U.S. patents available from 1976 to present.
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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 89/37.07 - Trunnion


Subclass of Class 89 - Ordnance
Definition: Devices wherein one or two pivots supports the ordnance
No. of patents: 42
Last issue date: 12/01/2009


  2  
NumberTitleIssue Date
4149448Automatic gun mounting system
An automatic gun mounting system, comprises a weapon support having respective end portions with respective first and second angularly spaced bearing bushings. A gun which has a recoiling barrel, particularly for armored wheeled half track or full track m...
04/17/1979
4108045Weapon mounting arrangement
A cardanically suspended movable turret having a tubular weapon mounted therein so that the bore axis of the barrel of the weapon intersects the vertical rotational axis of the turret and lies in between the elevation axis of the turret suspension and the...
08/22/1978
  2  
 
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