![]() ![]() ![]() H01R4/58- Electrically-conductive connections between two or more conductive members in direct contact, i.e.touching one another Means for effecting or maintaining such contact Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation ![]() H01R4/00- Electrically-conductive connections between two or more conductive members in direct contact, i.e.H01R- ELECTRICALLY-CONDUCTIVE CONNECTIONS STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS COUPLING DEVICES CURRENT COLLECTORS.238000006011 modification reaction Methods 0.000 description 2.206010042255 Struck by lightning Diseases 0.000 description 4.238000004642 transportation engineering Methods 0.000 abstract 2.XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16.239000004020 conductor Substances 0.000 abstract description 58.239000000463 material Substances 0.000 claims description 8.239000011810 insulating material Substances 0.000 claims description 28.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority claimed from US77041977A external-priority Application filed by Drulard Norman R filed Critical Drulard Norman R Priority to US05/946,729 priority Critical patent/US4447847A/en Application granted granted Critical Publication of US4447847A publication Critical patent/US4447847A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Drulard Original Assignee Drulard Norman R Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/946,729 Inventor Norman R. Rinse excess sand with running water.- Google Patents US4447847A - Portable lightning rodÄownload PDF Info Publication number US4447847A US4447847A US05/946,729 US94672978A US4447847A US 4447847 A US4447847 A US 4447847A US 94672978 A US94672978 A US 94672978A US 4447847 A US4447847 A US 4447847A Authority US United States Prior art keywords lightning sheath lightning rod upper electrode electrically conductive Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Fulgurites are fragile, so dig around it to expose it before removing it from the surrounding sand. Use care when checking for a fulgurite so that you don't burn yourself. The rod and sand will be extremely hot after a lightning strike.When lightning approaches, be far away from your fulgurite project! Do not check on whether you make a fulgurite until several hours after the storm has passed.Choose an area far from people, animals or structures. There is no guarantee lightning will strike your lightning rod, but you improve your chances if you select an open area where the metal is higher than the surroundings. You can set up colored sand or some granular mineral besides quartz sand if you prefer. Drive a lightning rod or length of rebar into the sand about 12 inches to 18 inches and extending up into the air.You must complete preparation for a fulgurite several hours (or longer) before the storm arrives. Radar is good or refers to special maps for your area that record lightning strikes. Check the weather forecast to find out when lightning activity is expected. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |