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| Number | Title | Issue Date |
| 8179142 | Trailer signal converter A signal converter and method of converting a signal are provided. The converter includes a power supply, microcontroller and current sensor. The microcontroller is connected to a power supply and is configured to receive inputs from a vehicle and output signals to ... | 05/15/2012 |
| 7417437 | Vehicle battery testing assembly A portable assembly includes a multi-level housing having a vertically oriented back wall and an elongated rectilinear axle conjoined thereto. The housing further includes an elongated handle having a lower end portion monolithically formed with the back wall. A plu... | 08/26/2008 |
| 7403100 | Detection of trailer presence and type by means of current detection Method and device for detecting the presence and type of trailer which may have been connected to a vehicle including arrangements for applying a first voltage to a first amount of power lines for a first sub system in the trailer and arrangements for measuring the ... | 07/22/2008 |
| 7345579 | Trailer illumination system test drive and method of use A trailer illumination system test device and method of use are disclosed. In one form, a device for testing the functionality of a trailer lighting system is disclosed. The device includes an in-series connection port operable to receive a trailer lighting system p... | 03/18/2008 |
| 7339465 | Vehicle-to-trailer light connection verification tester A vehicle-to-trailer light-connection verification tester (10) designed to be located within a towing vehicle (20), a towed trailer (30) or within a cable adapter (24) that is connected between the vehicle (20) and the trailer (... | 03/04/2008 |
| 7336082 | Vehicle circuit tester A vehicle circuit tester for electrically testing the circuit system of a trailer. The tester can connect to a variety of types of trailers for the purpose of analyzing or monitoring the trailer's circuit system. The tester includes indicators that indicate continui... | 02/26/2008 |
| 7234944 | Patch field documentation and revision systems A communication network device and corresponding patch field system are disclosed. The device includes a port module, ports, and an appliqué attached to a face of the port module. The appliqué includes a printed circuit board (PCB) with conductive pads. A patch co... | 06/26/2007 |
| 7184899 | Energizable electrical test device for measuring current and resistance of an electrical circuit Provided is an electrical test device having multi-meter functionality and being adapted to provide current sourcing to an electrical system for selective measurement of a plurality of parameters. The electrical test device comprises a conductor probe element, a pow... | 02/27/2007 |
| 7148698 | Fuse saving tester for fused circuit In one form, tester for an electrical system, such as for a vehicle, develops repetitively applied, short duration, control current pulses for reducing load current pulses through the electrical system. An operator connects a pair of input contacts across a fuse hol... | 12/12/2006 |
| 7132935 | Single person vehicle light test Methods and apparatus are provided whereby a single person can test exterior lights of a vehicle. The apparatus comprises a controller coupled to the lights for turning light groups ON and OFF in a predetermined sequence in response to a START TEST signal and vehicl... | 11/07/2006 |
| 7124003 | Diagnostics device for testing electrical circuits of a recreational vehicle Method and apparatus for testing electrical circuits of a recreational vehicle are disclosed. The method incorporates use of a printed circuit board assembly supporting a plurality of vehicle interface contacts; a controller programmed with vehicle diagnostics code ... | 10/17/2006 |
| 7123136 | Indicator system having multiple LEDs An indicator system having light emitting diode (LED) indicators and an open-circuit detecting circuit. In the open-circuit detecting circuit, a voltage at a point between a constant current source and the first resistor is applied to a base of a transistor. The sec... | 10/17/2006 |
| 7106068 | Exterior lamp check for motor vehicles An automated system for cycling vehicle lamps on and off allows direct inspection by one person of operability of the lamp bulbs while doing a walk around of the vehicle. The system is switch operated. Interlocks to operation are based upon the status of the vehicle... | 09/12/2006 |
| 7106182 | Simplified truck tractor socket wiring A power distribution unit useful in a truck tractor to apply electrical power to a selected one or more of a plurality of signal terminals of a tractor-mounted connector in a tractor-to-trailer electrical connection. The power distribution unit comprises a power bus... | 09/12/2006 |
| 6975312 | Computer system having network connector and method of checking connection state of network cable therefor A computer system having a network connector to which a network cable is connected, including a displaying part displaying a connection state of the network cable; a signal processing part processing a signal inputted through the network connector; and a control par... | 12/13/2005 |
| 6958611 | Diagnostic remote control for electrical components on vehicle A method of actuating electrical components of a vehicle, such as a heavy duty truck, for performing diagnostic analysis on the electrical components on the truck without the assistance of a technician is disclosed. The method includes relaying a signal from a remot... | 10/25/2005 |
| 6731116 | Short-circuit detector A short-circuit detector has connected between positive and negative terminals of a DC power source a series connection including sequentially a first switch, a first detection resistor, a second detection resistor and a second switch, a third switch between a groun... | 05/04/2004 |
| 6674288 | Vehicle lamp inspection system A vehicle provides the automatic activation and deactivation of vehicle lights in a predetermined sequence upon user request to assist the user in making a sight inspection of operation of the lights without further human help.... | 01/06/2004 |
| 6636047 | Method and device for recognizing a trailer or semitrailer of a motor vehicle A method for recognizing a trailer or semitrailer of a motor vehicle which includes activating at least one brake light of the trailer or semitrailer, independently of the driver, measuring a current flowing in a line assigned to the brake light of the tr... | 10/21/2003 |
| 6466028 | Trailer tether sensor circuit A sensor circuit detects whether an electrical connection exists between a tractor portion and a trailer portion of a tractor/trailer vehicle. The circuit includes a first chassis electrical ground in the tractor portion and a second vehicle chassis groun... | 10/15/2002 |
| 6448779 | Wiring test assembly A wiring test assembly for validating and troubleshooting electrical problems with vehicle wiring assemblies for trailers. The wiring test assembly includes a housing with a bottom portion hingedly coupled to a top portion, a plurality of indicator lamps ... | 09/10/2002 |
| 6323651 | Diagnostic trailer center device The invention is a device for testing the electrical circuitry on all trailers used in the cargo industry. The device plugs into the electrical connector of a trailer and allows a single mechanic to test and make brake adjustments without the assistance o... | 11/27/2001 |
| 6297646 | Electrical tester for small motor vehicles A tester includes a housing containing a passive test circuit including a plurality of LEDs respectively connected to terminals of a multi-terminal connector jack on the housing for connecting the tester, by means of an associated cable harness, between a... | 10/02/2001 |
| 6265878 | Reliable trailer tester Apparatus and method for testing operation of devices on a vehicular trailer without the necessity of a truck being connected thereto. A digital signal which is different for each device to be tested is encoded and wirelessly transmitted. Upon receipt of ... | 07/24/2001 |
| 6172508 | System for testing tractor and trailer light systems A new and improved system for testing tractor and trailer light systems interconnected by a cable wherein the trailer has a gladhand. The system includes a housing having a front control panel, a pair of battery terminals connected to said housing for con... | 01/09/2001 |
| 6154035 | Remote control fleet safety inspection system A safety inspection system includes a remote control unit having a user interface that is operated by a user to communicate commands to a main unit. The main unit is coupled to a power source, a source of pressurized air, and a trailer, such as a trailer ... | 11/28/2000 |
| 6081189 | Apparatus for testing the light circuit of a trailer An apparatus is provided for electrically testing the standard light circuit of a trailer. The apparatus includes a battery and a flasher component electrically connected to a positive terminal of the battery. A switch is electrically connected to the fla... | 06/27/2000 |
| 6075439 | Device for current or voltage supply in vehicle A device for current or voltage supply in a vehicle trailer or vehicle support which is connected with a pulling vehicle through at least one braking light conductor and an indicating conductor and has at least one electrical consumer, the device has an i... | 06/13/2000 |
| 6043661 | School bus and trailer systems tester A portable diagnostic device for checking electrical signalling systems of school buses and/or tractor trailers. The device has several receptacles for connection to a corresponding receptacle or pin connector of a school bus and most types of trailers. O... | 03/28/2000 |
| 5990788 | Tester for automotive trailer light systems The tester includes mating electrical connectors which permit the tester to be positioned between the respective plugs of the respective electrical cables running between a towing vehicle and from a trailer. The container for the tester preferably has mag... | 11/23/1999 |
| 5936407 | Intravehicular auto harness integrity tester with switch An intravehicular auto harness tester with switch consisting of a first housing unit mountable within or upon the dashboard of a motor vehicle containing three small light emitting diodes with wiring leading thereto and therefrom coupled with one resistor... | 08/10/1999 |
| 5831436 | Intravehicular auto harness integrity tester An intravehicular auto harness tester consisting of a first housing unit mountable within or upon the dashboard of a motor vehicle containing three small light emitting diodes with wiring one wire per diode leading thereto and then therefrom and ultimatel... | 11/03/1998 |
| 5635843 | Auto harness integrity tester An auto harness integrity tester the components of which are respectively a housing unit protectively holding three male prongs extending from holes in one end thereof adjacent a female socket pocket in this end of the housing unit with wiring running fro... | 06/03/1997 |
| 5604439 | Tractor/trailer lamp circuit continuity test device An auxiliary plug-and-socket assembly (28) has a plurality of pins (29) at one end which plug into a socket (30) at the rear end of a tractor vehicle (31) and sockets (32) at the other end which receive a plug (33) from a trailer vehicle. The auxiliary as... | 02/18/1997 |
| 5602482 | Trailer systems tester A portable diagnostic device for checking electrical signalling systems of road going trailers. The device has several receptacles for connection to a corresponding receptacle or pin connector of most types of trailers. An electrical circuit includes swit... | 02/11/1997 |
| 5416421 | Trailer lamp testing and lamp storage apparatus A trailer lamp testing and lamp storage apparatus is provided for connecting to an electrical connector of a trailer, wherein the electrical connector of the trailer has a predetermined number of contacts for a predetermined number of lamp circuits in the... | 05/16/1995 |
| 5414362 | Device for verifying the wiring of an electrical receptacle for a towed vehicle A device for testing a multi-terminal electrical service receptacle on a towing vehicle includes an electrically insulative body of elongated shape having forward and rearward faces. Electrical contacts are disposed in the forward face to engage the termi... | 05/09/1995 |
| 5192912 | Apparatus for determining wiring orientation at electrical connectors including plural light indicators and rotary switch A portable apparatus for checking the wiring orientation at electrical connectors of trailers or trailer towing vehicles is described. The housing of the apparatus supports a rotary switch and a plurality of multi-terminal connector plugs and/or receptacl... | 03/09/1993 |
| 5095276 | Tractor trailer light system test circuit A tractor-trailer light system test circuit comprises: a first multi-pin plug; a plurality of circuit breakers; a second multi-pin plug; an audible buzzer; an ON-OFF push button switch; a first LED, a second LED, and a third LED; a plurality of resistors;... | 03/10/1992 |
| 5086277 | Apparatus and method for performing diagnostic tests on the electrical systems of recreational vehicles and the like Testing apparatus is coupled to the plug used to connect the electrical system of a towed or trailer vehicle with a main or powered vehicle. The plug typically has terminals which connect related trailer vehicle electrical components with components in th... | 02/04/1992 |
