Title: Multiple dies for ribbon

Abstract: The invention is an improvement in apparatus for growing crystalline bodies from the melt. The apparatus comprises a crucible and a novel die assembly in which the die assembly is made in two parts and essentially comprises inner and outer concentric members. The inner and outer members are spaced from one another to define an annular lower capillary section. One member is longer than the other and is shaped so that its upper end overhangs and engages the upper end of the other member. A plurality of upstanding dies are formed in the upper end of the longer member. Each of the dies has a top end surface and is slotted in a generally radial direction with the slots being deep enough to intersect the annular space between the two members. The slots in the dies serve as capillaries to provide communication between the lower capillary section and the top end surfaces of the dies.

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Inventors: LaBelle, Jr., Harold E. (Hanover, MA, US)
Cronan, Charles J. (Taunton, MA, US)

Application Number: 731948
Filing Date: 1976-10-12
Publication_date: 1977-06-07
Assignee: Tyco Laboratories, Inc. (Waltham, MA)
Primary Class(es): 117/210 117/932, 117/945, 117/946, 117/948, 117/949, 117/950, 164/337, 164/361, 249/107
Other Classes:
US Patent Ref:

3241925	Mar, 1966	Van Cakenberghe	23/273.
3245112	Apr, 1966	Williamson	425/464.
3687633	Aug, 1972	LaBell, Jr. et al.	23/273.
3953174	Apr, 1976	LaBell, Jr.	23/273.

Other Refs:
Primary Examiner: Bascomb, Jr., Wilbur L.
Assistant Examiner: Hollander, Barry I.
Attorney: Schiller & Pandiscio