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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 307/403 - Thin film parametrons


Subclass of Class 307 - Electrical transmission or interconnection systems
Definition: Subject matter wherein the parametron is composed of thin
No. of patents: 1
Last issue date: 06/13/2006


NumberTitleIssue Date
7061356Controllable transformer
A controllable transformer device comprising a body of a magnetic material, a primary winding wound round the body about a first axis, a secondary winding wound round the body about a second axis at right angles to the first axis, and a control winding wound round t... 		06/13/2006
 
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