U.S. patent application number 11/756975 was filed with the patent office on 2008-12-04 for collapsible slingshot bow.
Invention is credited to Randy Edwards.
Application Number | 20080295816 11/756975 |
Document ID | / |
Family ID | 40086753 |
Filed Date | 2008-12-04 |
United States Patent
Application |
20080295816 |
Kind Code |
A1 |
Edwards; Randy |
December 4, 2008 |
COLLAPSIBLE SLINGSHOT BOW
Abstract
A collapsible slingshot bow for firing an arrow has a head
comprising a first U-shaped member including a central post and a
pair of arms extending laterally of, and from, the post, the arms
terminating in free end portions that extend rearwardly of the
post. One end of the post opposite the arms includes a connector,
and the head includes a bow string for engaging and launching the
arrow. A handle is formed as an elongated handgrip portion having
another connector at one end for engagement with connector on the
post. An arm support includes a second U-shaped member attached to
the handgrip portion via a releasable connector carried by the arm
support. A flexible strap having a nock-engaging portion spans the
length between the ends of the pair of arms. In using the bow, an
archer inserts one of his hands between the ends of the U-shaped
member so that his forearm is positioned below the strap; he then
grasps the handgrip portion of the handle with the inserted hand
thereby securely holding the bow in a fixed position while
supporting the bow against his arm so that he can load and launch
an arrow with his other hand.
Inventors: |
Edwards; Randy; (Hooks,
TX) |
Correspondence
Address: |
CHAN LAW GROUP LC
1055 W. 7TH ST,, SUITE 1880
LOS ANGELES
CA
90017
US
|
Family ID: |
40086753 |
Appl. No.: |
11/756975 |
Filed: |
June 1, 2007 |
Current U.S.
Class: |
124/20.3 ;
29/433 |
Current CPC
Class: |
F41B 3/02 20130101; Y10T
29/49838 20150115 |
Class at
Publication: |
124/20.3 ;
29/433 |
International
Class: |
F41F 7/00 20060101
F41F007/00 |
Claims
1. A collapsible sling bow for firing arrows, comprising: a head
comprising a first U-shaped member including a central post and a
pair of arms extending laterally of, and from, the post, said arms
terminating in free end portions that extend rearwardly of the
post, one end of said post opposite the arms including connection
means, said head further including bow string means for engaging
and launching the arrow, a handle comprising an elongated handgrip
portion having connection means at a first end for detachable
engagement with the post connection means, and an arm support
comprising a second U-shaped member detachably attached to the
handgrip portion via releasable connection means carried by the arm
support and cooperating with the connection means of said handle,
and a flexible strap spanning the ends of the U-shaped member,
whereby in using the bow, an archer inserts one of his hands
between the ends of the U-shaped member toward the handgrip so that
his forearm is positioned below the strap, and then he grasps the
handgrip portion of the handle with that one hand to securely hold
the bow in a fixed position while supporting the bow against his
arm so that he can load and launch an arrow with his other
hand.
2. The sling bow of claim 1, wherein said bow string means
comprises a power band made of a length of elastic material
attached to, and spanning, the free end portions of said arms, said
length of elastic material having attached thereto a nock-engaging
loop located substantially centrally of the distance between said
free end portions.
3. The collapsible sling bow of claim 2, wherein said arms emanate
from said post to define a V-shaped notch against which the shaft
of an arrow rests while the arrow is being loaded and launched.
4. The collapsible sling bow of claim 3, and further including a
guide element overlying said notch, said guide element having
opposing ends, each of said ends being secured to a respective arm
adjacent to said notch.
5. The collapsible sling bow of claim 1, wherein said handle
further includes a cushion element surrounding a major portion of
the length of the handgrip portion.
6. The collapsible sling bow of claim 1, and further including
tubing segments secured to the free end portions of the arms, and
bundled bow strings attached to said tubing segments in such a
manner as to form a power band coupled to and spanning the distance
between said tubing segments, said power band having a
nock-engaging loop connected thereto.
7. The collapsible sling bow of claim 1, wherein the head can be
pivotably positioned relative to the handgrip to permit use of the
bow by either a right-hander or a left-hander merely by loosening
the connection means between the handle and the bow head,
repositioning the handle and bow head to a new relative position,
and tightening the connection means to secure the handle in the new
position relative to the bow head.
8. The collapsible sling bow of claim 7, wherein in either position
used by a right-hander or a left-hander the bow head is preferably
maintained in a horizontal orientation.
9. In a slingshot bow having opposed arms, a bowstring comprising:
a multistrand section of bowstring material having a central
substantially rigid twisted portion and end portions comprising
loops, and a pair of tubing segments having opposing ends, one end
of each segment being secured to a respective one of the arms of
said bow and the other end of each segment being secured to a
respective one of the loops of said multi-strand bowstring, said
bowstring extending between said bow arms and defining a power band
for launching projectiles from said bow.
10. The slingshot bow of claim 9, and further including a loop of
material secured substantially centrally of said central portion,
and defining a nock-engaging element.
11. The bow of claim 10, wherein the end of each tubing segment
comprises a double-walled portion having a short length of tubing
folded into the bore of the tubing, and further wherein each said
loop of said bowstring extends radially through both walls of said
double walled portion of tubing and is secured on the outside of
said tubing.
12. A method of forming a power band for attachment to a slingshot
bow having opposing arms, said method comprising: providing a
finite length of a multi-strand bowstring having a central portion
located between and interconnecting opposing loop portions;
attaching one loop portion of the bowstring to a first segment of
tubing; attaching the other loop portion to a second segment of
tubing; and securing each of the first and second segments of
tubing to a respective one of each arm of the bow.
13. The method of claim 12, wherein said step of attaching one loop
portion to the first segment of tubing comprises (a) separating
each loop portion into two sub-loops, (b) attaching each sub-loop
to a needle-like instrument, (c) inserting the needle-like
instrument longitudinally into the end of the tubing, (d) radially
piercing the wall of the tubing with the needle-like instrument,
(e) drawing each sub-loop with the needle-like instrument radially
through and out of the tubing, (f) detaching each sub-loop from the
needle-like instrument; (g) wrapping the sub-loop over the central
portion of the bowstring extending out of the tubing and over the
tubing end, and (h) exerting a longitudinal pulling force on the
central portion to tightly secure the sub-loop circumferentially
about and in encircling engagement with the tubing end.
14. The method of claim 13, wherein said step of attaching the
other loop portion to the second segment of tubing comprises (a)
separating each loop portion into two sub-loops, (b) attaching each
sub-loop to a needle-like instrument, (c) inserting the needle-like
instrument longitudinally into the end of the tubing, (d) radially
piercing the wall of the tubing with the needle-like instrument,
(e) drawing each sub-loop with the needle-like instrument radially
through the tubing wall and out of the tubing, (f) detaching the
sub-loop from the needle-like instrument; (g) wrapping the sub-loop
over the central portion of the bowstring extending out of the
tubing and over the tubing end, and (h) exerting a longitudinal
pulling force on the central portion to tightly secure the sub-loop
circumferentially about and in encircling engagement with the
tubing end.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a hand-held bow configured
as a sling shot for launching arrows and the like. In comparison to
a conventional bow for propelling arrows, a significant advantage
of the present slingshot bow is its smallness in size and its being
easily and conveniently carried.
BACKGROUD OF THE INVENTION
[0002] Prior inventions support the notion that smaller bows are
inherently advantageous. Various features contribute to the
versatility of smaller bows including simplicity of construction,
substantial reduction in weight, ease and economy of transport, and
ease of use, especially by either a "lefty" (one who uses his/her
left arm, hand, leg or foot) or a "righty" (one who uses or favors
his right arm, hand, leg or foot) without significant
modification.
[0003] One example of a known device exhibiting some of these
features is the invention disclosed in U.S. Pat. No. 3,018,770 to
Saunders for a "SLING SHOT". The Saunders patent discloses a sling
bow having an arm rest for steadying the bow when the sling is
stretched, and an arm brace 2 for supporting the bow on the
shooter's arm. In Saunders, the elastic "power links" D are formed
from tubes of rubber.
[0004] Another noteworthy invention is that disclosed in U.S. Pat.
No. 3,728,996 to Miller. In the Miller patent there is disclosed a
sling shot for discharging an arrow that includes a Y-shaped
hand-held support having a displaceable sight rod for accurately
aiming an arrow that is propelled by elastic band members.
[0005] Still another invention of note is that disclosed in U.S.
Pat. No. 7,059,314 to Teague. In the Teague patent, there is shown
a sling bow having a flat elongated handle and a Y-shaped end with
an off-center quarter circle shaped notch against the side of which
the shaft of a conventional arrow rests before it is launched by
elastic straps secured in slots cut into the Y-shaped end on
opposite sides of the notch.
[0006] Each of the above-mentioned patents has drawbacks,
especially with respect to adjustability, reliability and accuracy
of shooting. For example, the bow in the Saunders patent must be
disassembled from one configuration suitable for shooting by a
left-hander and then reassembled into a different configuration
that is suitable for shooting by a right-hander. All of the
foregoing patents suffer from the difficulty associated with
maintaining accuracy of the projectile trajectory, inasmuch as the
arrow rests of the patented devices will not move out of the flight
path of the projectile until it is struck by the projectile. This
potentially then diverts the projectile from its intended flight
path. Further, neither Teague nor Miller provide an arm rest to
maintain the bow in a steady position while stretching and then
releasing the power bands.
[0007] There is therefore a great and long-felt need for a sling
bow which is light weight, not cumbersome in construction, easy to
store and transport, inexpensive and simple in design.
SUMMARY OF THE INVENTION
[0008] The present invention provides a sling bow that is simple in
construction, light in weight, easy to store and transport, and can
be used without modification by a "lefty" or a "righty".
[0009] In one aspect of the invention, a compact, hand-held sling
bow includes a horizontal head portion, a handle portion, and a
support portion in which the relative angle between the handle
portion and the head portion can be adjusted relative to one
another such that the power band supported by the head portion can
retain its horizontal orientation regardless of whether the bow is
used by a "lefty" or a "righty".
[0010] In another aspect of the invention, the support portion
includes a U-shaped length of flexible strap for snuggly engaging
the forearm of a user of the bow to steady the bow during its
use.
[0011] In yet another aspect of the invention, the horizontal head
portion is fashioned into a U-shaped element between the ends of
which is an elastic band designed to engage one end of an elongated
projectile while the band is drawn away from the U-shaped element
and then released in a direction back toward the U-shaped element
so that the projectile can be propelled forwardly with greater
speed than the speeds generated by sling bow constructions
currently known in the art.
[0012] In still another aspect of the present invention, the
material used for the elastic strap and its manner of attachment to
the head portion enables a projectile to be propelled forwardly at
speeds greater than the speeds achieved by conventional sling bow
devices using similar elastic bands.
[0013] In still another aspect of the present invention, the
elastic strap of the sling bow functions as the power producing
mechanism for propelling the projectile, and there is no tuning or
adjustment of the draw length required.
[0014] The present invention achieves these objectives and others
not stated above through its simplicity of construction,
configuration and use. The sling bow of the present invention
comprises a three-part construction of a bow head, a bow handle,
and a bow support. The bow head is configured as a U-shaped support
having an elongated central post with a connection point formed at
one end portion and, at the opposite end portion, a first set of
arms extending laterally outwardly of, and upwardly from the
central post. Each arm of the first set of arms has a second arm
extending rearwardly from, and normal to, its respective first arm
with a power band connected to each second arm. The bow handle
comprises an elongated member supporting in surrounding manner a
grip member, such as a rubber or padded sleeve.
[0015] These and other features, aspects and advantages of the
invention will become readily apparent to those skilled in the art
from the following description and appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is a perspective view of the bow and power band of
the present invention;
[0017] FIG. 2 illustrates a bundle of bowstring used in forming the
power band of the present invention;
[0018] FIG. 3 is a side view of one end of the tubing used secured
to one of the bow arms of the invention;
[0019] FIG. 4 is an end view of the tubing shown in FIG. 3;
[0020] FIG. 5 shows the bowstring bundle after performing a step in
one method for forming the power band of the invention;
[0021] FIG. 6 shows the bowstring bundle in relation to the tubing
end shown in FIG. 3 after performing another sequential step in the
method of the invention;
[0022] FIG. 7 shows the bowstring bundle in relation to the tubing
end shown in FIG. 3 after performing yet another sequential step in
the method of the invention;
[0023] FIG. 8 shows a fourth step in the method of forming the
power band of the invention;
[0024] FIG. 9 shows the power band of the invention after
completing the formation method.
DETAILED DESCRIPTION OF THE INVENTION
[0025] Referring first to FIG. 1, the sling bow 100 of the present
invention is seen to include a bow head 10, a bow handle 30, and a
bow arm support 40. It is contemplated that a projectile (not
shown), such as a conventional arrow, will be used with the bow of
the invention. Such a projectile would include a nock at the end of
a shaft that would engage the power band 70 at a nock-engagement
portion 85, and would be propelled forwardly of the bow head when
the power band is released.
[0026] The bow head 10 includes a frame having central support post
12, and a pair of arms 14a, 14b extending substantially laterally
of the central post 12. The end of each arm includes a first short
segment 16a, 16b extending substantially normal to a respective arm
14a, 14b. The arm first segments are arranged substantially
parallel with one another. The arms, the arm first segments, and
the central post together define a substantially planar head
portion. At the free end of each first short segment 16a, 16b is a
second short segment 17a, 17b extending away from the substantially
planar portion in a rearward direction (i.e., toward the user) and
generally toward one another. Attached to and encompassing end
portions of each of the arms, and preferably including the first
and second segments, are first and second sections of tubing 19a,
19b. Preferably, the first and second sections of tubing are made
from a strong rubber material having a high degree of strength,
elasticity, and resilience, such as surgical rubber or other like
material exhibiting similar properties.
[0027] The bow handle 30 comprises an elongated handle member 32
having connection points 34a, 34b at opposite end regions for
connecting the handle member between the central support post 12 of
the bow head 10 and the bow arm support 40. The connection is
maintained by a releasable connector assembly, such as a bolt and
nut, and can be loosened to allow rotation or pivoting of the bow
head relative to the bow handle, or the bow handle relative to the
arm support, prior to tightening the connector to secure the two
parts to one another thereby preventing further relative pivoting
motion. The present invention also contemplates loosening and
removing the connectors to permit all three of the parts to be
disassembled for storage or to facilitate transport. Encircling a
central region of the handle member 32 is a cushioning sleeve 36.
The cushioning sleeve is resilient enough to allows a shooter's
hand to snuggly and securely grasp the bow handle 30 while loading,
aiming, and "firing" or launching a projectile.
[0028] The arm support 40 of the bow includes a U-shaped member 42
having a flexible strap 44 secured at, and spanning, the free ends
46a, 46b of the "U". The length of the strap is slightly greater
than the distance between the free ends so as to permit a snug fit
between the user's arm and the underside of the strap when the user
inserts his hand between the arms of the U-shaped member and grasps
the sleeve 36 of the handle member. The strap 44 can be braided as
shown in FIG. 1, or it can be flat and without surface texture,
such as a belt or strap. Preferably the strap will be of sufficient
thickness to prevent its breakage under nearly all circumstances
associated with its use. Member 42 is releasably pivoted to
handgrip 30 via a bracket 43.
[0029] The arms 14a and 14b of the bow head are seen to originate
at the upwardmost area of the central post and extend upwardly and
laterally therefrom in such a manner as to form, with the central
post, a V-shaped crook 21, which functions to support the forward
portion of an arrow's shaft prior to its being fired. Guide 23,
comprising a length of substantially rigid or taut cord having its
ends tightly secured to portions of the arms adjacent opposite
sides of the crook 21, is provided to overly the forward portion of
the arrow shaft to keep the arrow shaft securely positioned on the
crook 21 while the power strap is being tensioned in readiment for
launching the arrow. The guide 23 also facilitates accurate aiming
of the arrow, during arming of the bow and launching of the arrow
by maintaining the arrow shaft in the crook.
[0030] FIGS. 2-9 are a series of illustrations showing one process
for forming the power band 70. This process contemplates following
a sequence of steps that will yield the power band for the bow of
the present invention. A first step is to form the bundle 72 of
bowstrings as shown in FIG. 2 by repeatedly winding multiple
strands of bow string into a loop and then twisting the loop about
a central section 74 to yield end loops 73a and 73b. By performing
the process described below, the bundle 72 will be transformed into
the power band 70 seen in FIG. 1 with the central section 74
providing an engagement area for a nock engaging loop 110. The
thus-formed power band will span the ends of the tubing attached to
the arms of the bow head 10 (note FIG. 1).
[0031] The second step of the process contemplated by the present
invention, and best understood with reference to FIGS. 3 and 4,
entails selecting a region of tubing, having a length of about 3/4
of an inch measured from the free end of the tubing, and folding
the region back upon the remainder of the length of tubing while
pushing it inside the tubing (thus forming a "folded under" section
of tubing) to create a doubled-thickness wall section D of
significantly increased strength due to the two thicknesses of
material (one within the other) through and to which the bowstring
72 will be secured. FIG. 4 shows the "folded under" end of the
tubing looking at the end of the tubing from outside the end.
[0032] In the third step of the process, as best illustrated in
FIG. 5, one end loop 73b of the bowstring bundle 72 is separated
into two substantially equal sub-loop portions 73b1 and 73b2, each
originating from the same side of the central section. In the third
step of the process, each end-loop portion is, with the aid of a
needle-like instrument such as a needle or awl (not shown),
threaded radially through both layers at opposing sides of the
"folded under" wall section D of the tubing end.
[0033] The fourth step of the process of the invention entails
radially pulling each of the respective bundle sub-loop portions
through the tubing segment at D in the manner shown in FIG. 6.
[0034] In the fifth step of the process, best illustrated in FIG. 7
of the drawings, each protruding sub-loop portion 73b1 and 73b2 is
then looped over the end of the tubing segment toward the
oppositely disposed one of the other sub-loop portion while
encircling the central section 74 of the bowstring bundle 72 now
extending from within, and parallel to, the tubing bore. That is,
in effecting this fifth step, the central section 74 of the
bowstring bundle that extends longitudinally from within the tubing
bore also extends through the two sub-loops 73b1 and 73b2.
[0035] In the sixth step of the process, the central portion 74 is
grasped and pulled tightly in a longitudinal direction away from
the tubing end to thereby cause the bundle sub-loop portions to
contract around, and be tightly secured circumferentially against,
the outer surface of the end of the wall section D of the tubing
(see FIG. 8).
[0036] In the seventh sixth step of the process, each of the
preceding steps (the first through sixth steps) of the process are
again performed on the second end loop 73a of the bowstring bundle
relative to the other, second, segment of tubing attached to the
other arm of the bow head 10. When completed, the facing ends of
the tubing will be connected together to form the power band 70, as
shown in FIG. 9. In this step of the process, a loop of material,
preferably in the form of a strap 110, is secured to the
mid-section of the power band 70
[0037] The configuration of the bow frame, and the use of rubber
tubing possessing superior structural and functional properties,
such as surgical rubber tubing, as the elastic power band for the
bow, results in enhanced stretching and strength properties, in
substantially greater flight speeds for the projectiles than are
achieved with conventional bows and bow strings, in a novel bow
construction that will permit quick and repeated loading and
launching of arrows, and in a bow that can be used over and over
without fear of breakage or damage. In addition, because the bow
head 10, grip portion 30 and arm support portion 40 are able to be
separated, the bow of the invention can be carried with great ease
to a location where it can be quickly assembled, used, and then as
quickly disassembled. The economic and related environmental
advantages of the instant invention are thus self evident.
[0038] It will be apparent that the invention is not limited to the
embodiments described above and that variations and modifications
may be made thereto within the scope of the invention.
* * * * *