Shade for telescopic sight

A glare shade for a rifle scope that may be manually removably mounted and is comprised of extensible sections containing light admitting apertures.

BACKGROUND OF THE INVENTION 
Telescopic sights are now quite generally used by hunters and in most 
situations are an excellent aid to proper shooting. However, in early 
morning and late afternoons the sun may be at such an angle as to cause a 
glare in the telescopic sights of the rifle so it may be virtually 
impossible to see the exact spot necessary for the hunter to see. Also, a 
slight fog or haze may make visibility through the rifle scope less than 
desired. 
This invention is directed toward providing an easily mounted adjustable 
shade to allow proper visibility through the telescopic sight of the rifle 
even when aiming in the direction of the sun. Briefly the invention 
comprises three open cylindrical tubes that slide into each other with a 
slotted end on the smaller of these cylindrical tubes. This slotted end 
allows the "fingers" between the slots to be easily compressed or expanded 
so that this end may be easily clamped on the outer end of the telescopic 
sight. The shade then may be extended to two sections or three sections 
length. Now each section contains a multiplicity of rectangular openings 
so that non-direct light is admitted into the open tube shade. These 
rectangular openings are aligned transverse to the longer axis of the 
shade. 
In one embodiment each section of the shade is tapered and near the larger 
end of the first and second sections there is a groove on the outer 
periphery. At the smaller end of the second and third sections there is a 
circular protrusion on the inner periphery so that the shade may be pushed 
together to be approximately the length of the first section or extended 
and snapped together to be the length of two sections or extended to the 
full three section length with the third section snapping into the second 
section while the second section snaps into the first section. Sections 
may be rotated to allow optimum admission of light. A semi-rigid plastic 
with a white interior and dull exterior is the preferred material of 
manufacture. With the shade as described the hunter may extend the shade 
full length and shoot in the direction of the sun. Use has shown that 
visibility is also improved using the shade when there is a mist or haze 
that is caused by the sun shining on fine water droplets. 
We have described a unique shade but minor changes could be made without 
changing its function. We therefore do not wish to be limited to exact 
details but only as to the spirit and purpose as covered in these claims 
and specifications. 
BRIEF STATEMENT OF THE INVENTION 
The invention comprises a telescoping three part shade with apertures in 
each part to admit light. In one embodiment the shade has slots in the 
smaller end so that the "fingers" formed by the slots are easily 
compressible and the shade then may be fastened on the rifle scope by 
using a compression type clamp similar to a normal hose clamp. A thumb 
screw type tightener would be used. 
The three parts of the shade may be tapered and made with a circular 
depression and matching protrusions so that the shade may be collapsed to 
one third the maximum length or extended to two-thirds the maximum length 
and snapped in place or fully extended and snapped in place. Each portion 
may be rotated to secure optimum admission of light. 
In another embodiment each section fits closely into the other and an O 
ring mounted on the beginning section and another O ring on the second 
section provides sufficient friction that the shade may be smoothly 
extended from on third the maximum length to the full length. There are 
"stops" provided so that the sections will not easily pull apart. This 
embodiment may also be mounted, using compressible fingers and a friction 
clamp. 
In either embodiments a stretcheable band around the "fingers" may be used 
so that mounting may be accomplished by simply pushing the shade over the 
end of the scope. 
In still other embodiments the collapsable segments may simply be a 
non-galling material and may be so sized as to hold in position by 
friction alone.

DETAILED DESCRIPTION OF THE DRAWINGS 
In FIG. 1 we've shown a first embodiment of the invention where the first 
section 1 may be telescoped into the second section 2 and the second 
section 2 may be telescoped into the third section 3. A raised circular 
protrusion 7 for the first section 1 snaps into a collar 6 on the second 
section 2 and a similar raised circular protrusion 7 on section 2 snaps 
into a similar collar 6 on section 3 when the shade is fully extended. 
Rectangular light admitting apertures 5 are in all three sections. 
Compressible fingers 4 are used for mounting the shade to the rifle scope. 
In FIG. 2 we show a normal hose type friction compression ring clamp 8 
(with a thumbscrew actuator 9) used to slip over compressible fingers 4, 
FIG. 1 to mount the shade securely on a rifle scope. 
In FIG. 3 we show another embodiment wherein compressible segments 13 on a 
beginning end of a first section 10 allow clamping to a rifle scope; the 
first section 10 also containing rectangular apertures 19, an O ring 15 
fitted in a groove and rounded indentations 16 to allow a rounded tip 
spring loaded catch 14 to hold the first section 10 from slipping out of 
the second section 11. In a similar manner the second section 11 contains 
rectangular apertures 19 and rounded indentations 16 to allow a second 
spring loaded catch 14 on the beginning end of a third section 12 to 
prevent the second section 11 from slipping out of the third section 12. 
The second section also contains a second O ring 15 to increase friction 
betwen the sections so that sections 10, 11, and 12 will hold in a 
partially collapsed position. 
FIG. 4 shows a strong elastic band 20 that is smaller than the 
circumference of section 1, FIG. 1 or section 10, FIG. 3 and may be used 
to compress the ends of either embodiment to hold firmly but releaseably 
on a rifle scope.