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Patent No. 6368227

Method of swinging on a swing

A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.

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Class 209/265 - Imperforate sections


Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Sifting devices associated with an imperforate surface or
No. of patents: 2
Last issue date: 11/18/2008


NumberTitleIssue Date
7451880Debris removal from fluidized sand bed
Apparatus for removing debris from a fluidized sand bed. One or more troughs extend radially from a vertical shaft. Associated with each trough is a perforated chute. The apparatus is placed into the fluidized bed of sand, and rotated. As the apparatus rotates, the ...
11/18/2008
5732826Conveyor for liquid media with production residues
A conveyor is provided for liquid media, such as cooling-lubricating liquids containing production residues, such as machinery chips. The conveyance takes place along a gutter via a driven scraper conveyor extending into it and extending along its linear ...
03/31/1998
 
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