second valve member adjacent an opposite second end of said shaft, said shaft movable between a first position, in which said first valve member closes off said second aperture of said first chamber and said second valve member closes off said second aperture of said second chamber to prevent fluid from passing through the second apertures of said first and second chambers, and a second position, in which said first valve member and said second valve member allow fluid to pass through said second aperture of said first chamber and said second aperture of said second chamber.
2. The bi-stable valve of claim 1, further comprising an inlet conduit in fluid communication with said first aperture of said first chamber and said first aperture of said second chamber.
3. The bi-stable valve of claim 1, further comprising,
a third chamber having a first aperture and a second aperture, said first aperture in fluid communication with said second aperture of said first chamber; and
a fourth chamber having a first aperture, a second aperture and a third aperture, said first aperture of said fourth chamber in fluid communication with said second aperture of said second chamber.
4. The bi-stable valve of claim 3, further comprising, an exhaust conduit in fluid communication with said second aperture of said third chamber and said second aperture of said fourth chamber.
5. The bi-stable valve of claim 4, further comprising a pad conduit in fluid communication with the third aperture of the fourth chamber.
6. The bi-stable valve of claim 5, wherein in said second position, said first chamber, said second chamber, said third chamber and said fourth chamber are fluidly coupled.
7. The bi-stable valve of claim 5, wherein in said first position, said first chamber and said second chamber are fluidly isolated from said third chamber and said fourth chamber.
8. The bi-stable valve of claim 5, wherein in said first position, said pad conduit and said exhaust conduit are fluidly coupled.
9. The bi-stable valve of claim 1, wherein said second aperture of said first chamber has a diameter different from a diameter of said second aperture of said second chamber.
10. The bi-stable valve of claim 9, wherein said diameter of said second aperture of said first chamber is greater than said diameter of said second aperture of said second chamber.
11. The bi-stable valve of claim 3, wherein said shaft extends into said third chamber in said second position.
12. The bi-stable valve of claim 3, wherein an external restrictor restricts said shaft from extending into said fourth chamber.
13. A down hole tool control system, comprising:
a plurality of bi-stable valves, each of said valves comprising,
a first chamber having a first aperture and a second aperture;
a second chamber having a first aperture and a second aperture; and
a shaft having a first valve member adjacent a first end of said shaft and a second valve member adjacent an opposite second end of said shaft, said shaft movable between a first position, in which said first valve member closes off said second aperture of said first chamber and said second valve member closes off said second aperture of said second chamber to prevent fluid from passing through the second apertures of said first and second chambers, and a second position, in which said first valve member and said second valve member allow fluid to pass through said second aperture of said first chamber and said second aperture of said second chamber.
14. The system of claim 13, further comprising a common inlet conduit in fluid communication with said first aperture of said first chamber and said first aperture of said second chamber of each of said bi-stable valves.
15. The system of claim 14, wherein each of the plurality of bi-stable valves further comprise,
a third chamber having a first aperture and a second aperture, said first aperture in fluid communication with said second aperture of said first chamber; and
a fourth chamber having a first aperture, a second aperture and a third aperture, said first aperture of said fourth chamber in fluid communication with said second aperture of said second chamber.
16. The system of claim 15, further comprising a plurality of exhaust conduits, each exhaust conduit in fluid communication with a respective one of said plurality of bi-stable valves to provide separate exhausts for each of said plurality of bi-stable valves.
17. The system of claim 13, said shaft of each of said plurality of bi-stable valves is individually controllable to move between said first position and said second position.
18. The system of claim 15, further comprising a plurality of pad conduits, each pad conduit in fluid communication with a respective one of said plurality of bi-stable valves to separately control a plurality of pads.
19. A down-hole bi-stable valve, comprising:
a first state in which an exhaust port and a pad port are exposed to a first pressure and an inlet port is exposed to a second pressure greater than the first pressure, and
a second state in which said exhaust port, said pad port and said inlet port are exposed to said second pressure.
20. The down-hole bi-stable valve of claim 19, wherein said valve is pressure balanced in said first state and said second state.