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 |
| 4051954 | Coupler butt end replacement method and part The following specification describes a replacement method and part for a coupler butt end in which the coupler is severed at the narrow hollow perimeter wall of the coupler shank close to the solid worn butt end portion. A cast replacement butt end part ... | 10/04/1977 |
