Patent ID: 7095322
Filing Date: 2006-08-22
Classification: B60Q

Abstract:
1. A magnetically operated door-open indicator comprising: means for providing the enclosure for the piston which has to move in and out; and providing a clear cover on the outside of the truck to enable the driver to see the current position of the piston when the indicator presents the open or closed reading; and providing a means of attaching this tube and cover to the truck box; means for providing an actual moveable indicator which reacts to the polarity positions of the bar magnet; means for sealing the end of the tube located on the interior of the truck box; and designed to insure the correct installation of the tube; means for transporting the bar magnet up and away from the tube assembly when the door is open; and transporting the bar magnet to the correct position when the door is closed to place the attracting magnetic field of the bar magnet near the piston's magnetic field; and conversely, when the door is opened the lower half of the bar magnet, which has reverse polarity, will repel the indicator piston; means for fastening the door bracket to the interior side of the truck door; and attaching the inside and outside tube covers to the truck box wall; and means for causing the colorful piston to move in and out when affected by reversing polarity of the bar magnet when the door is raised or lowered.