US3744473A - Composite archery bow with bow limb tension control device - Google Patents

Composite archery bow with bow limb tension control device Download PDF

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US3744473A
US3744473A US3744473DA US3744473A US 3744473 A US3744473 A US 3744473A US 3744473D A US3744473D A US 3744473DA US 3744473 A US3744473 A US 3744473A
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bow
middle portion
arms
tension
springs
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J Nishioka
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J Nishioka
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41BWEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B5/00Bows; Crossbows
    • F41B5/0094Non-traditional bows, e.g. having hinged limbs or non-stave geometry

Abstract

An archery bow is composed of a rigid middle portion having a pair of rotatable members supported at equal distances from the center thereof, a pair of bow arms connected to the rotatable members respectively and extending from the ends of the rigid middle portion, with the bowstring extending between the outer end of the arms, means interconnecting the rotatable members causing them to rotate in unison and in opposite directions for equalizing the movement of the bow arms, and resilient tension means controlling the rotation of the rotatable members and the movement of the arms.

Description

United States Patent 1191 Nishioka 1111 3,744,473 1 July 10, 1973 COMPOSITE ARCHERY BOW WITII BOW LIMB TENSION CONTROL DEVICE lnventor: Jim Z. Nishioka, 1268 Hemlock St.,

N.W., Salem, Oreg. 97304 Filed: Oct. 26,1971

Appl. No.: 192,092

Related US. Application Data Continuation-in-part of Ser. No. 99,966, Dec. 21, 1970, abandoned.

US. Cl. 124/24, 124/30 R Int. Cl. F4lb 5/00 Field of Search 124/30 R, 24, 23,

References Cited I UNITED STATES PATENTS 7/1971 Storer l24/3OA 1/1971 Van Hecke 124/24 2,307,021 1/1943 Cordrey et al 124/23 Primary Examiner-Richard C. Pinkham Assistant ExaminerWilliam R. Brown Attorney-'L. R. Geisler [57] ABSTRACT An archery bow is composed of a rigid middle'portion having a pair of rotatable members supported at equal distances from the center thereof, a pair of bow arms connected to the rotatable members respectively and extending from the ends of the rigid middle portion, with the bowstring extending between the outer end of the arms, means interconnecting the rotatable members causing them to rotate in unison andin opposite directions for equalizing the movement of the bow arms, and resilient tension means controlling the rotation of the rotatable members and the movement of the arms.

6 Claims, 9 Drawing Figures PATENIE JUL 1 0 I973 SHEEIHfz PAIENIEDJUL 10 I973 SHEH 2 0f 2 FIG. 8

FIG. 6

BACKGROUND OT THE INVENTION With archery bows of various types, and especially with heavy hunting bows, it is possible to produce unequal tension at the two ends of the bow arms to which the bowstring is attached as the bowstring is drawn. In other words, with the drawing of the bowstring it is possible to have one end of the bow move to a greater extent than the other and exert greater tension at that end of the bowstring, temporarily producing an unbalanced bow influencing the accuracy imparted to thearrow. Although many means have been devised for increasing the tension imposed on the bowstring when it is drawn, and thereby increasing the impetus or force with which the arrow is discharged from the bow, it is still possible with these modified bows, as with an ordinary bow,to

handle the bow in such manner as to have greater ten- SUMMARY OF rm; INVENTION The composite bow of the present invention is formed with a rigid middle portion and a pair of bow arms hingedly connected with the respective ends of the middle portion. Tension for the bow, and thus for the bowstring extending between the outer ends of the arms, is provided by equalized cooperating tensionproducing means on the inner ends of the arms and on the adjacent end sections of the rigid center portion of the bow. Also, the arms are secured to a pair of wheel- Iike members respectively which are rotatably mounted on the rigid middle portion and are interconnected by cords or similarflexible means so arranged as to require the wheel-like members, and therewith the arms which are secured to the members, always to move in unison but in opposite directions. Thus, as the bowstring is drawn, causing the outer ends of the bow arms to be pulled inwardly toward each other against the force of their respective tension-producing means, the

fact that each arm moves the same distance as the other results in the bow beingalways in controlled condition.

'BRIEF DESCRIPTION OF THE DRAWING In the drawings:

FIG. 1 is a side elevation of the bow assembly with a portion broken away and shown in section, the normal position of the members of the assembly being shown in full line and the position of these members when the bow is in drawn position being shown in broken lines;

FIG. 2 .is a foreshortened, partial elevation taken from the forward side of the bow and a partial section, both taken along the line indicated at 2-2 in FIG. 1, and drawn to a larger scale;

' FIG. 3 is a fragmentary sectional elevation taken on the line 3-3 of FIG. 2;

FIG. 4 is a fragmentary elevation of one end of the bow assembly showing a modified means for mounting each of the bow arms;

FIG. 5 is a section taken on line 55 of FIG. 4, drawn to a larger scale;

FIG. 6 is a fragmentary elevation on line 66 of FIG.

4, drawn to the same scale as FIG. 5;

FIG. 7. is a foreshortened elevation of one of the ten sion spring membersof FIGS. 1 and 4, drawn to a larger scale;

FIG. 8 is a fragmentary side elevation of one end of the bow assembly, similar in part to FIG. 1, but with the 4 addition of toggle linkage between the rigid middle portion and the bow arm, and with the tension spring member connected to the toggle linkage instead of being connected directly to the bow arm, the normal position of the members being shown in full lines and the'position of the members when the bow is in drawn position being shown in broken lines; and

' FIG. 9 is a fragmentary side elevation of one end of the bow assembly showing the tension spring member mounted at the rear side of the bow and connected by linkage to the respective bow arm.

Referring first to FIGS. 1, 2 and 3, the bow assembly includes a rigid middle portion, designated in general by the reference 10, and a pair of bow arms 11 and 12 hingedly mounted at the opposite ends of the middle portion respectively. The middle portion may be formed of wood, aluminum or other suitable rigid material, and is provided with a channel 13 (see FIG. 2) extending longitudinally along the forward or convex side of the middle portion from one end to the other andat one side of the longitudinal center line. The ends of the middle portion 10 are bifurcated and the inner ends of the bow arms 11 and 12 are hingedly mounted on the stub shafts l4 and 15 respectively which extend vide a comfortable handhold near the center and with the customary alignment groove 16 on one face for the arrow shaft. The ends of the bowstring 17 are attached to the outer ends of the bow arms 11 and 12 respectively, the bow string thus being located on the rear side of the bow assembly as is customary.

The two bow arms 11 and 12 are identical though oppositely mounted. A pair of rotatable or wheel-like members 18 and 19 are secured to, or formed integral with, the inner ends of the arms 11 and 12 respectively and rotate with the arms. 11 and 12 on' the hinge shafts l4 and 15 extending through the bifurcated ends of the middle portion 10. The rotatable members 18 and 19 are in alignment with the longitudinal channel 13 of the middle portion '10. The peripheries of the rotatable or wheel-like members 18 and 19 are formed with a pair of grooves to accommodate a pair of cords 20 and 21 which extend from the members 18 and 19 in opposite directions and have their ends secured in the members respectively.

Thus the cord 20, having one end secured in a peripheral groove of the member 18 on the bow arm II, after passing partway around the periphery of the member 18 in clockwise direction (as viewed in FIG. 1), extends from the member 18 along in the channel 13, passing over a guide roller 20' in the channel 13, to'the member 19 on the arm 12, and then passes partway around the periphery of the member 19 in counterclockwise direction (as viewed in FIG. 1). As a result of this cord connection between the rotatable members 18 and 19 and the bow arms to which they are connected, it will.be evident that a swing of the arm 11 in counter-clockwise direction (as viewed in FIG. 1) will result in an equal and-corresponding swing of the arm 12 in the opposite or clockwise direction. The ends of the cord 20 are secured respectively to the two members l8 and 19 by any suitable means, such as a set screw, one of which is shown at 22 in FIGS. 2 and 3. The cord 20 carries a suitable means, such as a turnbuckle, for adjusting any slack which may develop in the cord.

Similarly a second cord 21, having one end secured on the member 18, passes around the other peripheral groove of the member 18 in counterclockwise direction (as viewed in FIG. 1), extends from member 18 along in the channel 13 and over a guide roller (indicated at 21') and passes around member 19 in counterclockwise direction, having its other end secured in the corresponding peripheral groove on the member 19. Thus, due to the connecting cord 21, a swing of the arm 11 in clockwise direction (as viewed in FIG. 1) will result in the corresponding equal swing of the arm 12 in the opposite or counter-clockwise direction. This cord 21 similarly carries a turnbuckle for adjusting any slack which may develop in the cord. Consequently the two hinged bow arms 11 and 12 are so connected through their respective members 19 and 19 and the cords 20 and 21 that they move in unison in opposite directions. This is a very important feature in the composite bow assembly.

In order to limit the swinging of the bow arms between the fully-drawn bow position and the normal inactive position, the inner end of each bow arm is formed with a pair of suitably spaced peripheral ears 23 and 24 (FIGS. 1 and 3) which engage a cross pin 25 in the corresponding end section of the middle portion 10 at the limit of the inward and outward swing respectively.

Adjustable tension means is provided for resisting the swinging of the bow arms 11 and 12 inwardly towards each other and thus to provide the desired tension on the bowstring, the tension being applied to the bowstring from the outer ends of the arms 11 and 12. In the composite bow construction as shown in FIG. 1, a pair of resilient tensioning springs 26 and 27 have their inner ends secured to the forward or convex side of the rigid middle portion 10 in the locations shown and extend obliquely forwardly in opposite directions in the same plane with the middle portion and the bow arms. The outer ends of these springs 26 and 27 are each connected by a cord 28, or similar suitable means, to the bow arms 11 or 12. Each of the bow arms 11 and 12 is formed with a slot 29 (FIG. 2)the opposite walls of which have registering holes to accommodate a pin 30 on which the outer end of the cord 28 is secured for connecting the bow arm to its respective control spring. The fact that the position of the cross pin 30 can be adjusted in each bow arm enables the tension on the bow arm to be adjusted accordingly, as desired.

In the modification shown in FIGS. 4, and 6 the rotatable members 31 (FIG. 6) at each end of the rigid middle portion are wider and are formed with an outwardly-extending slotted bracket 32. Each bracket 32 is formed with a saddle 33 near its outer end and the inner end of the corresponding bow arm 34 is secured on the saddle of the slotted bracket.

A cord 36 has one end connected to the outer end of the tension spring for each arm and the other end of the cord 36 is connected to a cross pin 37 extending between a pair of registering holes in the opposite walls of the slot in the bracket 32, the bracket being provided with a plurality of such registering holes to enable the cross pin 37 and cord and spring tension to be adjusted.

In the modified construction shown in FIG. 8, each bow arm 38, like the bow arms of FIG. 1, is pivotally mounted on the hinge shaft with the rotatable member. However, each bow arm is provided with an ear 39 on the rear side, and the corresponding end of the middle portion 10' of the bow assembly in this construction is provided with an ear 40. A pair of toggle links 41 and 42 are pivotally connected to the ears 39 and 40 respectively and are connected to each other by the pivot pin 43. Each bow arm 38 in this construction is slotted, like the bow arms of FIG. 1, but the cord 44 connected to the outer end of each tension spring passes entirely through the slot in the corresponding bow arm and has its end connected to the connection 43 joining the toggle links 41 and 42 instead of being connected directly to the bow arm. By making the toggle links longer the amount of movement of the tension spring with the swing of the bow arms in the drawing of the bow would be increased.

FIG. 9 illustrates a further modification in which the tension spring 45 for each bow arm is mounted on the rear face of the rigid middle portion 10 instead of'on the forward face. Each of the bow arms 46, like the bow arms in the construction previously described with reference to FIGS. 1 and 8, is pivoted on a hinge shaft with its rotatable member but the bow arms 46 are not formed with any longitudinal slot. An ear 47 on the rear side of each bow arm 46 provides a pivotal mounting for a link 48, the other end of which is pivotally connected with the outer end of the adjacent tension spring 45.

Other modifications in the construction would be possible without departing from the basic principle of having the bow arms and their spring tension controlled through the medium of the rotatable members mounted on the respective ends of the rigid middle portion and so connected as to move always in unison in opposite directions.

I claim:

1. A composite archery bow assembly comprising a rigid middle portion, a pair of rotatable members supported on each end of said middle portion respectively, a pair of bow arms fixedly connected to saidrotatable members, respectively, and extending from said end sections of said middle portion, a channel extending longitudinally the length of said middle portion, means passing along through said channel and interconnecting said rotatable members for causing said rotatable members to rotate in unison and in opposite directions, whereby to equalize the movements of said rotatable members and therewith of said arms, a bowstring extending between the outer free ends of said arms, tension means connecting said bow arms and said end sections of said middle portion for applying tension to resist the movement of said bow arms inwardlyrearwardly towards each other and said tensioning means further including springs fixedly connected to the respective opposite ends of the middle portion and engaging the bow arms.

2. The archery bow assembly of claim 1 comprising connected rotatable members is connected to one of said tension springs, said tension springs having their inner ends secured to the forward side of said rigid middle portion and extending obliquely forwardly in opposite directions from said middle portion, in the same plane with said middle portion and in opposite direction from said bow arms, and means connecting the outer free ends of said springs with said bow arms respectively.

3. The archery bow assembly of claim 2; with said means connecting the outer free ends of said springs with said bow arms being adjustably secured to said arms.

4. The archery bow assembly of claim 1 with the addition of toggle linkage connecting each of said bow arms with said rigid middle portion located on the rear side of the assembly, said tension assemblies comprising a tension spring for each bow arm, said tension springs having their inner ends secured to the forward side of said, rigid middle portion and extending obliquely forwardly in oppo-site directions from said middle portion in the same plane with said middle portion and said bow arms and in opposite directions from said bow arms, joining means connecting the outer free ends of said springs with said toggle linkage respectively and each of said bow arms being provided with a slot enabling said joining means to pass freely therethrough.

5. The archery bow assembly of claim 1 with a radially-extending bracket on each of said rotatable members extending out beyond the end of said rigid middle portion, said bow arms secured to said brackets respectively, and with said tension assemblies each tension spring is connected to a rotatable member and bow arm, said tension springs having their inner ends secured to the forward side of said rigid middle portion and extending obliquely forwardly in opposite directions from said middle portion in the same plane with said middle portion and said bow arms and in opposite direction from said bow arms, and means adjustably connecting the outer free ends of said springs with said brackets.

6. The archery bow assembly of claim 1 with tension spring connected to each bow arm, said tension springs having their inner ends secured to the rear face of said rigid portion and extending obliquely rearward in opposite directions from said middle portion inthe same plane with said middle portion and said bow arms, and linkage connecting the outer free ends of said tension springs with said bow arms respectively.

Claims (6)

1. A composite archery bow assembly comprising a rigid middle portion, a pair of rotatable members supported on each end of said middle portion respectively, a pair of bow arms fixedly connected to said rotatable members, respectively, and extending from said end sections of said middle portion, a channel extending longitudinally the length of said middle portion, means passing along through said channel and interconnecting said rotatable members for causing said rotatable members to rotate in unison and in opposite directions, whereby to equalize the movements of said rotatable members and therewith of said arms, a bowstring extending between the outer free ends of said arms, tension means connecting said bow arms and said end sections of said middle portion for applying tension to resist the movement of said bow arms inwardly-rearwardly towards each other and said tensioning means further including springs fixedly connected to the respective opposite ends of the middle portion and engaging the bow arms.
2. The archery bow assembly of claim 1 comprising connected rotatable members each connected to one of said tension springs, said tension springs having their inner ends secured to the forward side of said rigid middle portion and extending obliquely forwardly in opposite directions from said middle portion, in the same plane with said middle portion and in opposite direction from said bow arms, and means connecting the outer free ends of said springs with said bow arms respectively.
3. The archery bow assembly of claim 2; with said means connecting the outer free ends of said springs with said bow arms being adjustably secured to said arms.
4. The archery bow assembly of claim 1 with the addition of toggle linkage connecting each of said bow arms with said rigid middle portion located on the rear side of the assembly, said tension assemblies comprising a tension spring for each bow arm, said tension springs having their inner ends secured to the forward side of said rigid middle portion and extending obliquely forwardly in oppo-site directions from said middle portion in the same plane with said middle portion and said bow arms and in opposite directions from said bow arms, joining means connecting the outer free ends of said springs with said toggle linkage respectively and each of said bow arms being provided with a slot enabling said joining means to pass freely therethrough.
5. The archery bow assembly of claim 1 with a radially-extending bracket on each of said rotatable members extending out beyond the end of saId rigid middle portion, said bow arms secured to said brackets respectively, and with said tension assemblies each tension spring is connected to a rotatable member and bow arm, said tension springs having their inner ends secured to the forward side of said rigid middle portion and extending obliquely forwardly in opposite directions from said middle portion in the same plane with said middle portion and said bow arms and in opposite direction from said bow arms, and means adjustably connecting the outer free ends of said springs with said brackets.
6. The archery bow assembly of claim 1 with tension spring connected to each bow arm, said tension springs having their inner ends secured to the rear face of said rigid portion and extending obliquely rearward in opposite directions from said middle portion in the same plane with said middle portion and said bow arms, and linkage connecting the outer free ends of said tension springs with said bow arms respectively.
US3744473D 1971-10-26 1971-10-26 Composite archery bow with bow limb tension control device Expired - Lifetime US3744473A (en)

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841295A (en) * 1973-08-20 1974-10-15 Kudlacek D Compound archery bow
US3851638A (en) * 1973-02-02 1974-12-03 Kam Act Enterprises Inc Force multiplying type archery bow
US3854467A (en) * 1974-03-14 1974-12-17 Herters Inc Force multiplying type archery bow
US3923035A (en) * 1974-08-20 1975-12-02 George H Trotter Compound bow
US3958551A (en) * 1975-02-26 1976-05-25 Amf Incorporated Compound bow
US3981290A (en) * 1975-03-21 1976-09-21 Victor Comptometer Corporation Compound bow
US3989026A (en) * 1972-07-21 1976-11-02 Jim Zenji Nishioka Archery bow with balanced adjustable tension
US3990425A (en) * 1975-04-07 1976-11-09 Amf Incorporated Compound bow
US4041927A (en) * 1975-07-24 1977-08-16 House Robert M Van Archery bow with pivoted bow limbs having rotational synchronizer and adjustable draw force mechanisms
US4054118A (en) * 1976-01-26 1977-10-18 Mckee Arnold D Compound bow with torque eliminators and tension cable deflectors
US4078537A (en) * 1976-04-05 1978-03-14 Carella Richard F Weight reduction bow
US4169456A (en) * 1975-07-24 1979-10-02 House Robert M Van Short limb archery bow
US4178905A (en) * 1975-11-10 1979-12-18 Victor United, Inc. Compound bow adjustment and indicating mechanism
JPS5664300A (en) * 1979-10-18 1981-06-01 Makugaia Koorudoueru Jiyouzefu Western bow having axially turning rim at inermediate position
US4287867A (en) * 1980-02-25 1981-09-08 Victor United, Inc. Compound bow
US4368718A (en) * 1981-06-22 1983-01-18 Victor United, Inc. Compound bow with two-track lever cams
US4457288A (en) * 1982-08-24 1984-07-03 Ricord Michael R Cam lever compound bow
US4461267A (en) * 1982-07-27 1984-07-24 Kidde Reaction Products, Inc. Compound bow
US4803970A (en) * 1986-07-05 1989-02-14 Kernforschungeszentrum Karlsruhe G.M.B.H. Missile projecting device
US4989577A (en) * 1988-10-05 1991-02-05 Ray Bixby Power unit bow
US5150699A (en) * 1989-11-22 1992-09-29 Boissevain Mathew G Compound bow
US5205269A (en) * 1990-09-12 1993-04-27 Guzzetta Matthew P Toggle link power cell bow
US5280779A (en) * 1991-10-22 1994-01-25 Precision Shooting Equipment Inc. Archery bow having pivoting pocket for bow limb
US5353777A (en) * 1992-12-28 1994-10-11 Fincher Hollis W Compound bow with diminishing draw weight and quick take down features
US5373831A (en) * 1993-06-03 1994-12-20 Cushman; William B. Compound bow with high power and extreme let-off
US5651354A (en) * 1996-07-12 1997-07-29 La Haise, Sr.; Gerard A. Twin limb bow
US5934264A (en) * 1990-02-05 1999-08-10 Doornenbal; Johannes Recurve bow
US5996566A (en) * 1998-10-22 1999-12-07 Malan; Lee Archery bow
US20060070609A1 (en) * 2004-10-04 2006-04-06 Smith Steve C Compound bow
US20070256675A1 (en) * 2004-10-04 2007-11-08 Smith Steve C Compound bow
US20090032002A1 (en) * 2007-07-31 2009-02-05 Jrh Industries, Llc Device for propelling a projectile
US7740011B1 (en) * 2005-04-02 2010-06-22 Eckhard Bernardy Archery bow
US10408558B2 (en) 2017-07-18 2019-09-10 Bakke Invest As Crossbow having an energizer

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989026A (en) * 1972-07-21 1976-11-02 Jim Zenji Nishioka Archery bow with balanced adjustable tension
US3851638A (en) * 1973-02-02 1974-12-03 Kam Act Enterprises Inc Force multiplying type archery bow
US3841295A (en) * 1973-08-20 1974-10-15 Kudlacek D Compound archery bow
US3854467A (en) * 1974-03-14 1974-12-17 Herters Inc Force multiplying type archery bow
US3923035A (en) * 1974-08-20 1975-12-02 George H Trotter Compound bow
US3958551A (en) * 1975-02-26 1976-05-25 Amf Incorporated Compound bow
US3981290A (en) * 1975-03-21 1976-09-21 Victor Comptometer Corporation Compound bow
US3990425A (en) * 1975-04-07 1976-11-09 Amf Incorporated Compound bow
US4169456A (en) * 1975-07-24 1979-10-02 House Robert M Van Short limb archery bow
US4041927A (en) * 1975-07-24 1977-08-16 House Robert M Van Archery bow with pivoted bow limbs having rotational synchronizer and adjustable draw force mechanisms
US4178905A (en) * 1975-11-10 1979-12-18 Victor United, Inc. Compound bow adjustment and indicating mechanism
US4054118A (en) * 1976-01-26 1977-10-18 Mckee Arnold D Compound bow with torque eliminators and tension cable deflectors
US4078537A (en) * 1976-04-05 1978-03-14 Carella Richard F Weight reduction bow
JPS5664300A (en) * 1979-10-18 1981-06-01 Makugaia Koorudoueru Jiyouzefu Western bow having axially turning rim at inermediate position
JPS5741678B2 (en) * 1979-10-18 1982-09-04
US4287867A (en) * 1980-02-25 1981-09-08 Victor United, Inc. Compound bow
US4368718A (en) * 1981-06-22 1983-01-18 Victor United, Inc. Compound bow with two-track lever cams
US4461267A (en) * 1982-07-27 1984-07-24 Kidde Reaction Products, Inc. Compound bow
US4457288A (en) * 1982-08-24 1984-07-03 Ricord Michael R Cam lever compound bow
US4803970A (en) * 1986-07-05 1989-02-14 Kernforschungeszentrum Karlsruhe G.M.B.H. Missile projecting device
US4989577A (en) * 1988-10-05 1991-02-05 Ray Bixby Power unit bow
US5150699A (en) * 1989-11-22 1992-09-29 Boissevain Mathew G Compound bow
US5934264A (en) * 1990-02-05 1999-08-10 Doornenbal; Johannes Recurve bow
US5205269A (en) * 1990-09-12 1993-04-27 Guzzetta Matthew P Toggle link power cell bow
US5280779A (en) * 1991-10-22 1994-01-25 Precision Shooting Equipment Inc. Archery bow having pivoting pocket for bow limb
US5353777A (en) * 1992-12-28 1994-10-11 Fincher Hollis W Compound bow with diminishing draw weight and quick take down features
US5373831A (en) * 1993-06-03 1994-12-20 Cushman; William B. Compound bow with high power and extreme let-off
US5651354A (en) * 1996-07-12 1997-07-29 La Haise, Sr.; Gerard A. Twin limb bow
US5996566A (en) * 1998-10-22 1999-12-07 Malan; Lee Archery bow
US20070256675A1 (en) * 2004-10-04 2007-11-08 Smith Steve C Compound bow
US20060070609A1 (en) * 2004-10-04 2006-04-06 Smith Steve C Compound bow
US7373934B2 (en) 2004-10-04 2008-05-20 Smith Steve C Compound bow
US7762245B2 (en) * 2004-10-04 2010-07-27 Smith Steve C Compound bow
US7740011B1 (en) * 2005-04-02 2010-06-22 Eckhard Bernardy Archery bow
US20090032002A1 (en) * 2007-07-31 2009-02-05 Jrh Industries, Llc Device for propelling a projectile
US8136514B2 (en) * 2007-07-31 2012-03-20 Jrh Industries, Llc Device for propelling a projectile
US10408558B2 (en) 2017-07-18 2019-09-10 Bakke Invest As Crossbow having an energizer

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