One-way valve, valve unit assembly, and ink cartridge using the same
First Claim
1. A one-way valve unit assembly comprising:
- a bottom cover with a through hole for holding a valve;
a pressing cover with a through hole; and
an elastic valve disposed between the bottom cover and the pressing cover, the elastic valve includinga foot support portion, sealing an interior wall of the bottom cover;
a wall support portion, protruding from an interior wall of the foot support portion;
a shoulder support portion, bending toward an interior of said wall support portion; and
a head support portion with a through hole, protruding from said shoulder support portion;
wherein, the pressing cover is maintained selectively in contact with said head support portion through hole of said elastic valve by a pressure difference wherein,a circumference side is at the downside of the foot support portion of the valve;
said foot support portion of the valve is provided with a curved part;
said bottom cover is composed of a cylindrical wall, a plane portion, and a circumferential wall protruded from the inner surface portion of the through hole of said bottom cover;
said pressing cover includes a top cover and a cylindrical wall, there is a valve plane in the middle of the top cover for connecting with the head support portion of said valve, and the through hole of the pressing cover is provided in the non-valve plane region andsaid curved part of said valve is disposed between said circumferential wall of said bottom cover and the end of said vertical wall of said pressing cover.
1 Assignment
0 Petitions
Accused Products
Abstract
A one-way valve, a valve unit assembly and ink cartridge using this valve or valve unit assembly for controlling ink flow are disclosed. The one-way valve includes a foot support portion, a wall support portion projecting at an angle from an interior side of the foot support portion, a shoulder support portion bending towards an interior side of the wall support portion, and a head support portion projecting from a shoulder support portion with a through hole. The valve unit assembly includes a bottom cover with a through hole for holding the one-way valve, a pressing cover with a through hole, and an elastic one-way valve disposed between the bottom cover and the pressing cover. The pressing cover is maintained selectively in contact with the head support portion through hole by a pressure difference. The one-way valve and the valve unit assembly are disposed in an ink chamber to replace a porous member usually used in the ink chamber. As a result, the ink cartridge using the one-way valve can store more ink and remaining ink is handled in a more environment friendly manner.
75 Citations
16 Claims
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1. A one-way valve unit assembly comprising:
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a bottom cover with a through hole for holding a valve; a pressing cover with a through hole; and an elastic valve disposed between the bottom cover and the pressing cover, the elastic valve including a foot support portion, sealing an interior wall of the bottom cover; a wall support portion, protruding from an interior wall of the foot support portion; a shoulder support portion, bending toward an interior of said wall support portion; and a head support portion with a through hole, protruding from said shoulder support portion; wherein, the pressing cover is maintained selectively in contact with said head support portion through hole of said elastic valve by a pressure difference wherein, a circumference side is at the downside of the foot support portion of the valve;
said foot support portion of the valve is provided with a curved part;said bottom cover is composed of a cylindrical wall, a plane portion, and a circumferential wall protruded from the inner surface portion of the through hole of said bottom cover; said pressing cover includes a top cover and a cylindrical wall, there is a valve plane in the middle of the top cover for connecting with the head support portion of said valve, and the through hole of the pressing cover is provided in the non-valve plane region and said curved part of said valve is disposed between said circumferential wall of said bottom cover and the end of said vertical wall of said pressing cover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification