Patents by Inventor John F. Ahern

John F. Ahern has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Spring-hinged frame for eyeware
    Patent number: 5835185
    Abstract: A power and control system for micro-electronics is described, as for lightweight, battery-powered electrochromic (EC) eyewear. Preferably such system includes a primary, lithium-type cell and a secondary, sealed lead acid-type cell in a hybrid, power-sharing configuration capable of supplying the low-energy, high-current (pulse) drain requirements of microelectronics, e.g. a switchable EC lens. A switch-mode power supply controller manages the power-sharing load on the hybrid battery system such that the secondary cell is charged by the primary cell. The system is capable of meeting short-term pulse drain requirements of switching EC lenses from clear to fully darkened at an acceptably fast rate and long-term operating life requirements of approximately 1500 cycles.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: November 10, 1998
    Inventors: William R. Kallman, Leonard M. Dorfman, John F. Ahern
  • Electrochromic eyewear
    Patent number: 5455638
    Abstract: A power and control system for micro-electronics is described, as for lightweight, battery-powered electrochromic (EC) eyewear. Preferably such system includes a primary, lithium-type cell and a secondary, sealed lead acid-type cell in a hybrid, power-sharing configuration capable of supplying the low-energy, high-current (pulse) drain requirements of microelectronics, e.g. a switchable EC lens. A switch-mode power supply controller manages the power-sharing load on the hybrid battery system such that the secondary cell is charged by the primary cell. The system is capable of meeting short-term pulse drain requirements of switching EC lenses from clear to fully darkened at an acceptably fast rate and long-term operating life requirements of approximately 1500 cycles.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: October 3, 1995
    Assignee: Comdisco, Inc.
    Inventors: William R. Kallman, Mark B. Roberts, David F. Baretich, Leonard M. Dorfman, John F. Ahern
  • Electrochromic eyewear system, rechargeable eyewear and external charger therefor
    Patent number: 5455637
    Abstract: A power and control system for micro-electronics is described, as for lightweight, battery-powered electrochromic (EC) eyewear. Preferably such system includes a primary, lithium-type cell and a secondary, sealed lead acid-type cell in a hybrid, power-sharing configuration capable of supplying the low-energy, high-current (pulse) drain requirements of microelectronics, e.g. a switchable EC lens. A switch-mode power supply controller manages the power-sharing load on the hybrid battery system such that the secondary cell is charged by the primary cell. The system is capable of meeting short-term pulse drain requirements of switching EC lenses from clear to fully darkened at an acceptably fast rate and long-term operating life requirements of approximately 1500 cycles.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: October 3, 1995
    Assignee: Comdisco, Inc.
    Inventors: William R. Kallman, Mark B. Roberts, David F. Baretich, Leonard M. Dorfman, John F. Ahern