U.S. patent number 3,833,955 [Application Number 05/142,914] was granted by the patent office on 1974-09-10 for multipurpose light assembly.
Invention is credited to Clarence E. Hulbert, Jr..
United States Patent |
3,833,955 |
Hulbert, Jr. |
September 10, 1974 |
MULTIPURPOSE LIGHT ASSEMBLY
Abstract
A buoyant body of foamed polyurethane equipped with an
illuminating light which is directed downwardly into the water when
the body is floating on the water's surface. A smaller signal light
at the top of the body serves as a warning light. The assembly may
be held by a handle formed along its upper end. The light emitting
face of the assembly is sealed with a recessed, light transmitting
face plate to provide a treated, directional light beam of white
light set in a thin annular field of blue light to provide improved
illumination in highly reflective environments. Power is preferably
supplied from a remote source through a flexible electrical line
and a three-way switch is included on the assembly to energize the
illuminating light and/or the signal light. The buoyant body has a
low center of gravity and is equipped with an annular recess along
its outer surface which cooperates with the inset area over the
face plate to increase floatation stability when the body is in an
upright position.
Inventors: |
Hulbert, Jr.; Clarence E. (West
Columbia, TX) |
Family
ID: |
26834648 |
Appl.
No.: |
05/142,914 |
Filed: |
May 13, 1971 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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136799 |
Apr 21, 1971 |
3754135 |
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Current U.S.
Class: |
441/16; 441/22;
362/253; 362/477; 362/509 |
Current CPC
Class: |
F21V
9/08 (20130101); F21S 8/00 (20130101); F21V
9/02 (20130101); A01K 97/02 (20130101); F21W
2131/401 (20130101) |
Current International
Class: |
F21V
9/00 (20060101); F21V 9/08 (20060101); F21V
9/02 (20060101); F21S 8/00 (20060101); B63b
045/00 () |
Field of
Search: |
;9/8.3E
;240/26,2LC,46.01,46.45,46.59 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Blix; Trygve M.
Assistant Examiner: O'Connor; Gregory W.
Attorney, Agent or Firm: Torres & Berryhill
Parent Case Text
This application is a continuation-in-part of my prior copending
U.S. patent application executed on Apr. 21, 1971, entitled "Light
Treating Means" and bearing Ser. No. 136,799, now U.S. Pat. No.
3,754,135.
Claims
What is claimed is:
1. A multipurpose light assembly comprising:
a. a buoyant body for carrying lighting means;
b. first and second axially spaced ends included in said body;
c. an outer surface on said body extending axially between said
first and second ends;
d. first energizable light producing means carried in said body and
adapted when energized to direct an illuminating beam of light from
said first body end; and
e. stabilizing means including a substantially annular recessed
area formed in said outer surface intermediate said first and
second ends for rendering said body stable while said body is
floating on a water surface in a position with said first body end
in contact with the water surface and said second body end elevated
above said water surface, said recessed area disposed at a point
along said body such that a portion of said recessed area is above
the water surface while said body is floating in said position.
2. A multipurpose light assembly as defined in claim 1 further
including handle means for carrying and manipulation of said
body.
3. A multipurpose light assembly as defined in claim 2 wherein:
a. said second body end includes second energizable light producing
means adapted when energized to provide a warning light; and
b. said first and second light means are substantially coaxially
disposed whereby said second light means is elevated above the
water surface while said first body end is floating on a water
surface.
4. A multipurpose light assembly as defined in claim 1 wherein:
a. said first and second spaced ends of said body are substantially
coaxially disposed about a central axis; and
b. said body is substantially in the form of a figure of revolution
about said central axis.
5. A multipurpose light assembly as defined in claim 4 wherein the
center of gravity of said light assembly is substantially on said
central axis and is more closely disposed to said first than to
said second body end.
6. A multipurpose light assembly as defined in claim 5 wherein:
a. said first light means includes a sealed beam lamp;
b. said body is formed from a polyurethane material;
c. handle means are connected to said body adjacent said second
body end;
d. a light transmitting face plate is disposed adjacent said first
body end over said first light means;
e. said face plate is recessed from said first body end to form an
annular depression in said body; and
f. a second energizable light producing means is carried on said
second body end.
7. A multipurpose light assembly comprising:
a. a buoyant body for carrying lighting means;
b. first and second spaced ends included in said body;
c. first energizable light producing means carried in said body and
adapted when energized to direct an illuminating beam of light from
said first body end;
d. stabilizing means included with said body for rendering said
body stable while said body is floating on a water surface with
said first body end in contact with the water surface and said
second body end elevated above said water surface;
e. a light transmitting face plate disposed adjacent said first
body end over said first light means whereby light from said first
light means is directed through said plate;
f. a first light filtering portion included in said plate for
preferential transmission of visible light of preselected
wavelengths;
g. light aperture means disposed adjacent said first filtering
portion whereby light transmitted through said aperture means is
mixed with light transmitted through said first filtering portion
to form a combined light at a remote location;
h. a central, substantially circular area included in said first
light filtering portion;
i. a substantially annular light aperture area formed
concentrically about said circular area of said first light
filtering portion; and
j. a second light filtering portion included in said face plate
comprising a substantially annular area formed concentrically about
both said central circular area and said annular light aperture
area.
8. A multipurpose light assembly as defined in claim 7 wherein said
first and second light filtering portions include means for
preferential transmission of light wavelengths of approximately 500
nanometers.
9. A multipurpose light assembly comprising:
a. a buoyant body formed from a polyurethane material for carrying
lighting means, said body being substantially in the form of figure
of revolution about a central axis;
b. first and second spaced ends substantially coaxially disposed
about said central axis with the center of gravity of said light
assembly being substantially on said central axis at a point more
closely disposed to said first than to said second body end;
c. first energizable light producing means, including a sealed beam
lamp, carried in said body and adapted when energized to direct an
illuminating beam of light from said first body end;
d. stabilizing means including a substantially annular recessed
area formed in the outer surface of said body intermediate said
first and second ends for rendering said body stable while said
body is floating on a water surface with said first body end in
contact with the water surface and said second body end elevated
above said water surface;
e. handle means connected to said body adjacent said second body
end;
f. light transmitting face plate means disposed over said first
lighting means and recessed from said first body end to form an
annular depression in said body, wherein:
i. said face plate includes a first light filtering portion for
preferential transmission of visible light of preselected
wavelengths;
ii. light aperture means are disposed adjacent said first filtering
portion whereby light transmitted through said aperture means is
mixed with light transmitted through said first filtering portion
to form a combined light at a remote location;
iii. said first light filtering portion includes a central,
substantially circular area;
iv. said light aperture means includes a substantially annular
light aperture area formed concentrically about said circular
area;
v. said face plate further includes a second light filtering
portion comprising a substantially annular area formed
concentrically about both said central circular area and said
annular light aperture area; and
vi. said first and second light filtering portions include means
for preferential transmission of light wavelengths of approximately
500 nanometers; and
g. a second energizable light producing means carried on said
second body end.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a multipurpose light assembly
designed to float on the water's surface for fishing or signaling
purposes, or to be hand held to provide a directional illuminating
light.
2. Brief Description of the Prior Art
The majority of the prior art lights known to applicant which have
been employed for attracting fish are normally rigidly attached to
the boat or structure from which they are used. Often, such prior
art light must be submerged and held below the surface of the
water. Because of the rigid mounting required to properly position
these fish attracting lights, such lights are usually not suitable
for general purpose application.
The prior art does not include a satisfactory, free floating lamp
designed to direct a fish attracting or illuminating beam
downwardly into the water. In addition, none of such prior art
known to applicant includes special stabilizing provisions for
preventing a free floating lamp of this type from tipping over when
it encounters waves or wind.
Conventional incandescent lights employed in water environments are
also unsatisfactory to the extent that they produce undesirable
reflection which impairs illumination. The diffuse light provided
by a gas lamp employing a glowing mantle has often been used in
water environments to provide a light which reduces reflection from
the surface of the water. Gas lamps are, however, subject to
breakage when they come into contact with the water because of the
high heat associated with the lamps operation. In addition, when
employed as a fish attracting lamp, gas lanterns and other light
means which are suspended above the water's surface attract flying
insects such as mosquitoes and gnats which are a source of
annoyance to night fishermen. Conventional gas lanterns also lack
the ability to provide a highly directional, relatively intense
light beam.
SUMMARY OF THE INVENTION
A buoyant body is employed to support a sealed beam lamp which
emits an intense, highly directional beam of illuminating light
from the lower end of the body. The upper end of the lamp body is
provided with a signaling light and a handle. The external body
surface is equipped with a stabilizing design which tends to
maintain the body in an upright position even when the body is
subjected to wave or wind forces. The body is equipped with a low
center of gravity which also increases the floatation stability of
the body when it is in an upright position. The light emitting end
of the body is covered by a recessed, specially treated light
transmitting face plate which simultaneously provides an improved
light beam and acts as a waterproofing shield. The depressed area
formed by recessing the plate from the end of the body creates a
low pressure area when the body is raised with respect to the water
surface which further increases floatation stability. When floating
on a water surface, the illuminating fish attracting light emitted
from the assembly of the present invention is directed downwardly
into the water.
A foamed polyurethane material is preferably employed for forming
the light body. The density of the material is selected to provide
the desired buoyancy while maintaining a predetermined portion of
the body submerged to assist in the stabilizing action. Use of a
suitable polyurethane as the body material ensures that the body is
heavy enough to float properly in the water to resist wind and wave
movement and tipping and to properly submerge the stabilizing
portion of the body. The polyurethane body also provides the
necessary structural strength while simultaneously providing a body
which is not unduly heavy so that it may be used as a hand held
device.
The external design of the lamp of the present invention includes
spaced upper and lower ends which are adapted to float above the
water's surface and on the water's surface respectively. The upper
and lower ends are coaxially disposed about a central axis and the
body is substantially in the form of a figure of revolution formed
about the central axis. The stabilizing design is included in the
body by providing a recessed, annular section formed along the
outer surface of the body between the upper and lower ends. The
design, in addition to rendering the light stable in wave and wind
action, lends itself to modern molding techniques to reduce
production costs.
The treated, light treating face plate produces an improved, highly
directional beam of white light set in an annular field of blue
light. Light having the characteristics of that produced by the
present invention is particularly advantageous in highly reflective
environments such as are encountered on the water's surface, in
water and in rain or fog. The assembly of the present invention may
be employed as a free floating, fish attracting light, a hand held
illuminating light, a floating signaling or warning light and an
emergency life preserver. Additional advantages, features and uses
of the lamp of the present invention may also be determined from
the following specification, the related drawings and claims.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view illustrating the multipurpose light
assembly of the present invention floating on a water surface;
FIG. 2 is a bottom view taken along the line 2--2 of FIG. 1
illustrating the light emitting end of the light assembly; and
FIG. 3 is an enlarged, vertical cross-sectional view taken
substantially along the line 3--3 of FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1, the multipurpose light assembly of the present
invention is indicated generally at 10 floating on the surface of a
body of water W. The assembly 10 includes a main body section 11
having an upper end 12 and a lower end 13. In normal usage, the
assembly 10 is adapted to float on a water surface with the lower
end 13 being slightly submerged below the surface and the upper end
12 elevated above the water's surface. Power to supply the various
light producing means contained within the body section 11 is
supplied through an insulated, flexible, electrical line 14 which
extends to a source of electrical power (not shown). Although not
specifically illustrated, it will be understood that the source of
electrical power may be a conventional storage battery carried by a
boat or other structure.
The upper body end 12 is equipped with a handle 15 by which the
light body may be grasped to be moved or to be used for a hand
light.
Referring jointly to FIGS. 1 and 3, the upper end of the body 11 is
equipped with a signaling or warning light indicated generally at
16. An illuminating light means indicated generally at 17 is
carried adjacent the lower end 13 of the lamp body and is
positioned to direct a beam of light from the lower body end. A
suitable waterproof switch indicated at 18 is employed to regulate
operation of the warning light 16 and the illuminating light 17. It
will be understood that the switch may include suitable contacts
for selectively energizing or deenergizing either the illuminating
light 17 or the signaling light 16, separately or together.
The signal lamp 16 includes a transparent or translucent lens cover
16a which is colored red, yellow or any other suitable color to
provide a relatively low intensity signaling or warning light. The
lens cover 16a is press fitted to a base portion 16b which in turn
is secured by gluing or any other suitable means to the upper end
portion 12 of the body 11. The lamp 16 includes a conventional
incandescent bulb such as bulb 16c mounted in a suitable
receptacle. An insulated, electrical lead 16d extends from the lamp
16c to an electrical connector 19 contained within a central cavity
11a formed within the body portion 11.
Primary illumination is provided by a conventional sealed beam lamp
20 mounted within the body cavity 11a. Electrical connections 20a
extend to the connector 19 and supply electrical power to an
incandescent filament 20b contained within the lamp 20. In the
preferred form, the sealed beam lamp 20 also includes an opaque,
reflective shield 20c, a parabolic reflecting surface 20d and a
clear light emitting face 20e whereby light emanating from the
energized filament 20b is reflected from the surface 20b through
the clear face 20e. Also connected to the connector portion 19 are
insulated electrical leads 18a which extend to the multiple
position switch 18. It will be understood that the power supplied
through the separate insulated lines (not illustrated) extending
within the supply line 14 is alternatively transmitted to either
the bulb 16c, the bulb 20 or both bulbs, or is withheld from both
bulbs depending on the position of the switch 18.
The upper and lower body ends 12 and 13 respectively are
substantially concentric and are spaced from each other along a
common central axis. The external configuration of the body 11 is
formed substantially as a figure of revolution about the central
axis. An annular recess 11b is formed along the external surface of
the body 11 to provide stability in wind and wave action. When
floating on the water's surface, a lower annular body portion 11c
extends below the water's surface and the upper portion extends
above the water surface to provide a stabilizing effect.
To further assist in maintaining the body 11 stable while it is
floating on the water, the center of gravity is maintained as
nearly as possible along the central axis connecting the upper and
lower ends 12 and 13, respectively, and as close as possible to the
lower end 13.
Additional wave and wind stabilization is effected by recessing a
specially treated face plate 21 from the base of the lamp body to
provide a depression 22. A fluid tight joint is formed between the
body 11 and the plate 21 with a seal or gasket 23 of rubber or
other suitable material. It will be appreciated that the face plate
21 and the seal 23 cooperate with the engaged portions of the body
11 to prevent water from entering the cavity 11a. The plate 21 is
preferably secured in position by suitable metal screws 24 which
extend through the plate and are anchored to the body 11. The
screws 24 are also equipped with waterproofing gaskets (not
illustrated) to prevent leakage through the plate. The depression
22 tends to create a low pressure area when the body is raised
relative to the surface of the water W to thereby increase the
floatation stability of the lamp body when it is in an upright
position. The face plate 21 is preferably made from a suitable
clear, transparent glass or plexiglass material.
The face plate 21 and lamp 20 cooperate to provide an improved
light in a manner more fully described in my aforesaid earlier
copending application. Basically, as illustrated in FIG. 2, the
face plate 21 includes a central circular coating 21a of a blue,
translucent light filtering material surrounded by a clear annular
area 21b which in turn is surrounded by a second annular coating
area 21c of blue translucent light filtering material. The central
area and the two circular areas cooperate to form a filtered zone
plate by which the light produced by the lamp 20 is filtered and
mixed to provide a more natural white light. As more fully
explained in said prior application, the areas 21a and 21c are
formed by providing a thin, colored coating of translucent material
over a clear transparent plate of glass or plexiglass. The coating
functions to provide preferential transmission of visible light of
preselected wavelengths, which in the case of blue coatings,
corresponds to light having a wavelength of approximately 500
nanometers. The annular, clear area 21b functions as an aperture
means and is positioned and dimensioned in such a way that light
transmitted through the aperture means 21b is mixed with that
transmitted through the treating areas 21a and 21c. The resultant
beam of white light set in a relatively thin annular field of blue
light exhibits improved illumination and reduces glare.
The body 11 and handle 15 are preferably made from a foamed
polyurethane. The material is preferably diphenylemethane
diisocyanate processed in a prepolymer form with crosslinking
reactants, flurocarbon blown. With this material, approximately 90%
closed cell construction may be effected to produce a low density
material having superior structural strength with excellent solvent
resistance and flame resistance.
The foregoing disclosure and description of the invention is
illustrative and explanatory thereof, and various changes in the
size, shape and materials as well as in the details of the
illustrated construction may be made within the scope of the
appended claims without departing from the spirit of the
invention.
* * * * *