Patent Grant
7628718
The present invention relates to basketball goals, consisting generally of a basket, rim, and support, which are capable of deflecting in a variety of directions upon application of sufficient force, such as from a dunk shot, the deflection preventing damage to the rim and associated backboard to which the goal is mounted. The present invention relates particularly to such a goal that can automatically return to an original position upon removal of the force.
U.S. Pat. Nos. 4,111,420 and 4,194,734 disclose an energy absorbing basketball goal/backboard unit that incorporates a conventional vertically aligned backboard and horizontally aligned goal, i.e., the basket. The goal is spring mounted to pivot relative to the backboard forwardly and downwardly out of its normal horizontal plane when a predetermined excess force is applied such as when a player dunks the basketball and slaps, hits or pulls the goal with his hands, wrists, or arms. The goal returns to its original position with the energy of the return motion being dissipated by shock absorbing means. Provision can also made for the goal to deflect sideward under spring and shock absorbing restraint. The spring providing the return forces and the shock absorbing means are mounted behind the backboard and connected to the goal by members extending though openings in the backboard.
U.S. Pat. No. 4,365,802 discloses a basketball goal-backboard unit including a backboard of glass, a rigid frame surrounding the backboard, a shock-absorbing assembly having a front plate and a rear plate disposed in registering relationship forwardly and rearwardly, respectively, of the backboard. Cushioning panels are snugly disposed between the backboard adjacent faces of the front and rear plates and the backboard, and with the basketball goal incorporating a mounting element disposed on the forward face of the front plate. A single bolt interengages the basketball goal mounting element, the front and rear plates, and the cushioning panels. A fluid cylinder can be presented rearwardly of the backboard, being mounted upon the frame, and having a piston operatively engaged at the rearward plate.
U.S. Pat. No. 4,433,839 discloses a basketball rim assembly especially adapted to relieve forces which normally are imparted to the backboard of conventional basketball rim assemblies. There is a rim of conventional configuration mounted to a support plate which fits against the forward face of the backboard. There is a rear support plate on the backside of the backboard fixedly attached to the front plate. This rear plate in turn transmits loads exerted thereon into a base frame structure. Additionally, the rim is provided with a release mechanism which permits it to rotate downwardly from its horizontal position when an impact load of sufficient magnitude is exerted on the rim such as those occurring in the execution of a dunk shot.
U.S. Pat. No. 4,723,777 discloses a basketball goal for mounting on a backboard for providing absorption and dissipation of the energy occurring during a dunk shot or the like. The rim of the goal is pivotally mounted to the backboard and held in place by means of a spring and fluid filled hydraulic piston-cylinder mechanism, which are mounted between the backboard and the rim. A downward force on the rim is opposed primarily by a vertical coil spring surrounding the cylinder. The cylinder and spring are coaxial with the axis being substantially parallel to the plane of the backboard. The downward motion of the rim opens a valve in the piston-cylinder allowing the cylinder to be moved upwardly with the downward movement of the rim with substantially no hydraulic restrictions. When the rim begins its return to normal position under spring pressure, the valve is closed. The piston has a predetermined diameter smaller than the inside diameter of the cylinder. Expansion of the compressed spring forces the piston upwardly, with the space between the piston wall and cylinder wall creating a limited flow of the fluid so as to cushion and dampen the return of the rim to its normal position.
U.S. Pat. No. 5,685,790 discloses a basketball goal having support structure adapted to be mounted to a backboard, and rim structure including a rim, mounted to the support structure. The basketball goal further includes a rim support assembly including a clamp, a spring and a rigid member. The clamp is mounted to the rim support assembly and has a clamped position for maintaining the rim in a horizontal position, and an unclamped position enabling the rim to swing downwardly in an arcuate path. The spring is operatively mounted to the clamp for maintaining the clamp in the clamped position, and for permitting the clamp to assume the unclamped position and move in the arcuate path upon application of a predetermined force to the rim. The rigid member supports the spring, and is mounted for swinging movement along another arcuate path upon application of the predetermined force to the rim, thereby preventing damage to the spring when the clamp assumes the unclamped position.
U.S. Pat. Nos. 5,716,294 and 6,080,071 discloses a breakaway basketball rim assembly in which there is a release assembly which operably interconnects the base member and the rim member, the release assembly being configured to release the rim member in response to a downward load which is received at any point along an extended frontal arc of the circular hoop, so that the hoop tilts downwardly generally in the direction of the load. There is also a reaction load mechanism for returning the hoop to its horizontal playing position. A U-shaped fulcrum joint extends between the reaction load in the hoop so as to provide a pivot point in line between the reaction load and any impact point along the extended frontal arc of the hoop. The joint is configured so that the rim releases in response to a substantially identical impact load anywhere along the frontal arc.
U.S. Pat. No. 6,447,409 discloses a breakaway basketball rim assembly with a mounting unit with a vertical baseplate and a horizontal mounting plate, and a rim unit having a circular hoop portion and a pivot plate that projects rearwardly from the hoop portion in spaced relation above the mounting plate. A ball bearing is positioned between the pivot plate and the mounting plate to provide the pivot point for releasing the rim unit when a downward load is placed upon the hoop portion. At least one stop is placed on top of the mounting plate to restrict the movement of the pivot plate and load a plurality of spring-loaded attachments that extend from the pivot plate through the mounting plate to return the rim unit to a generally horizontal position.
U.S. Pat. Nos. 6,503,160 and 6,935,972 disclose a breakaway basketball rim assembly in which the mounting bracket and rim are operably interconnected by a torsion rod which twists resiliently in response to an impact or other downward load on the rim. The torsion rod may extend parallel to the backboard, with one end being fixedly mounted to the mounting bracket and the other end being fixedly mounted to the rim, so that the torsion rod allows the rim to deflect downwardly about an axis that extends parallel to the backboard. The torsion rod may be mounted to overlapping flanges on the mounting bracket and the rim. There may also be a longitudinal torsion rod that extends perpendicular to the transverse torsion rod, so as to permit the rim to deflect downwardly about axes that extend both parallel and perpendicular to the backboard.
Despite the various features and benefits of the structures of the forgoing disclosures, there remains a need for an inexpensive, compact basketball rim support that permits controlled deflection of the rim in a variety of directions, while maintaining the rim at the conventional position during any normal impact between a basketball and the rim, and includes an automatic return mechanism for returning the rim to its original position without have to resort to any manual reset of that position.
These several needs are satisfied by a basketball rim mounting assembly that is designed to allow multi-directional deflection in response to extraordinary forces imposed on the rim. The rim mounting assembly has a fixed portion coupled to a back board and a movable portion fixed to the basketball rim. The fixed portion can include a back plate secured to a front face of the back board, a pair of bracket plates fixed to extend forward from the back plate, and a base plate fixed between the bracket plates. The movable portion can include a top plate overlying the base plate and a pair of side plates extending downward from the top plate outside the bracket plates. A pair of downwardly extending members are fixed to the top plate in spaced relation to each other. Tilt regulating structure is coupled between the pair of downwardly extending members and to the fixed portion for controlling the extent of deflection of the rim relative to the backboard. The tilt regulating structure is such that the extraordinary force necessary to cause the rim to break-away from its normal position is the same in any direction.
The tilt regulating structure can take a form wherein each of the pair of members fixed to the top plate is coupled to one of a first arm and a second arm mounted on the fixed portion so that movement of the movable portion is translated into relative movement between the first and second arms. A pivot axis member can be fixed to the fixed portion and the first arm and the second arm mounted on the pivot axis member. A biasing element resists relative movement of the first and second arms, while at least one displacement element causing relative displacement between the first and second arms upon movement of the movable portion relative to the fixed portion. The at least one displacement element can take the form of a number of balls received between confronting depressions in the first and second arms.
The tilt regulating structure can also take a form wherein each of the pair of members fixed to the top plate comprises an axis defining structure coupled to a pivot bridge member located between the pair of members forming a gimbaled connection between the movable portion and the fixed portion. The gimbaled connection is completed by further axis defining structure fixed to the fixed portion, the axis thusly defined being perpendicular to the axis defining structure fixed to the top plate. A biasing element is provided that resists movement of the pivot bridge that can take the form of a pair of springs positioned on laterally opposite sides of the second axis and forward of the first axis so that the rim is automatically returned to the original set position.
One feature of the present invention is the tilt regulating structure which is such that the extraordinary force necessary to cause the rim to break-away from its normal position is the same in any direction. Another feature of the present invention is the compactness of the tilt regulating structure which is situated below the top plate of the movable portion and in front of the back plate of the fixed portion within a volume that can be secured by a cover plate to prevent tampering with the tilt regulating structure. Such structure has distinct advantages over the various prior art wherein the tilt regulating structure was found behind the back board, and wherein the force necessary to cause the rim to break-away varies depending on the location on the rim of the applied extraordinary force.
Other features of the present invention and the corresponding advantages of those features will be come apparent from the following discussion of the preferred embodiments of the present invention, exemplifying the best mode of practicing the present invention, which is illustrated in the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. Moreover, in the figures, like referenced numerals designate corresponding parts throughout the different views.
A basketball goal 10 is shown in
A first arm 38 and second arm 40 are shown in
Any change in position of the rim 14, which might occur as a result of a dunk shot or a player hanging on the rim, causes a corresponding change in position one or both of the L-shaped connecting members 62 and 64. A change in position one or both of the L-shaped connecting members 62 and 64 will generally cause a relative rotational displacement of the corresponding arm or arms 38 and 40 such that the depressions 48 are skewed. The skewing of the depressions 48 causes the balls 50 captured in the confronting depressions 48 to force the arms 38 and 40 to separate against the biasing force provided by the spring 52. Since the force necessary to cause the rim to break-away from its normal position is regulated by the spring 52, it will be seen that it is the same in any direction regardless of where on the rim 14 the force might be applied. Upon release of the rim 14 from its displaced position, the biasing force provided by the spring 52 causes a realignment of the depressions 48 around the captured balls 50 so that the arms 38 and 40 are returned to their original position. This return of the arms 38 and 40 to their original position assures that the top plate 16 also returns to its original position.
Another embodiment of the basketball goal 78 is shown in
A first pair of bearings 80 and 82 are fixed by fasteners 81 to the lower surface of the top plate 16. A pivot bridge member 84 is coupled to the bearing members 80 and 82 by axles 86 and 88 that permit the pivot bridge member 84 to pivot about axis X. A second pair of bearings 90 and 92 are fixed by fasteners 91 to the top surface of the base plate 30. Axles 94 and 96 couple the pivot bridge member 84 to the second pair of bearings 90 and 92 so that the pivot bridge member 84 can pivot about an axis Y that is perpendicular to axis X as shown in detail in
A pair of springs 98 are coupled to the base plate 30 by fasteners 73 passing through nuts 74. The pair of springs 98 extend upwardly from the base plate 30 to contact the top plate 16 as shown in
The rim support assembly of
While these features have been disclosed in connection with the illustrated preferred embodiment, other embodiments of the invention will be apparent to those skilled in the art that come within the spirit of the invention as defined in the following claims.
| Number | Name | Date | Kind |
|---|---|---|---|
| 3233898 | Sheets et al. | Feb 1966 | A |
| 4111420 | Tyner | Sep 1978 | A |
| 4194734 | Tyner | Mar 1980 | A |
| 4365802 | Ehrat | Dec 1982 | A |
| 4433839 | Simonseth | Feb 1984 | A |
| 4534556 | Estlund et al. | Aug 1985 | A |
| 4723777 | Jolly | Feb 1988 | A |
| 5106084 | Vaught | Apr 1992 | A |
| 5348289 | Vaught | Sep 1994 | A |
| 5586759 | Fitzsimmons et al. | Dec 1996 | A |
| 5628506 | Vaught | May 1997 | A |
| 5685790 | Vaught | Nov 1997 | A |
| 5716294 | Childers et al. | Feb 1998 | A |
| 5816955 | Nordgran et al. | Oct 1998 | A |
| 5830090 | Fitzsimmons et al. | Nov 1998 | A |
| 6080071 | Childers et al. | Jun 2000 | A |
| 6186911 | Manthey | Feb 2001 | B1 |
| 6296583 | Tatar, Sr. | Oct 2001 | B1 |
| 6447409 | Squibb | Sep 2002 | B1 |
| 6503160 | Hehr | Jan 2003 | B2 |
| 6935972 | Hehr | Aug 2005 | B2 |
| 7175551 | Hamilton | Feb 2007 | B1 |
| 7214148 | Mahoney | May 2007 | B2 |
| 20030054906 | Allshouse et al. | Mar 2003 | A1 |
| 20070167265 | Connerley | Jul 2007 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| 20070167265 A1 | Jul 2007 | US |
