Patents by Inventor Henry R. Mallory

Henry R. Mallory 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).

  • Constant illumination flashlight
    Patent number: 4499525
    Abstract: A power supply circuit for generating a power pulse train for an incandescent bulb in a flashlight which results in a relatively constant illumination output from the flashlight despite the decline in output voltage from a battery power supply therefor during discharge. The power supply circuit operates to compensate for the lower output voltage from the battery power supply by increasing the duty cycle of the pulse train to provide wider pulse widths therein, and eventually the wider pulse widths merge into a DC power supply near the end of the useful service life of the battery power supply.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: February 12, 1985
    Assignee: Duracell Inc.
    Inventor: Henry R. Mallory
  • One piece battery holder
    Patent number: 4325106
    Abstract: A battery holder comprising a drawer having a plurality of compartments, each sized to accommodate a single battery, each compartment being polarized so that a battery can be placed therein only in a predetermined position, means for electrically interconnecting the batteries, and means for connecting a user circuit to the battery holder. The battery holder can further comprise means for retaining the battery within the compartment and a circuit switch to protect the user circuit from circuit runaway.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: April 13, 1982
    Assignee: Duracell International Inc.
    Inventors: William Bartunek, Gordon E. Kaye, Henry R. Mallory
  • Battery package with DC to DC converter
    Patent number: 4296461
    Abstract: A battery package having a casing which contains at least one electrochemical cell electrically connected to a DC to DC converter. A pair of electrical connections are located on the casing to electrically connect the battery package to a load. The converter conducts and the cell discharges only when a load is present across the electrical connection.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: October 20, 1981
    Assignee: Duracell International Inc.
    Inventors: Henry R. Mallory, Steven J. Nichols
  • Portable waterproof fluorescent lantern
    Patent number: 4268894
    Abstract: A portable waterproof fluorescent lantern having a case impervious to the entry of water, a fluorescent lamp within the case, a self-contained power source within the case for powering the lamp and means for activating the power source which is waterproof and operatively associated with the case.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: May 19, 1981
    Assignee: Duracell International Inc.
    Inventors: William Bartunek, Henry R. Mallory
  • Electrical device
    Patent number: 4136438
    Abstract: An enclosure for an electrochemical device, especially useful for electrochemical cells having an internal pressure above ambient, wherein the enclosure is formed in accordance with techniques based upon aerosol container filling procedures.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: January 30, 1979
    Assignee: P. R. Mallory & Co. Inc.
    Inventor: Henry R. Mallory
  • Fluorescent lantern
    Patent number: D271909
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: December 20, 1983
    Assignee: Duracell Inc.
    Inventor: Henry R. Mallory