For Stabilization Thereof Patents (Class 124/89)
  • Patent number: 5613484
    Abstract: The improved assembly includes an archery bow to which a connector and stabilizer sub-assembly are releasably secured. The sub-assembly features a connector having inner and outer concentric tubular sleeves with a spring therebetween biasing the outer sleeve toward an annular rim at the end of the inner sleeve which is adjacent to the stabilizer. Spaced bearings are disposed in an annular array in openings in the inner sleeve adjacent the end towards which the outer sleeve is biased. When the outer sleeve is retracted against the spring bias, the bearings can be moved into pockets defined in the outer sleeve by a nut on the free end of a bolt extending from one end of the stabilizer into the inner sleeve so that the nut can move past the bearings.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: March 25, 1997
    Assignee: Golden Key Futura, Inc.
    Inventor: Vincent Troncoso
  • Patent number: 5611325
    Abstract: An archery bow stabilizer is formed of at least three elongated stabilizer rods secured at their inner ends to a base member mounted detachably on the handle of an archery bow and extending forwardly of the bow handle in parallel, circumferentially spaced-apart arrangement. At least one tuning slide member has elongated openings therethrough, spaced apart to match the spacing of the stabilizer rods and having a larger diameter than the rods for freely receiving the rods therethrough. A set screw is threaded into a threaded bore in the tuning slide member, the bore communicating with each opening, and a resilient pad on the inner end of the set screw is arranged to engage the associated stabilizer rod to secure the turning slide member to the stabilizer rods intermediate the ends of the rods, the pads allowing the rods to vibrate in the enlarged openings.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: March 18, 1997
    Inventor: Donald S. Kudlacek
  • Patent number: 5595169
    Abstract: The present invention provides a device for stabilizing a bow, to enable the archer/hunter to be more accurate while shooting and to enable an archer to properly balance a bow. The invention is attached to the bow by a threaded hole on the forearm. The balancing of the bow is accomplished by the use of a stabilizer which has an axially adjustable hydraulic cylinder or capsule. The hydraulic cylinder is axially movable within a housing and can be adjusted by a slot and/or locating holes to a desired position which enables the archer to balance the bow. Pistons, sealed and housed in a cylinder, move axially on the main stabilizer body to successfully control noise, vibration, bow movement, torque, and aids in achieving a smooth release of an arrow.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: January 21, 1997
    Inventor: Franklin C. Brown, Jr.
  • Patent number: 5595168
    Abstract: A damping apparatus for an archery bow includes a semi-solid substance which is attachable to an archery bow. In one embodiment, the semi-solid substance is inserted into an aperture formed in the handle riser and secured in place by a retaining clip. In another embodiment, a double-backed adhesive tape is used to attach the semi-solid substance to any desired location on the handle riser. The present invention also includes a method of fabricating a handle riser incorporating a vibration dampener.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: January 21, 1997
    Assignee: Martin Archery Inc.
    Inventor: Terry G. Martin
  • Patent number: 5584282
    Abstract: A weight collar for use with a stabilizer adapted to be connected to a bow. The weight collar is removably connected to a stabilizer outer peripheral surface of the stabilizer. The weight collar includes a pad constructed of a compressible material whereby the weight collar is movable in upwardly and downwardly directions perpendicular to an axial center line of the weight collar and movable in angular directions relative to the axial center line of the weight collar while remaining attached to the weight collar. A stabilizer for use with a bow having a stabilizer tube with an opening extending therethrough forming a stabilizer chamber, the stabilizer chamber defining a stabilizer in a peripheral surface. A resonator suppressor ring is disposed in the stabilizer chamber between the first and the second ends of the stabilizer tube.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: December 17, 1996
    Inventor: Norman J. McDonald, Jr.
  • Patent number: 5558078
    Abstract: A bow stabilizer having a quick release clamp assembly at one end actuated by manual rotation of a weight member of the stabilizer. A shoulder and washers of the clamp assembly engage a groove wall and end wall of a bow mounted retainer during stabilizer installation.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: September 24, 1996
    Inventor: Patrick J. Dunlap
  • Patent number: 5555874
    Abstract: A waist supported bow string steadying device for an archer includes a fabric envelope within which a resilient bladder is supported to provide a size variable somewhat resilient member for contact with the bow string of a drawn bow prior to release. In several embodiments, the resilient member includes an inflatable bladder having a captive air volume therein which inflates to various degrees to provide bow string arrow rests of varying sizes. In alternate embodiments, a portion of the steadying device is provided with a storage cavity in which articles of convenience may be stored. In still further embodiments, the interior of the fabric envelope is provided with one or more resilient foam pads to impart shape and size to the fabric envelope and the desired dimension to the bow string steadying device.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: September 17, 1996
    Assignee: Savage Systems, Inc.
    Inventor: Huey P. Savage
  • Patent number: 5547162
    Abstract: The present invention reveals a screw-on device that attaches to an archery bow and enables the bow to stand in a vertical position in relation to the ground. The archery bow stand attaches to a standard bushing on an archery bow and is made of an elongated body with a retractable leg. The retractable leg is positioned in a groove along the elongated body and is connected to the body by a spring pin. By extending the retractable leg of the bow stand, a bow can be placed in a free standing vertical position.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: August 20, 1996
    Inventors: Eugene R. Sobolewski, David M. Roskos
  • Patent number: 5535731
    Abstract: An archery bow stabilizer comprises a set of four rods or arms which extend from an attachment block, which block is attachable to a standard stabilizer attachment fitting on an archery bow. The attachment block defines a common intersection for each pair of arms, thereby providing a simple resolution of the forces involved, and provides for each of the four arms to extend into one of the four quadrants defined by the longitudinal and lateral axes of the bow. The outer tip of each of the stabilizing arms or rods is downwardly disposed, thereby providing additional clearance for the archer's arm and sight line, and also for the release of an arrow from the bow. The downwardly disposed arms include removably adjustable masses at their tips, which also serve to lower the common center of mass of the bow and stabilizer assembly to a point approximating the hand grip of the bow, for greater stability.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: July 16, 1996
    Inventor: Mark A. Webster
  • Patent number: 5524602
    Abstract: A Gyro-Kinetic Hydraulic Bow Stabilizer disclosed for the reduction of random force exerted by a state of the art compound bow. A piston assembly (quadraulic unit) includes a hollow cavity cylindrical chamber, calculated tension spring, opposing poller pistons, retaining ring and fasteners, along with a viscous fluid in a capsule housing. The housing includes a cylinder tube closed at both ends by secured caps, and attached at one end by an energy transferring mounting bolt. The quadraulic unit moves laterally along the elongation direction of the stabilizer and contacts a piston rod portion of said poller pistons against a cap wall of the housing, developing multiple hydraulic events. Conventional lateral stabilization, which exists along with internal stabilization of the hollow cavity, fires pressurized tuned ports of different axial orientation on the outer periphery of the quadraulic unit.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: June 11, 1996
    Inventors: Tim M. Papandrea, Donald A. Schlosser
  • Patent number: 5520164
    Abstract: A universal adapter unit allows an archery-related accessory to readily and quickly connect and disconnect from a bow providing an attachment point for such accessories. The adapter includes two components, a first component intended for semi-permanent attachment to the bow at the attachment point, and a second component intended for semi-permanent attachment to an archery related accessory. A quick connect/disconnect type of connection system is provided between the two components, so that an accessory fitted with a second component may quickly and easily attach to a bow including the first component. Since, typically, the bow connection point is a threaded receptacle, the use of the first ad second components of the invention markedly speeds the attachment and detachment from the bow as compared to the use of the standardly provided threaded connection point.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: May 28, 1996
    Inventor: Jerry R. Huddleston
  • Patent number: 5517979
    Abstract: A shock absorbing device for a bow which is fixedly mounted on a bow or made integral with a bow and which is provided with a mount for a bow accessory such as a bow sight which mount is moveable by the expansion or compression of a spring in response to the shock generated by the bow to avoid loosening or breakage of the bow accessory by the shock generated by the bow.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: May 21, 1996
    Inventor: Robert A. Closson
  • Patent number: 5513622
    Abstract: A fastening device including a plug section that is readily manipulated to quickly engage and disengage a socket section. The plug section is provided with a forwardmost elongated plug that is insertable into a bore in the socket section. Guidance and locking together of the two sections or components is achieved through a pin which extends radially from the elongated plug and which is received by a multi-directional slot arrangement associated with the socket section. Short of achieving a fully assembled condition, an axially disposed, compressible member may extend from the face end of the elongated plug to engage a stop or an end wall within the bore of the socket section and thereafter produce a constant biasing force that in addition to assuring a rigid rattle-free attachment and maintain the components in a locked position.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: May 7, 1996
    Inventor: John Musacchia, Sr.
  • Patent number: 5511533
    Abstract: An adjustable stabilizer device for use on a bow to reduce and delay torque and other detrimental forces resulting from shooting thereof, including a housing containing a hydraulic component threadably carried therein. The hydraulic component includes a weight housing carrying a weight centered between opposing springs and moveably contained within hydraulic fluid. The adjustable stabilizer device is adjustable by moving the hydraulic component within the housing to counter differing forces generated by different bows.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: April 30, 1996
    Inventor: Charles O. Waller
  • Patent number: 5487374
    Abstract: A device for assisting a bowman in positioning and holding his bow in a draw by causing the plane of the bow to be drawn into a vertical plane and also by providing a steady rest for maintaining a stable position while in the draw. The device is a tether secured at one end to the lower limb of a bow and secured at the other end to the lower leg or foot of a bowman.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: January 30, 1996
    Inventors: Michael Herminath, Richard Wolfrath
  • Patent number: 5487375
    Abstract: A weight collar for use with a stabilizer adapted to be connected to a bow. The weight collar is removably connected to a stabilizer outer peripheral surface of the stabilizer. The weight collar includes a pad constructed of a compressible material whereby the weight collar is movable in upwardly and downwardly directions perpendicular to an axial center line of the weight collar and movable in angular directions relative to the axial center line of the weight-collar while remaining attached to the weight collar. A stabilizer for use with a bow having a stabilizer tube with an opening extending therethrough forming a stabilizer chamber, the stabilizer chamber defining a stabilizer in a peripheral surface. A resonator suppressor ring is disposed in the stabilizer chamber between the first and the second ends of the stabilizer tube.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: January 30, 1996
    Inventor: Norman J. McDonald, Jr.
  • Patent number: 5471969
    Abstract: A weight collar for use with a stabilizer adapted to be connected to a bow. The weight collar is removably connected to a stabilizer outer peripheral surface of the stabilizer. The weight collar includes a pad constructed of a compressible material whereby the weight collar is movable in upwardly and downwardly directions perpendicular to an axial center line of the weight collar and movable in angular directions relative to the axial center line of the weight collar while remaining attached to the weight collar. A stabilizer for use with a bow having a stabilizer tube with an opening extending therethrough forming a stabilizer chamber, the stabilizer chamber defining a stabilizer in a peripheral surface. A resonator suppressor ring is disposed in the stabilizer chamber between the first and the second ends of the stabilizer tube.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: December 5, 1995
    Inventor: Norman J. McDonald, Jr.
  • Patent number: 5460156
    Abstract: A stabilizer for a bow includes a tube having a hollow body having at least one open end, a cap for the open end, a closure at an end distal from the open end, and mounting means for securing the stabilizer to the bow. Hydraulic fluid and spring biased weights are provided and mounted in the tube to absorb the vibrations caused by the firing of the bow. A central rod extends the length of the tube along the axis of the tube. The weight and springs are slidably journaled over the bar and are maintained in place, radially, in the tube by the bar.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: October 24, 1995
    Assignee: Toxonics Manufacturing, Inc.
    Inventor: Donald R. Sappington
  • Patent number: 5411009
    Abstract: An apparatus for eliminating noise and vibration from compound bows comprising a fluid filled tube mounted horizontally to the bow body having a cylinder mounted within the tube, and a tuning rod or wire mounted within the cylinder. The vibrations from the bow travel down the tuning wire within the cylinder and are absorbed by the fluid within the tube.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: May 2, 1995
    Inventors: Myron P. Thompson, Cecil E. Thompson, Jr.
  • Patent number: 5390656
    Abstract: A pneumatic stabilizer for use with a bow, rifle, gun or any other instrument that produces destructive vibrational energy. The stabilizer includes a gas spring having weights secured thereto and structure for releasably attaching the stabilizer to an instrument. When the stabilizer is properly adjusted, it has similar vibrational frequency characteristics similar to the instrument such that the vibrational energy of the instrument is absorbed by the stabilizer.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: February 21, 1995
    Inventors: Teijo Villa, Chris Reid
  • Patent number: 5388563
    Abstract: The present invention apparatus is a novel and unique combination of a damping member adapted to an indexed scale fastener for use with an archery bow. The indexed scale fastener and the damping member can be used together or separately. The damping member can be used at locations on the archery bow which are remote from the indexed scale fastener. The concept is to have the indexed scale fastener adapted to the conventional threaded openings where the prior art hex screws are located. A user can screw the indexed scale fastener to the archery bow and measure the poundage applied to the archery bow by simply reading the scale provided on the indexed scale fastener. The damping member can be threadedly mounted to the indexed scale fastener or to the archery bow, where the damping member absorbs the vibrations and shock in both the longitudinal and lateral directions caused by releasing of the arrow from the archery bow.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: February 14, 1995
    Assignee: Micro Inventions Technology Inc.
    Inventor: Gary Hsu
  • Patent number: 5385136
    Abstract: The preferred embodiment of an impulse stabilizer for reducing the effects of a mechanical impulse produced by apparatus including archery bows or air-rifles comprises a sealed elongated housing containing along its axis from one end to the other: a first cushion; a first mass that is elongated, contains an axial hole, is surrounded with one or more bushings, and that only loosely fits within the housing; a coil type spring under compression; a second mass that is the same as the first mass except that its length, density, or hole cross-section area may be different; and a second cushion. The voids within the housing are essentially filled with a fluid such as hydraulic fluid. The dimensions are such that, at rest, the spring urges both masses against their adjacent cushions.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: January 31, 1995
    Assignee: Archery Dynamics, Inc.
    Inventor: Bruce A. Thomas
  • Patent number: 5370104
    Abstract: A new and improved archery bow stabilizer apparatus includes a housing; a threaded connector for connecting the housing to the bow; a rigid lead weight retained in the housing; a helical spring, retained in the housing and located between a wall of the housing and the rigid weight; and a quantity of liquid oil retained in the housing. The liquid, the rigid weight, and the spring work in conjunction with each other to absorb and damp torque and vibrations from the bow when a projectile is shot. Preferably, the housing is cylindrically shaped, the rigid weight is cylindrically shaped, and the rigid weight operates in the housing as a piston in a cylinder. A portion of the damping action takes place as a portion of the damping liquid squeezes between an inner wall of the housing and an outer surface of the rigid weight when the projectile is shot. A tension-adjusting assembly is attached to an end of the housing for adjusting tension in a spring inside the housing.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: December 6, 1994
    Inventor: Michael J. Neie
  • Patent number: 5351867
    Abstract: An arm steady rest provides support of the arm, particularly the forearm and/or wrist, of a person holding a relatively heavy or bulky article (e.g., rifle, archery bow, video camera, etc.). The arm rest is attachable to the belt or clothing of the user, or may be tied or strapped to the user, or used as a monopod resting upon another surface. The brace arm of the device telescopes, and moreover provides for axial motion of the two telescopes elements relative to one another while they are longitudinally locked at a fixed length. Adjustability is provided for both the upwardmost and downward/forwardmost positions of the brace arm while in the extended position. The device may be drawn from the downward or retracted position to the upwardly extended position and locked therein, or vice versa, with one simple motion of one hand; no additional manipulation of other components is required. Frictional security is provided to hold the brace arm in the downward position when not in use.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: October 4, 1994
    Inventor: Clyde L. Vest
  • Patent number: 5341792
    Abstract: In an archery bow, mechanically coupled means that transversely overlay and clamp onto opposed faces at an outer section of a bow limb onto opposed faces at an outer section of a bow limb to inhibit vibration, twisting and splitting of such limbs and a hook element extending from an outer one of the means for supporting the bow by suspension.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: August 30, 1994
    Inventor: Anthony D. Pucillo
  • Patent number: 5339793
    Abstract: A stabilizer for dampening bow string and arrow release forces, which stabilizer includes, in a preferred embodiment, a cylindrical housing fitted with a pair of end caps, one of which end caps receives a threaded stud for mounting the housing on a bow. The opposite end cap is fitted with a tapped opening for mounting one of many accessory items which are well known to those skilled in the art. A flexible, pliant, deformable and resilient suppressor member is disposed inside the cylindrical housing and includes a bore for receiving a metal core. In one embodiment the suppressor member is pinched by means of retaining rings near each end of the core to maintain the core in a selected position. The core is therefore free to exhibit multidirectional movement and depress the resilient suppressor member in response to release of an arrow from the bow, to dampen the arrow release forces, bow string vibration and other forces acting on the bow.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: August 23, 1994
    Inventor: Alan T. Findley
  • Patent number: 5320085
    Abstract: A portable accessory for attachment to an archer's bow to provide stability while aiming, shooting and setting bow sights. An all-thread rod [G] screwed into the hand grip [T] of the bow has a device [M, L, K, J and H] for rotating an adjustable shaft [S] on a plane parallel to the plane of the hand grip and bow string. The shaft is composed of 2 tubes [A1 and A2] of differing diameters, adjustable in length by telescoping in and out and is locked in a selected position with a thumb screw [B]. The shaft has a brace [D] attached to the end farthest from the hand grip. The brace also rotates and may rest on the archer's body, on the ground or on an overhead object such as a tree branch.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: June 14, 1994
    Inventor: Richard Hanneman
  • Patent number: 5273022
    Abstract: An apparatus for use with an archery bow stabilizer comprises a resilient elastomeric member, a housing having an open end, means for mounting the elastomeric member in the housing so that an end of the member extends from the housing, means for coupling the apparatus to an archery stabilizer arm at one end, and a stabilizer weight at the opposite end for providing an angularly flexible connection of selected resilience. A weight support arm for an archery bow stabilizer comprises an elongate tubular housing, coupling means for securing the stabilizer to an archery bow, and damping means disposed in the housing in a relaxed position for providing reduction of vibration of the stabilizer arm and the archery bow.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: December 28, 1993
    Inventor: William L. Leven
  • Patent number: 5239977
    Abstract: An improved elbow used to attach accessories such as stabilizers to archery bows is disclosed. The elbow comprises: an extended arm having a threaded-end capable of being attached to the bow (facilitated in the preferred embodiment by a nut) with the other end having a spherical bevel surmounted by a flat-portion, a saddle shaped wrist capable of receiving the threaded end of the accessory and encompassing the arm, and a hinge coupling the arm and wrist. The hinge uses a special pin that passes loosely through the arm and tightly through both sides of the wrist, and that also functions as a spring. The elbow has two modes of use: an extended mode, when the attached accessory and arm are in line and the attached accessory is essentially parallel to the arrow; and a folded mode, where the attached stabilizer is pivoted down or up.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: August 31, 1993
    Assignee: Archery Dynamics, Inc.
    Inventor: Bruce A. Thomas
  • Patent number: 5205272
    Abstract: A combination archery bow stabilizer and stand comprising a inverted Y of rigid material of sufficient weight to act as a bow stabilizer, having a center leg 18 and two divergent legs 22, 24 the center leg being terminally connectible at the stabilizer port 16, of the bow 10, the divergent legs being outwardly extended and spread sufficiently to support all but one end of said bow 10, off the ground.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: April 27, 1993
    Inventor: Bob Boyer
  • Patent number: 5090396
    Abstract: A stabilizer which may be attached to an archery bow. The stabilizer includes three elongated parallel rods with two end caps for interconnecting the three rods. An axial slider is mounted on the rods and may be secured at any desired axial position of the rods. The rods may be rotationally adjusted relative to the bow by means of a rotational adjustment which includes a locking nut.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: February 25, 1992
    Inventors: Wayne J. Bickel, Richard L. White
  • Patent number: 5044351
    Abstract: A hydraulic or pneumatic shock-absorber for sporting and hunting bows is fitted, as a connecting element, between a stabilizing counterweight (spinner) and the bow in such a manner as to permit, between the counterweight and the bow, a movement which is damped in the direction of the shot, although the counterweight is secured rigidly to the bow vertically and horizontally to the direction of the shot. This leads to smoother launching of the arrow and to marked accuracy.
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: September 3, 1991
    Assignee: Amerika-Bogen-Handelsgesellschaft mbH
    Inventor: Anton Pfeifer
  • Patent number: 5025774
    Abstract: Collapsible competition bow with improved vibrational behavior includes a longitudinally extending bow body having substantially rectangular parallelepiped sockets defined upon opposite ends thereof. Two flexible branches are respectively disconnectably mounted within the end sockets of the bow body and are secured therein by means of an immobilizing cam system. A spreader system is also provided within the blow body wherein the spreader system is adjustable both horizontally, vertically, and axially as may be desired.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: June 25, 1991
    Inventor: Jacques Martin
  • Patent number: 5016602
    Abstract: A bow stabilizer is mounted to an archery bow for the purpose of balancing the archery bow and reducing recoil, shock and vibration forces and noise that results when an arrow is discharged from the archery bow. The bow stabilizer has a hollow body which defines a chamber. An end plug is sealably secured to an end of the hollow body and another end plug is sealably secured to an opposite end of the hollow body. The bow stabilizer has at least one counterweight which is adjustable along a longitudinal axis of the hollow body to balance the archery bow. The chamber of the hollow body is partially filled with granular solids.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: May 21, 1991
    Inventor: Robert S. Mizek
  • Patent number: 4986018
    Abstract: A stabilizer for use with a firing weapon to reduce the effect resulting from firing such firing weapon, the stabilizer having a tube with a first and second end and a tube opening extending a distance therethrough generally between the first and the second ends thereof, and hydraulic fluid being disposed within and substantially filling the tube opening. Closure means substantially closes the first and the second ends of the tube for cooperating to retain the hydraulic fluid within the tube opening and a piston is disposed in the tube opening with the piston being movable in a first direction generally from the first end toward the second end of the tube and in the second direction generally from the second end toward the first end of the tube. A first spring is disposed within the tube opening having one end engageable with one end of the piston and the opposite end engageable with the portion of the closure means closing the first end of the tube.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: January 22, 1991
    Inventor: Norman J. McDonald, Jr.
  • Patent number: 4982719
    Abstract: A hydraulic stabilizer disclosed for reducing shock from firing a bow includes a piston movably received within a hydraulic cylinder. First and second chambers are defined between end caps of the hydraulic cylinder and the axial ends of the piston. The two chambers are connected by a central passage through the center of the piston. O-rings are mounted on the radially outer periphery of the piston and radial passages connect the central passage to the outer periphery of the piston. Conical coil springs are mounted in each of the first and second fluid chambers and bias the piston towards a central position with respect to the hydraulic cylinder. The use of conical coil springs ensures that the piston slows down as it moves towards the ends of the hydraulic cylinder. The improved hydraulic stabilizer reduces shocks from firing of the bow and ensures quieter shooting and more accurate bow operation.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: January 8, 1991
    Assignee: Ace Archers, Inc.
    Inventors: Alan J. Haggard, Christopher A. Young
  • Patent number: 4974575
    Abstract: A blind to be attached to a compound bow by a support rod threaded into the standard, threaded hole provided in the front of the bow to receive a stabilizer rod. The blind includes a central block supported at the end of the rod and having a threaded opening in its front surface to receive a standard stabilizer rod. Ribs radiate outwardly from the block to support the perimeter portions of a camouflage cloth spaced a short distance ahead of the bow.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: December 4, 1990
    Inventor: Frank E. Mitchell
  • Patent number: 4957093
    Abstract: A compound bow including a rigid central body portion having an arrow window recess in one side and a pair of bow limbs fixedly mounted to the front of the body. The central body portion is pivotally mounted to a support assembly for limited floating pivotal movement of the general plane of the bow limbs, bowstring and arrow axis relative to the hand grip member. The hand grip member has a pistol grip and arm support, the grip being mountable at any of several positions along the fore and aft axis of the support assembly for adjustment of the draw length without the necessity of changing pulleys or arrow length. The pivotal float between the support assembly and the bow plane eliminates misaligning torques placed on the arrow allowing greatly increased accuracy.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: September 18, 1990
    Inventor: Bruce R. Hamlett
  • Patent number: 4957095
    Abstract: A combination archery bow stabilizer and embedded arrowhead extractor having an elongated shaft with an enlarged head at one end and an elongated weight having a central bore extending therethrough in which the shaft is inserted in one direction for use as a stabilizer with the opposite end of the shaft extending from the weight and threaded for mounting in a bow mounting socket. When used as an embedded arrowhead extractor the shaft is reversed in the weight bore. The bore diameter at one end is large enough for the shaft head to slide therethrough to impact against an internal radial shoulder in the weight. The opposite end of the shaft includes a threaded internal bore for coupling to an arrowhead stem whereby reciprocating sliding motion of the weight against the shaft head functions as a slide hammer to remove the embedded arrowhead. A mounting socket in the shaft enlarged head enables additional accessories to be mounted to the bow in series with the stabilizer utilizing a single bow mounting socket.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: September 18, 1990
    Assignee: Cougar Archery Products
    Inventor: Ronald D. Cameron
  • Patent number: 4955356
    Abstract: A combined stabilizer and tracker for attachment to an archery bow has first and second threadably connectable body members. An additional weight may be afforded through the use of a threaded extension member. The second body member may be utilized with a removable bushing to allow use of a variety of standard archery tracking cords. The device may be employed as a combined stabilizer and tracker, or utilized solely as a stabilizer. The archery bow stabilizer and tracker is preferably formed from a corrosion resistant brass material and eliminates the need for separate stabilizing and arrow tracking devices.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: September 11, 1990
    Inventors: Michael L. Pike, William A. McCormick
  • Patent number: 4945666
    Abstract: A reactive force compensator is provided for a projectile firing device, such as a bow or gun, on which a force is exerted in a given direction when the projectile is fired. The compensator comprises an elongate casing adapted to permit the casing to be mounted on the projectile firing device with the length of the casing parallel to the direction of said force. A weighted piston member is disposed in the casing and adapted to reciprocate therein while remaining parallel thereto. The piston preferably has an aerodynamic end, disposed rearmost with respect to said force, and a more resistive end disposed forwardmost with respect to the force. Preferably, the latter end is defined by a hollow opening endwise through the piston member.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: August 7, 1990
    Inventors: Harold J. Henry, Paul M. Jennusa
  • Patent number: 4936283
    Abstract: In an archery stabilizer in which the proximal end of a swing rod carrying a damper head is held by a damper unit for detachable mounting to an archery bow, the proximal end of the swing rod is totally embraced by an elastic piece and a bearing in the damper unit so that the swing rod may undergo elastic deformation upon the release of an arrow from the bow. By totally embracing the proximal end of the swing rod, the damper unit enhances the damping ability of the stabilizer without necessitating an increase the size and weight of the stabilizer.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: June 26, 1990
    Assignee: Yamaha Corporation
    Inventor: Tadao Izuta
  • Patent number: 4907567
    Abstract: A bow stabilizer is provided for mounting to a bow and balancing and dampening the vibrations during shooting. The stabilizer assembly includes a shaft threaded to the bow handle and extending in the forward direction therefrom. A weight member is axially and radially mounted to the shaft by an offsetting bracket which is slidable and rotatable about the shaft to provide variable positioning of the weight about the shaft and to provide proper distancing from the bow handle. In the preferred embodiment the weight is a hollow tubular housing for storing tools, extra arrowheads and the like which are commonly carried into the field. Additional embodiments of the invention provide additional pivotal joints to adjust the shaft horizontally and vertically with respect to the bow and pivotally adjust the weight with respect to the shaft.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: March 13, 1990
    Inventor: Richard L. Henrich
  • Patent number: 4893606
    Abstract: The invention disclosed utilizes distributed mass in an inertial archery bow stabilizer and vibration damper. It employs internal flow limiting structure and a high density fluid inertial mass. The device comprises two major subassemblies. The first subassembly is a stabilizing element which includes an elongated casing plugged at each end, and having therein the flow limiting structure, preferably in the form of baffles, and fluid to provide the arrow release stabilization and vibration damping effect, the latter being influenced in its action by the presence and design of the baffles. The second subassembly is a housing which holds the first subassembly and preferably comprises a rigid tube or outer housing, end plugs, mounting structure at one end of the tube, and a cushioning bushing. The thrust stabilization is achieved by the relatively large mass of high density fluid retained within the rigid tube enclosing the stabilizing subassembly.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: January 16, 1990
    Inventor: Frank W. Sisko
  • Patent number: 4836177
    Abstract: An archery bow wrist brace has an externally padded, generally U-shaped rigid frame having an open front end which is anchored to a connecting bracket secured to a lower front portion of the bow handle. From their juncture with the bow handle the frame legs extend rearwardly of the handle to one side of the bow string and are positioned beneath the wrist and forearm of the archer's bow hand as it operatively grips the bow handle. The closed rear end of the padded frame is upwardly and rearwardly bent, and passes over and engages the forearm. Immediately in front of the bent rear frame end the padded frame legs are interconnectable with a tightening strap structure which passes beneath and engages the forearm. The bent rear frame end and the tightening strap structure cooperate to lock the forearm against appreciable transverse movement relative to the frame legs, thereby bracing the bow hand wrist and inhibiting undesirable pivoting of the bow body caused by string draw and release torques imposed thereon.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: June 6, 1989
    Assignee: Larry B. Wills
    Inventor: Bill R. Williams
  • Patent number: 4793319
    Abstract: A limb adjustment bolt for a compound archery bow includes a threaded shank for releasably attaching a limb to a handle portion of the bow. One end of the shank is connected to a generally circular flange which in turn is attached to a head of the bolt. The head is generally rectangular in cross section and has a longitudinal axis which is perpendicular to the longitudinal axis of the shank. A central portion of the head tapers outwardly and is attached to the flange. The head can include a threaded aperture for receiving a couterweight. Furthermore, the bolt can be formed of a separate head and shank.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: December 27, 1988
    Inventors: Norman Vaughan, James A. Nuhfer
  • Patent number: 4787361
    Abstract: This invention relates to an archery bow characterized by a combination handgrip and forearm protector hingedly attached in closely-spaced parallel relation to the longitudinal axis of the bow defined by the limbs of the latter and the bowstring, the handgrip-forming portion of the combination unit extending laterally out to the side and rearwardly relative to the forearm-protecting portion so as to define an acute angular relationship therebetween. The handgrip and protector cooperate with one another to prevent rotation of the forearm holding the bow while at the same time concentrating the force exerted on the handgrip at the apex of the included angle therebetween which lies closely adjacent the hinge axis thereby causing the force applied by the protector against the forearm to be minimized.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: November 29, 1988
    Inventor: Emil Vyprachticky
  • Patent number: 4779602
    Abstract: The abstract is of an archery bow compensator comprising a central rod or core that is threaded at its trailing end into a bow to extend forwardly therefrom. A chamber at the forward end of the rod may be loaded with pellets to balance the rod precisely in the archer's hand. An inertia sleeve carried on the rod moves forward when the bow string is released against the force of a compression spring. When compressed, the spring thrusts the sleeve back against a stop on the core to force the bow firmly into the Vee of the archer's hand against any tendency to jump out.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: October 25, 1988
    Inventor: Robert E. Hess, Sr.
  • Patent number: 4748965
    Abstract: An archery bow stabilizer and embedded arrowhead remover formed by a bolt having a head at one end and internal and external threads at an opposite end, two weights carried by the bolt, and a relatively thin disc being sandwiched between the weights. The latter structure is utilized as an archery bow stabilizer by threading the external thread to a stabilizer socket of a bow. To remove an arrowhead embedded in a tree or the like, one of the weights is removed, the bolt is secured to a threaded stem of an arrowhead from which the arrow shaft has been removed, and the remaining weight on the bolt is manually reciprocated against the bolt head to create impact forces which are transferred through the bolt to the arrowhead to, thus, facilitate the removal thereof.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: June 7, 1988
    Inventor: Gary S. Ament
  • Patent number: 4674472
    Abstract: A hip rest device for attachment to an archer's bow to provide stability during aiming and shooting. A bracket screwed to the hand grip of the bow has a rod extending toward the bow string and bent downward at an obtuse angle. A padded hip rest is attached to the lower end of the rod to permit bracing the bow against the archer's hip. A threaded connector may be provided for attaching the lower end of the rod to the hip rest for adjusting the effective length of the rod.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: June 23, 1987
    Assignee: Raymond W. Leahy
    Inventor: Daniel S. Reis