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2. Seat belt laws in the United States - Wikipedia

   en.wikipedia.org/wiki/Seat_belt_laws_in_the...

   Most seat belt laws in the United States are left to state law. However, the recommended age for a child to sit in the front passenger seat is 13. The first seat belt law was a federal law, Title 49 of the United States Code, Chapter 301, Motor Safety Standard, which took effect on January 1, 1968, that required all vehicles (except buses) to be fitted with seat belts in all designated seating ...

3. Automobile auxiliary power outlet - Wikipedia

   en.wikipedia.org/wiki/Automobile_auxiliary_power...

   Products covered by the standard include cord assemblies of a plug that mates with the standard cigarette receptacle found in automobiles. 6-volt cigarette lighter receptacle and plug. Receptacle inside diameter: 21.34–21.46 mm (median 21.4 mm) Plug body diameter: 21.08–21.23 mm (median 21.155 mm) 12-volt cigarette lighter receptacle and ...

4. Seat belt - Wikipedia

   en.wikipedia.org/wiki/Seat_belt

   The first car model to have the three-point seat belt as a standard item was the 1959 Volvo 122, first outfitted with a two-point belt at initial delivery in 1958, replaced with the three-point seat belt the following year. [35]

5. EmPower (aircraft power adapter) - Wikipedia

   en.wikipedia.org/wiki/EmPower_(aircraft_power...

   EmPower plug. Some airlines offer it only in business class or only in certain types of aircraft or flights. Travelers in the 2000s bought EmPower adapters, frequently from duty-free shops at airports, to run laptops and other electronic equipment without using battery power. Supporting airlines include: Some Air France planes; Some Air India ...

6. U.S. Military connector specifications - Wikipedia

   en.wikipedia.org/wiki/U.S._Military_connector...

   A MIL-DTL-38999 circular connector plated with a nickel–teflon composite. Left: plug (male) type connector; Right: receptacle (female) type connector) Electrical or fiber-optic connectors used by U.S. Department of Defense were originally developed in the 1930s for severe aeronautical and tactical service applications, and the Type "AN" series set the standard for modern military circular ...

7. Railway coupling - Wikipedia

   en.wikipedia.org/wiki/Railway_coupling

   The coupler could be adapted to be compatible with the Johnston coupler by replacing the drawhook with a U-shaped adapter link, which was attached using the same drawhook pin. [ 7 ] Bell-and-hook couplers began to be replaced on the Avontuur Railway upon the introduction of Class 91-000 diesel-electric locomotives on the narrow gauge system in ...

8. SAE J1772 - Wikipedia

   en.wikipedia.org/wiki/SAE_J1772

   SAE J1772, also known as a J plug or Type 1 connector after its international standard, IEC 62196 Type 1, is a North American standard for electrical connectors for electric vehicles maintained by SAE International under the formal title "SAE Surface Vehicle Recommended Practice J1772, SAE Electric Vehicle Conductive Charge Coupler".

9. Three-prong adaptor - Wikipedia

   en.wikipedia.org/wiki/Three-prong_adaptor

   There are several alternatives for connecting newer appliances to two-prong receptacles without rewiring the building: removing the grounding pin of the plug (unsafe), replacing the receptacle with a three-prong outlet (unsafe without proper ground), or replacing the receptacle with a Ground Fault Circuit Interrupter (GFCI).