Abstract: The present invention provides new variable focal power Lens Units in an eyeglass frame, controlled by radar and electronics for the visually impaired, consisting of a Neodymium Iron Boron ring magnet in a flexible rubber binder having a convention pole e.g. North, (facing the electromagnet) attached to the stabilizer ring on the forward movable lens. Forward movement to supply positive focal power is achieved by repulsion coming from an electro ring magnet with a Barium Ferrite core in a flexible rubber binder, having a copper coil around the core creating the electromagnetic force when energized by the current controlled power supply. Rearward movement to supply negative focal power is achieved by attraction coming from the electro ring magnet in reverse operation.The second Lens Unit consists of an automatic fast focusing infinitely variable focal power Lens Unit consisting of a permanent magnet with an additional copper coil surrounding it to energize a clear magnetic fluid oil to have e.g.

Abstract: This invention will for the first time provide a digital read-out showing the amount of diopters either Positive or Negative with a zero starting point midway between the Positive and Negative dioxter readings. The people having their eyes checked will now be able to communicate in the most accurate way with their eye doctor using an adjustment knob for each eye respectively to obtain the prescription needed. This is achieved through a specially designed lens unit and through the use of direct gear rack drives attached to the movable lenses coupled to an encoder and that is battery powered producing a DC square wave output voltage and fed into a Positive to Negative read-out display Totalizer unit with LED electronic digital read-out that is available with a scaling factor for precise conversion to diopter values for each eye respectively. The Totalizer is a computerized unit with microchip circuitry running on DC battery current which makes the Vari-Lens.TM.

Abstract: The present invention provides an O-Ring mounted in a square shaped chamber in a housing. The O-Ring contains a groove adapted to move the O-Ring inner bore toward the center of the shaft in response to a pressurized fluid. The chamber is fed by a liquid or a gas. Internal pressure in the housing created primarily by rotation of the shaft, or by a pump from an outside source, feeds fluid to the chamber through openings in the housing, thereby expanding the O-Ring to lightly contact the shaft. This is a major benefit over conventional O-Rings, seals and prior art that enables the O-Ring to provide minimum drag and maximum sealing of internal lubricants for bearing operation. Another major benefit of this self-adjusting O-Ring is that it automatically compensates for wear, increasing its service life to many times that of conventional O-Rings.