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US 5,099,885 AGranted
Valve for dispensing a fluid
AssigneeSterisol AB
InventorBilly Nilsson
Life of this patent
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AssigneeSterisol AB
InventorBilly Nilsson
Estimating the term…
A valve for dispensing a preferably viscous fluid is adapted in connection with the dispensing operation to open under the action of a positive pressure in the fluid, produced e.g. by means of a pump (1), and to close by itself when the positive pressure, and thus the dispensing operation, has ceased. The valve (2) has a channel (9) with an inlet and an outlet end (9a; 9b) and an axial direction of fluid flow (10). The channel (9) is defined by a body portion (11) of rigid material and a cover portion (12) of flexible material. The body portion (11) is formed with a groove (13) of substantially arcuate cross-section. The edges of the cover portion (12) extending in the direction of flow (10) are sealingly connected to the body portion (11). Towards the outlet end (9b), the cover portion conforms to the shape of the groove (13). The cover portion (12) is prestressed to sealingly engage the wall of the groove (13) with a certain engagement pressure.
Valve for dispensing a fluid, said valve being adapted in connection with the dispensing operation to open under the action of a positive pressure in the fluid and to close by itself when said positive pressure has ceased, wherein said valve comprises a channel with an inlet and an outlet end and an axial direction of fluid flow, the channel being defined by a body portion of rigid material formed with a groove of substantially arcuate cross-section and by a cover portion of flexible material whose side edges extending in the direction of flow are sealingly connected to the body portion and gradually conform towards the outlet end to the shape of the groove, said flexible cover portion being prestressed to sealingly engage the wall of the groove with a certain engagement pressure in a region at the outlet end of the channel, said cover portion having an increasing thickness towards the side edges as seen in a section transverse to the direction of fluid flow.
Dependencies are inferred from the claim text.