U.S. patent number 3,652,845 [Application Number 05/047,052] was granted by the patent office on 1972-03-28 for lamp guard.
Invention is credited to Frank W. Thomas.
United States Patent |
3,652,845 |
Thomas |
March 28, 1972 |
LAMP GUARD
Abstract
A lamp guard having a clamping band for securing the same to a
lamp socket, a plurality of substantially U-shaped wire members
having the free ends of the legs thereof integrally secured to the
clamping band and extending to one side of the clamping band and
adapted to enclose and protect a lamp; and a pair of rings, one
integrally joined to the legs of the wire members at an
intermediate point thereon and the second integrally joined to the
bight portions of the U-shaped members.
Inventors: |
Thomas; Frank W. (Parkton,
MD) |
Family
ID: |
21946811 |
Appl.
No.: |
05/047,052 |
Filed: |
June 17, 1970 |
Current U.S.
Class: |
362/378 |
Current CPC
Class: |
F21V
15/02 (20130101) |
Current International
Class: |
F21V
15/02 (20060101); F21V 15/00 (20060101); F21v
015/00 () |
Field of
Search: |
;240/102,27,40,54,54A |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Queisser; Richard C.
Assistant Examiner: Beauchamp; John P.
Claims
Having described a preferred form of my invention what I claim and
desire to secure by Letters Patent is:
1. A lamp guard comprising:
a. a clamp band adapted to clampedly engage a lamp socket;
b. a plurality of substantially U-shaped, open-end side leg members
having the open ends of the U-shaped members fixedly attached to
the clamping band and extending outwardly from one edge
thereof;
c. a first continuous ring member encircling the legs of the
U-shaped side leg members fixedly attached thereto at points
intermediate of the length of the side leg members;
d. a second continuous ring member encircling the side legs
adjacent the U-shaped ends of the side leg members;
e. each of the U-shaped end portions of the side leg members having
a central section formed perpendicular to the side leg portion of
the side leg member adapted to extend in a substantially parallel
plane with and adjacent the second ring member, and means for
fixedly attaching the side leg members to the second ring.
2. A structure as defined in claim 1 in which the central portions
of the U-shaped side leg members are formed into a bight portion to
engage the outer lower surface of the second ring, and means for
fixedly attaching at least the bight portion of the U-shaped leg
members to the second ring.
Description
This invention relates to a lamp guard and more particularly to a
lamp guard of the type adapted to enclose an electric lamp or bulb
and protect the same from blows or the like. Guards of this general
character are used extensively in industrial or shop areas which
use open electric bulbs for illumination and which are subject to
frequent breakage by being accidentally struck or by other
abuse.
There are a variety of guards for protecting electric bulbs on the
market but most of these are not completely satisfactory mainly
because they are too flimsy and do not stand up too well when
subjected to hard usage with the result that, not only are the
guards bent beyond repair but are often completely broken and the
bulbs within destroyed, requiring frequent replacement of both
these items.
Applicant has overcome these disadvantages by his guard,
particularly in the manner in which its parts are arranged and in
the manner and at what specific points they are fastened
together.
It is therefore one object of my invention to produce a lamp guard
which is sturdy enough to withstand the hard use and abuse normally
given such objects in factory and shop.
It is another object to produce such a guard which can be
manufactured by established methods at a reasonable cost.
Still further objects of the invention include the provision of a
guard which will enable removal and replacement of the lamp bulb
without necessitating removal of the guard; and in the provision of
a guard which can be easily attached to lamp sockets of slightly
varying sizes without the use of tools other than a simple
screwdriver.
The above and other objects and advantages will become more
apparent as this description proceeds and reference is had to the
accompanying drawing forming a part of this specification and in
which:
FIG. 1 is a top plan view of the guard according to my
invention;
FIG. 2 is a bottom plan view;
FIG. 3 is a side elevation; and
FIG. 4 is a section on line 4--4 of FIG. 3.
Referring more specifically to the drawing, 10 generally indicates
a two part clamp having arcuate portions 11 and 12 adapted to fit
around an electric lamp socket (shown in phantom at 13 in FIG. 3)
and outstanding perforated ears 11' and 12', through which clamping
bolt and nut means 14 extends for drawing the two parts of the
clamp together to effect the clamping action about the lamp
socket.
A number of side members generally indicated 15 are attached to the
two part clamp. These side members are preferably made of wire and
are generally U-shaped, having leg portions 16 with the free ends
17 thereof welded or otherwise integrally secured to the two part
clamp. The legs 16 extend to one side of the clamp and are bent
outwardly at 18 to form, in effect, diverging leg portions 19 for
some distance below the clamp to provide space therewithin to
contain the bulb. The legs 16 are bent inwardly again at 20 and the
leg portions 21 below these bends are extended in substantially
parallel relationship with each other to the bight portions of the
U-shaped side members generally indicated at 22. The bight portions
22 are formed into three substantially straight, but angularly
related portions 23, 24 and 25, as clearly shown in FIG. 2. A ring
26 surrounds the leg portions 21 just below the bends 20 and is
secured to these leg portions by welding or any equivalent means at
points 27 and 28 on each of the U-shaped side members.
A second ring 29 surrounds the leg portions 21 just above the bight
portion 22. In fact, the angularly related portions 24 and 25 of
the bight portion are bent so as to extend from within the ring 29
to below the ring and lie on the undersurface thereof and the
portion 23 of the bight portion is thus made to lie entirely below
the ring 29 as can be clearly seen in FIGS. 2 and 3.
The ring 29 is secured to the leg portions by welding or equivalent
means. It has been found convenient to spot weld the legs to the
ring at points 30 between the vertical sections of the legs and the
inner surface of the ring and at points 31 and 32 between the
angularly related portions 23, 24 and 25 of the bight portion of
the U-shaped side members and the under surface of the ring 29. It
has been found that fastening the ring 29 to the side members in
this fashion and at the specific points mentioned results in an
extremely strong structure which will withstand extremes in rough
treatment and abuse.
* * * * *