Fluent material handling – with receiver or receiver coacting mea – With means to move supply means and/or receiver to – from or... – With movement of receiver in horizontal plane
Reexamination Certificate
2000-03-27
2001-09-25
Douglas, Steven O. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
With means to move supply means and/or receiver to, from or...
With movement of receiver in horizontal plane
C141S284000, C141S250000
Reexamination Certificate
active
06293317
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention concerns a method and a device for the application of a liquid substance onto an object, for example for the application of flux to the bumps of a semiconductor chip.
It is known, to provide a flat baseplate with a flux layer whereby the layer is applied by means of blades. With this process, a relatively large portion of the flux is lost.
The object of the invention is to improve the application of a liquid substance onto an object.
BRIEF DESCRIPTION OF THE INVENTION
The invention consists in using a device comprising a baseplate, in which at least one cavity is recessed, and a container, wherein in operation the container and the baseplate are moved relative to each other in such a way that during the relative movement the container passes from one side of the cavity to the other side of the cavity. This relative movement prohibits the generation of indentations in the surface of the flux. Furthermore no flux gets lost.
The invention is explained in detail below based on the drawing figures.
REFERENCES:
patent: 4139613 (1979-02-01), Hefele
patent: 4678015 (1987-07-01), Raque et al.
patent: 4733594 (1988-03-01), Bajohr
patent: 5565033 (1996-10-01), Gaynes et al.
Bürgi Urs
Christen Otto
Schlunegger Michael
Douglas Steven O.
ESEC Trading SA
McCormick Paulding & Huber LLP
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