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US2261001A - Flashlight head - Google Patents

Flashlight head Download PDF

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Publication number
US2261001A
US2261001A US241130A US24113038A US2261001A US 2261001 A US2261001 A US 2261001A US 241130 A US241130 A US 241130A US 24113038 A US24113038 A US 24113038A US 2261001 A US2261001 A US 2261001A
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US
United States
Prior art keywords
head
light
flashlight
flashlight head
body portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US241130A
Inventor
Bernard F Muldoon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US241130A priority Critical patent/US2261001A/en
Application granted granted Critical
Publication of US2261001A publication Critical patent/US2261001A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02Combinations of only two kinds of elements
    • F21V13/04Combinations of only two kinds of elements the elements being reflectors and refractors
    • F21V13/045Combinations of only two kinds of elements the elements being reflectors and refractors for portable lighting devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00Electric lighting devices with self-contained electric batteries or cells

Definitions

  • This invention relates to a flashlight head that is especially useful in connection with signaling
  • a flashlight head is made in such a way that it is readily visible from the sides when it is lighted so that the presence of one carrying it in the dark can be recognized easily.
  • a flashlight head is made of translucent material that may be colored in different colors, such as red for example.
  • This head is made so that it can be conveniently attached to a flashlight casing, and contains a reflector as well as a lens at the outer end thereof, and can be adapted to aid in keeping the lamp bulb in place.
  • a predetermined portion of this flashlight head is to be illuminated, and it is preferably provided either on the inside or outside or both with irregularities such as ribs or small projections in the shapes of pyramids, cones or cylinders, so that the light that passes therethrough will be diffused and render this portion of the head conspicuously visible from the sides of the flashlight.
  • reference character I indicates a portion of a flashlight casing that may be of a well known sort.
  • a portion of one of the battery cells 2 having a center contact 3 is also indicated.
  • the end of 'the casing l is externally threaded, as indicated at 4, and an electric light bulb -5 is held in place by being screwed into the plate 6 so that its center contact contacts with the center contact 3 when it is desired to light the bulb.
  • the switch mechanism for lighting or flashing the bulb may be of any well known sort, and since this mechanism does not constitute any part of this invention it is not shown on the drawing.
  • the flashlight head I has its smaller end or lower part 8 internally threaded at 9 to screw onto the threads 4 to attach this head to the casing I.
  • the intermediate portion H' is gradually enlarged and merges into the cylindrical portion l2.
  • a lens I3 is retained at the end of the portion l2 by means of a ring [4 that has internal threads I5 screwing onto the threads I 6 of the portion l2.
  • a reflector I1 is held in place in the head 1 in any convenient way and may be shaped of different shapes in accordance with the character of the beam of light that is desired for illuminating purposes.
  • a plurality of perforations or passages I8 are provided through the walls of the lens I! along its lower portion to permit the desired rays of light from the bulb to pass throughthe passages and strike the inside portion ll of the head 8 along a predetermined section thereof.
  • Irregularities of different sorts may be provided on the inside or outside of the portion II to diffuse the light and render this portion readily visible from the outside.
  • these irregularities are in the form of circular ribs l9, but it is well known that other irregularities can be used for this purpose.
  • passages or perforations l8 may be filled with glass or other transparent material which will permit sufficient light to pass through to illumine the portion II and still help reflect some of the light that may be needed for the direct beam of light that is used for illuminating purposes.
  • a body portion of translucent material adapted to support a lens
  • a reflector in said body portion having perforations along its lower portion so that light rays are projected laterally from the lamp bulb through said reflector directly into contact with said body portion.
  • a body portion of translucent material adapted to support a lens
  • a reflector in said body portion having openings through the lower portion thereof to permit light from a lamp bulb inside of said reflector to pass laterally from the lamp bulb through said reflector into contact with a predetermined portion of said body portion to render it visible from the outside.
  • a flashlight head in accordance with claim 2 ⁇ in which the body portion of translucent material is provided with light-diffusing means.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Description

Oct. 28, 1941. B. F. MULDOON FLASHLIGHT HEAD Filed Nov. 18, 1938 MM INVENTOR- RNEY.
24 z/mm ,or for warning purposes.
Patented Oct. 28, 1941 FLASHLIGHT HEAD Bernard F. Muldoon, Mountainview, N. .L, as-
signor to Henry Hyman, Brooklyn, N. Y.
Application November 18, 1938, Serial No. 241,130
Claims.
This invention relates to a flashlight head that is especially useful in connection with signaling By this invention a flashlight head is made in such a way that it is readily visible from the sides when it is lighted so that the presence of one carrying it in the dark can be recognized easily.
In carrying out this invention a flashlight head is made of translucent material that may be colored in different colors, such as red for example. This head is made so that it can be conveniently attached to a flashlight casing, and contains a reflector as well as a lens at the outer end thereof, and can be adapted to aid in keeping the lamp bulb in place. A predetermined portion of this flashlight head is to be illuminated, and it is preferably provided either on the inside or outside or both with irregularities such as ribs or small projections in the shapes of pyramids, cones or cylinders, so that the light that passes therethrough will be diffused and render this portion of the head conspicuously visible from the sides of the flashlight.
The invention will be understood from the description in connection with the accompanying drawing which is a longitudinal section through an illustrative embodiment of the invention.
In the drawing, reference character I indicates a portion of a flashlight casing that may be of a well known sort. A portion of one of the battery cells 2 having a center contact 3 is also indicated. The end of 'the casing l is externally threaded, as indicated at 4, and an electric light bulb -5 is held in place by being screwed into the plate 6 so that its center contact contacts with the center contact 3 when it is desired to light the bulb. The switch mechanism for lighting or flashing the bulb may be of any well known sort, and since this mechanism does not constitute any part of this invention it is not shown on the drawing.
The flashlight head I has its smaller end or lower part 8 internally threaded at 9 to screw onto the threads 4 to attach this head to the casing I. The intermediate portion H' is gradually enlarged and merges into the cylindrical portion l2.
A lens I3 is retained at the end of the portion l2 by means of a ring [4 that has internal threads I5 screwing onto the threads I 6 of the portion l2.
A reflector I1 is held in place in the head 1 in any convenient way and may be shaped of different shapes in accordance with the character of the beam of light that is desired for illuminating purposes. A plurality of perforations or passages I8 are provided through the walls of the lens I! along its lower portion to permit the desired rays of light from the bulb to pass throughthe passages and strike the inside portion ll of the head 8 along a predetermined section thereof.
Irregularities of different sorts may be provided on the inside or outside of the portion II to diffuse the light and render this portion readily visible from the outside. In the particular illustration shown on the drawing, these irregularities are in the form of circular ribs l9, but it is well known that other irregularities can be used for this purpose.
Some or all of the passages or perforations l8 may be filled with glass or other transparent material which will permit sufficient light to pass through to illumine the portion II and still help reflect some of the light that may be needed for the direct beam of light that is used for illuminating purposes.
What is claimed is:
1. In a flashlight head a body portion of translucent material adapted to support a lens, a reflector in said body portion having perforations along its lower portion so that light rays are projected laterally from the lamp bulb through said reflector directly into contact with said body portion.
2. In a flashlight head, a body portion of translucent material adapted to support a lens, a reflector in said body portion having openings through the lower portion thereof to permit light from a lamp bulb inside of said reflector to pass laterally from the lamp bulb through said reflector into contact with a predetermined portion of said body portion to render it visible from the outside.
3. A flashlight head in accordance with claim 2\, in which the body portion of translucent material is provided with light-diffusing means.
4. A flashlight head in accordance with claim 2, in which the body portion of translucent material is provided with irregularities to diffuse light.
5. In a flashlight head in accordance with claim 2 in which the body portion of said head has a screw threaded smaller end and a lens retaining larger end.
BERNARD F. MULDOON.
US241130A 1938-11-18 1938-11-18 Flashlight head Expired - Lifetime US2261001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US241130A US2261001A (en) 1938-11-18 1938-11-18 Flashlight head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US241130A US2261001A (en) 1938-11-18 1938-11-18 Flashlight head

Publications (1)

Publication Number Publication Date
US2261001A true US2261001A (en) 1941-10-28

Family

ID=22909387

Family Applications (1)

Application Number Title Priority Date Filing Date
US241130A Expired - Lifetime US2261001A (en) 1938-11-18 1938-11-18 Flashlight head

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726321A (en) * 1953-02-06 1955-12-06 Riotto Joseph Flashlights
US4150316A (en) * 1977-01-13 1979-04-17 Gte Sylvania Incorporated Incandescent projection lamp with internal reflector having light defining opening therein
US20020193265A1 (en) * 2001-03-30 2002-12-19 Beatrice Perron Detergent cosmetic compositions containing an anionic surfactant derived from amino acids and salts thereof and a soluble conditioning agent and uses thereof
US6637920B2 (en) * 2000-03-28 2003-10-28 Koito Manufacturing Co., Ltd. Vehicular lamp having improved luminance of tinted light

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726321A (en) * 1953-02-06 1955-12-06 Riotto Joseph Flashlights
US4150316A (en) * 1977-01-13 1979-04-17 Gte Sylvania Incorporated Incandescent projection lamp with internal reflector having light defining opening therein
US6637920B2 (en) * 2000-03-28 2003-10-28 Koito Manufacturing Co., Ltd. Vehicular lamp having improved luminance of tinted light
US20020193265A1 (en) * 2001-03-30 2002-12-19 Beatrice Perron Detergent cosmetic compositions containing an anionic surfactant derived from amino acids and salts thereof and a soluble conditioning agent and uses thereof

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