Device for separating hard objects, such as stones, from a stream of wood
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United States of America Patent
Stats
-
Jan 21, 1992
Issued Date -
N/A
app pub date -
Sep 10, 1990
filing date -
Feb 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device is disclosed for separating hard objects, such as stones, from a stream of wood in an apparatus for conveying or manipulating logs or blocks of wood including a conveyor section. The device includes a transducer disposed in a location suited for the detection of vibration. The transducer registers acoustic vibrations and is connected to a control unit by means of which hard objects conveyed along with the wood stream can be detected on the basis of the vibration signals they generate. The control unit is also used to control an exit gear incorporated in the conveyor section, so that hard objects which are detected will fall down from the stream of wood passing through the apparatus. The invention eliminates the need to build water-operated stone catchers as conventionally used for the removal of stones.
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Family
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- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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