The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
A ribbon crystal growth apparatus technique produces ribbon crystals of infinite length through a continuous growth process with non-contact cutting of the crystals into lengths during the growth process.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
97% of the total text.
Page 1 of 2
Device for Continuous Pulling and Cutting of Ribbon Crystals
A ribbon crystal growth apparatus technique produces ribbon crystals of
infinite length through a continuous growth process with non-contact cutting of
the crystals into lengths during the growth process.
Crystal ribbon 1 (Fig. 1) is pulled from the mouth of die 2 which is immersed
in melt 3 of the ribbon material contained in heated vessel 4. Means (not shown)
are provided to continuously replenish melt 3. Pulling mechanism 5 includes
transport belt 6 which contacts ribbon 1 and is driven by transport wheel 7 to
upwardly advance ribbon 1. Water-cooled rollers 8 and 9 are held by springs 10
and 11 against ribbon 1 to urge ribbon 1 into contact with belt 6. Belt 6 is cooled
by water-cooled plate 12. Alternatively, rollers 8 and 9 can be replaced by a
second transport belt mechanism.
Contactless cutter mechanism 13 includes argon-floated chambers 14
including a preheater section 15 (Fig. 2) where the ribbon is heated in a narrow
band where it is to be cut with a suitable means, for example, ohmic heater, RF
coils or a hydrogen-oxygen torch. The ribbon is then cut with flame 16 from
H(2)/0(2) torch 17. Afterheater 18 is provided to anneal the cut portions of the
ribbon to avoid stresses and breakage.
The cut portions are removed to a storage means (not shown) by rollers 19
Other means, such as a heating coil, an RF coil or a laser, can be used for
cutting and annealing.