Device for dispensing fluid that includes a valve which communic

Details Device for dispensing fluid that includes a valve which communic Device for dispensing fluid that includes a valve which communic

1992-01-08

1993-01-05

Nilson, Robert G.

Pumps

Expansible chamber type

Distributor formed from integral portion of flexible wall...

222207, 222494, F16K 1514

Patent

active

051765101

ABSTRACT:
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.

REFERENCES:
patent: 3931831 (1976-01-01), French
patent: 4101057 (1978-07-01), Lomaglio

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