Bizarre Patents
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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| Number | Title | Issue Date |
| 7275294 | Magnetic parts holder A parts holding device that includes a holder with a row of spaced-apart cavities, within which parts may be disposed. A bar containing a plurality of spaced-apart permanent magnets is movably mounted to the holder and is disposed parallel to the row of the cavities... | 10/02/2007 |
| 5823861 | Spiral-flow barrel finishing machine This invention relates to a spiral-flow barrel finishing machine having a cylindrical stationary metallic barrel equipped with a lining layer at a lower inside portion. A rotating barrel is equipped with a lining layer on a metallic rotational body and is... | 10/20/1998 |
| 4581854 | Valve grinding apparatus Apparatus for grinding a valve seat of an internal combustion engine using a conventional handheld power drill. A tubular housing provides a shoulder for aligning the tool with the valve and seat during operation. An inner member is concentrically dispose... | 04/15/1986 |
