Fluid switch

Details Fluid switch Fluid switch

1997-06-27

2000-11-14

Smith, Lynette R. F.

Plant husbandry

Coated or impregnated seed, method or apparatus

47 581, 209 74, 209155, 209509, 406 10, 406 34, A01H 100, B03B 528, B65G 5108

Patent

active

061452475

ABSTRACT:
The present invention provides apparatus and methods useful, for example, for introducing a desired spacing between or classifying and sorting objects, e.g. plant embryos. Objects carried serially in a fluid stream enter the apparatus via an upstream conduit. A sensor associated with the conduit provides information regarding an object at a particular location in the upstream conduit and produces a signal. A switch coupled to the upstream conduit directs the fluid stream to an appropriate downstream conduit by applying a force to a conduit, e.g., by aligning the upstream conduit with a downstream conduit to create a fluid-tight path. Apparatus according to the present invention are particularly useful for manipulating fragile multicellular biological objects such as plant embryos.

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