Universal rectangular base bulb adapter for providing external electrical connection between powered vehicles and trailers
US5506465A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1994 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Oct 7, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/305
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved adapter bulb is provided for inserting within a rectangular base tail light socket of a powered vehicle for providing external electrical connection to a trailer lighting system. The adapter bulb includes a base member adapted to be disposed within a rectangular base tail light socket. The base member terminates in a rectangular contact portion having four electrical leads disposed substantially at each corner thereof thereby forming two pairs of substantially diagonally opposed electrical leads. A bulb is secured within the base member, and includes two filaments. Each filament is connected to one pair of the two pairs of substantially diagonally opposed electrical leads, that is, in a criss-cross relationship. Four wire leads are respectively joined, at one end, to one of the electrical leads, and at the other end to a diode. Two connectors for communicating with the trailer lighting system are each respectively joined to two of the four diodes, thereby defining two pairs of wire leads. Each pair of wire leads is connected to the same pair of electrical leads as one of said filaments. In another aspect of the invention, the four wire leads each connected to one of the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.