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 |
| 8090460 | System and method for protection system design support A method and system for examining, auditing, and safely evaluating process systems, including fluid pressure systems, to aid overpressure design and/or sizing of overpressure equipment. The system includes a server subsystem, a storage subsystem, an assessment subsy... | 01/03/2012 |
| 7904190 | System and method for protection system design support A method and system for assessing, auditing, designing, and evaluating process systems, including fluid pressure systems, to aid overpressure process plant design and/or the proper sizing and selection of overpressure equipment. The system includes a server subsyste... | 03/08/2011 |
| 7617013 | System and method for protection system design support A method and system for examining and safely evaluating process systems, including fluid pressure systems, to aid overpressure design and/or sizing of overpressure equipment. The system includes a server subsystem, a storage subsystem, an assessment subsystem, and o... | 11/10/2009 |