Abstract: Disclosed is an eye simulator device, wherein same is a medical training aid and includes: an eyepiece having a display configured to project at least one image onto or through a convex shaped front surface of a simulated eyeball of the eyepiece; a support configured to hold the eyepiece; a simulated eyelid pivotally attached to the support; and an actuator assembly having an actuator arm and an electromagnetic (EM) coil in connection with the actuator arm, so as to control a motion of the simulated eyelid, which allows to more realistically mimic the eye, and to more intuitively mimic a motion change of the eye, and it is illustratable to show a change process of the eye by projecting an eye condition, making it easier for a student to understand.

Abstract: A conspicuity reflector mounting assembly for mounting on a truck fender in an orientation perpendicular to a road surface in compliance with DOT regulations comprises a plate having a flat panel surface for mounting a conspicuity reflector, and a mounting assembly adapted to mount the plate to a fender-mounting post at an orientation perpendicular to a road surface. The conspicuity reflector can be mounted to the flat panel surface. A truck fender is shown having a conspicuity reflector mounting assembly mounted theron.

Abstract: A hinge and roller assembly for use in a roll-up door including a pair of leaves each forming a portion of a bearing socket, a bushing mounted in the bearing socket, a shaft slidably mounted in the bushing. The shaft mounts a roller on one end and the roller is adapted to roll in a track. A spring is mounted between the shaft and the bushing to bias the shaft axially toward the track. A releasable retainer on the bushing removably retains the bushing in the socket. Preferably, each of the leaves includes a plate through which the hinge is mounted to the door and an integral strap which is bent into a circular shape to define a portion of the socket and is attached at a distal end to the plate.

Abstract: The present invention addresses an improved solution to the problem of cutover verification testing where a new digital switching system is to replace an existing switching system that serves at least a group of subscribers via continuous wire lines. It permits a plurality of existing wire lines to be concurrently connected to channel units associated with the new switching system without adversely impacting the existing service and automatic testing under the control of the new system.

Abstract: When a floating battery feed circuit is used to power telephone lines, it is desirable to provide an anti-corrosion biasing circuit to keep the voltage on the tip and ring conductors from becoming positive. This can be done using an anit-corrosion circuit that sinks a dynamic amount of current from the tip conductor. A line circuit including such biasing is, however, incompatible with special lines such as PBX lines that rely on a grounded tip conductor in the talk state. In accordance with the present invention, a constant current is supplied from a ground reference circuit to the ring conductor of such special lines only when loop current is flowing. The magnitude of this supplied current is such that the anti-corrosion circuit holds the tip conductor sufficiently close to ground potential to allow the proper operation of circuits connected to the special lines.