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.
Gravity and a depending finger are utilized to stage electronic components on an as-needed basis for the population or assembly of circuit boards.
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
79% of the total text.
Page 1 of 2
Staging Apparatus For Circuit Board Population
Gravity and a depending finger are utilized to stage electronic components
on an as-needed basis for the population or assembly of circuit boards.
Presently available population apparatus is generally structured to receive
horizontally oriented components staged in a single row. The components are
often shipped to circuit board assemblers in two row packs. Elaborate and
expensive apparatus is required to feed the components directly out of the pack
on an as-needed basis, and binding is often a problem. Manual combining and
orientation operations are an alternative, but they are time consuming.
Upon unloading the two row pack directly into a vertical
dispenser 1, both rows 2 and 3 of components are automatically
combined into one row. Dispenser 1 has channels 4 and 5 and a
funnel 6. At the top of funnel 6 is a gate 7 which is maintained
in the position shown as long as components are present in channel 4.
When channel 4 is empty, the weight of the components in channel 5
will cause gate 7 to rotate in a clockwise direction about pivot 8 to
open row 2 to funnel 6.
The components emerge edgewise from dispenser 1 through a throat 9 for
translation to the left by a plunger 10. Plunger 10 is structured to oscillate, and
has a notch 11 for accepting a component emerging from throat 9. Upon
oscillation of plunger 10, each of the components emerging from throat 9 is
translated along table 12. Each component translated along t...