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US 4,656,565 AGranted
Flashlight
AssigneeMag Instrument, Inc.
InventorAnthony Maglica
Life of this patent
Estimating the term…
Abstract
A flashlight includes a barrel for retaining batteries. A reflector and lens located at one end is rotatable axially to vary the reflection dispersion of a light beam emanating through the lens from a lamp bulb. An internal cylindrical sleeve within the barrel provides the electrical path between a tail cap adjacent the one electrode end of the batteries and the end adjacent the reflector, lens, and bulb. The sleeve is a non-ferrous nickel plated material for improved conductivity between component parts.
Claims29
A flashlight comprising:
- a barrel for retaining at least one dry cell battery;
- a lamp bulb;
- means for holding the lamp bulb;
- a substantially parabolic reflector;
- a substantially planar lens;
- means for retaining the reflector and the lens located at one end of the barrel and removably attached thereto, said retaining means being adapted to be controllably axially translatable along the barrel such that the relative positional relationship between the reflector and the lamp bulb may be varied, thereby varying a reflection dispersion of a light beam emanating through the lens from said lamp bulb;
- a tail cap being engageable with the barrel at the end remote from the means for retaining the reflector and lens;
- means for electrically coupling a first electrode of the battery to a first electrode of the lamp bulb;
- and
- a conductive element within the barrel, said element being for electrically coupling a second electrode of the lamp bulb to a second electrode of the battery, said second electrode being located adjacent said tail cap;
- and
- wherein relative motion of the means for retaining the reflector and the lens in an axial direction towards the barrel for retaining the battery causes opening of the electrical coupling of at least one electrode of the lamp bulb with its respectively coupled battery electrode.
9 more elements
A flashlight comprising:
- a barrel for retaining at least two dry cell batteries in series connection;
- a bi-pin lamp bulb with electrodes of the lamp bulb being an elongated pin extending from the bulb;
- means for holding the lamp bulb;
- a substantially parabolic reflector;
- a substantially planar lens;
- means for retaining the reflector and the lens located at one end of the barrel, said retaining means being adapted to be controllably axially translatable along the barrel such that the relative positional relationship between the reflector and the lamp bulb may be varied, thereby varying a reflection dispersion of a light beam emanating through the lens from said lamp bulb;
- a tail cap being engageable with the barrel at the end remote from the means for retaining the reflector and lens;
- means for electrically coupling a first electrode of the batteries to a first electrode of the lamp bulb;
- and
- a sleeve within the barrel so that the batteries can be located in the sleeve, said sleeve being for electrically coupling a second electrode of the lamp bulb to a second electrode of the batteries, said second electrode being located adjacent said tail cap;
- and
- wherein relative motion of the means for retaining the reflector and the lens in an axial direction towards the barrel for retaining the batteries causes opening of the electrical coupling of at least one electrode of the lamp bulb with its respectively coupled battery electrode.
9 more elements
A flashlight comprising:
- a barrel for retaining in series a plurality of dry cell batteries;
- a bi-pin lamp bulb with each electrode of the lamp bulb being an elongated pin extending from the bulb;
- receptacle means at a first end of the barrel for holding the lamp bulb;
- a reflector;
- a lens;
- a head assembly for retaining the reflector and the lens adjacent the first end of the barrel and being removably attached to said first end of the barrel, said head assembly being adapted to be controllably axially translatable along the barrel such that the relative positional relationship between the reflector and the lamp bulb may be varied thereby varying a reflection dispersion of a light beam emanating through the lens from said lamp bulb;
- a tail cap being engageable with the barrel at a second end remote from the head assembly;
- means for electrically coupling a first electrode of the battery to a first electrode of the lamp bulb;
- a conductive element within the barrel, said conductive element being for electrically coupling a second electrode of the lamp bulb to a second electrode of the battery, said second electrode being located adjacent said tail cap;
- and
- wherein relative motion of the head assembly in an axial direction towards the barrel for retaining the batteries causes opening of the electrical coupling of at least one electrode of the lamp bulb with its respectively coupled battery electrode.
8 more elements
Dependencies are inferred from the claim text.