B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/200, 101/96
B23P 15/00 (2006.01) B41J 2/16 (2006.01) C23F 1/04 (2006.01)
Patent
CA 1176437
PRO. 80-508 15 ABSTRACT: A method of manufacturing a jet nozzle plate utilizes a base plate in which a bore having a diameter which is larger than the inner diameter of the ultimate jet nozzle is provided in order to form a jet nozzle, after which on the front thereof a recess is milled which concentrically surrounds the bore at a distance. Subse- quently, the base plate is covered as a unit, as far as into the bore, with a layer of a chemically depositable material, whose thickness defines the inner diameter of the bore to the inner diameter of the ultimate jet nozzle. Subsequently, the front of the plate is ground down as far as the layer in the recess and is etched, the material of the base plate exposed by grinding then being removed until the layer projecting from the bore forms a freely project- ing cylindrical tube which is surrounded by a trough.
389479
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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