U.S. patent number 3,899,670 [Application Number 05/384,905] was granted by the patent office on 1975-08-12 for flashlight casing for a flat-shaped battery.
Invention is credited to Pierre Delfortrie.
United States Patent |
3,899,670 |
Delfortrie |
August 12, 1975 |
Flashlight casing for a flat-shaped battery
Abstract
A flashlight having a flat shaped casing with an opening in one
of its sidewalls through which a battery is inserted. The bottom
wall of the casing has a projection along its internal surface for
frictionally engaging the battery to secure the same in the
casing.
Inventors: |
Delfortrie; Pierre (Tiege Sart
Lez-Spa, BE) |
Family
ID: |
23519230 |
Appl.
No.: |
05/384,905 |
Filed: |
August 2, 1973 |
Current U.S.
Class: |
362/201 |
Current CPC
Class: |
F21L
2/00 (20130101) |
Current International
Class: |
F21l 009/00 () |
Field of
Search: |
;240/10.65,10.63,10.67,10.68,1.6R |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Braun; Fred L.
Attorney, Agent or Firm: Kollin; Jacob L.
Claims
What is claimed is:
1. In combination, a flashlight housing having a pair of side
walls, a pair of end walls, a bottom wall and a head cover, a flat
battery and a light bulb, said pair of side walls and one of said
end walls having cutout portions for insertion of said battery
without removing said head cover, said electric bulb having a cap
terminal and a central terminal, said central terminal being in
constant contact with one terminal of the battery, a clamp for
holding said cap terminal, and a strip having a folded end operable
by a push button for contacting the other terminal of said battery
with said clamp, said bottom wall comprising a central longitudinal
projection along its internal surface frictionally engaging said
battery to secure the battery in the housing.
Description
This invention relates to a torch case for a pocket torch with flat
shaped battery and its object is to provide a pocket torch which is
economical to manufacture, simple to asemble and reliable in
operation.
It appeared advantageous according to the invention to create a
torch case for a pocket torch with flat shaped battery, which case
would have no cover and into which the battery could be inserted
without handling its terminals.
A torch case according to the invention is characterised in that it
has an opening at the side through which the battery can be placed
in its operative position and in that it contains in its upper part
a plate which is designed to provide contact between one of the
terminals of the battery and the cap of a bulb which is mounted in
the said upper part in such a manner that its contact terminal is
in direct and constant contact with the other terminal of the
battery.
According to the invention, the plate is held by one of its folded
ends against the cap of the bulb which is mounted in its seating
while the other folded end of the plate is adapted to be operated
on by a switch to bring it into contact with the appropriate
terminal of the battery.
To explain the invention more clearly, it will now be described
with reference to the attached drawing which is given solely by way
of example and which shows a side view of the case of a pocket
torch equipped with flat shaped battery and constructed in
accordance with the invention.
The torch case 1, which is preferably made of plastics, has a
lateral opening 2 which partly extends over the two surfaces of the
case at 2'. This opening allows for easy insertion and removal of a
flat shaped battery 3 into and from the case.
The base 4 of the case has a central longitudinal projection 5
along its internal surface to secure the battery in the case.
The head cover or top 6 of the case has a clamp or seating 7 for a
bulb 8 whose central contact terminal 8' is in constant contact
with one of the terminals 9 of the battery, and it contains a very
simple mechanism for contact. This mechanism consists of a single
plate or strip 10 which is kept in position by one of its folded
ends 10' bearing against the tapped cap 8" of the bulb while its
other folded end 10" is subject to the action of a sliding switch
11.
When the switch 11 is pushed down, it pushes against the end 10" of
the plate 10 which then comes into contact with the other terminal
9' of the battery to close the circuit so that the bulb lights up.
This switch can be moved downwards into two positions, the first of
which is unstable due to the elasticity of the plate while the
second is fixed by abutments formed on slide bars and holding the
switch.
The seating 7 for the bulb is not tapped, the bulb being simply
pressed into the seating where it is firmly held by its contact
with the folded end 10' of the plate 10.
Such a design greatly simplifies the manufacture and assembly of
the torch case. Another advantage of this design is that the
battery can be placed into position and is immediately ready for
operation without any handling of its terminals.
It should be understood that one or other construction modification
within the scope of the claims may be applied to the case described
and represented without thereby departing from the field of the
invention.
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