Weight lifting power cage with slave rack

A weight lifting power cage for use by a weight lifter includes a frame assembly including a pair of side frames and a rear lateral frame interconnecting the pair of side frames. A carriage is carried by the side frames and is movable simultaneously vertically and front to back. The carriage retains a weight bar mount for retaining a weight bar spanning between each side frame. The weight bar is movable by the carriage vertically and front to back. The movable carriage also carries a pair of vertical weight rack bars. An engagement mechanism enables the weight lifter to rack the weight bar from a weight lifting position without stepping forward or backward.

CROSS-REFERENCE TO RELATED APPLICATIONS

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH

Not applicable.

BACKGROUND OF THE INVENTION

The present invention generally relates to weight lifting cages for free weights and more particularly to a weight lifting cage having a movable carriage with slave racking capability.

Safety is always a concern to weight lifters, especially as the amount of weight approaches and passes the body weight of the weight lifter. Even lesser amounts of weight can be dangerous if the lifter loses control of the weight bar. For that reason, a spotter often is employed to assist the lifter should the amount of weight being lifted prove uncontrollable or should the lifter lose his/her balance while lifting weights. Often, however, a spotter is unavailable to the lifter and other safety means need to be employed.

One such other safety means is a weight lifting apparatus, often referred to as a power rack or power cage, such as is described in U.S. Pat. No. 5,215,510 or in U.S. Pat. No. 5,669,859. Such power cages are designed for the lifter to lift free weights without the need for a spotter. Power cages generally include a pair of side frames interconnected by a back frame. Each side frame carries a carriage, movable front to back and up and down. A weight bar runs laterally and is carried by the movable carriage. The lifter can add any desired amount of free weights to the weight bar and stand within the cage. The lifter can lift the bar while being able to step slightly forward and slightly backward within the cage, while simultaneously lifting the weight bar up and down. The dual-movable carriage permits such dual movement.

In one power cage model (see U.S. Pat. No. 5,669,859), each vertical side bar of the front and back frames have a series of outwardly projecting pins while the weight bar carriage has outwardly projecting hooks. The lifter can move to the front or to the back of the power cage and rack the weight bar by engaging the hooks onto the pins.

While this safety feature was a welcome addition to the weight lifting art, it still requires the lifter to move forward or backward to the cage frames in order to rack the weight bar. In an emergency, the lifter may not have sufficient time to walk to the frame periphery to rack the weight bar. The present invention is addressed to improving the ability of the lifter to rack the weight without stepping forward or backward.

BRIEF SUMMARY OF THE INVENTION

A weight lifting power cage for use by a weight lifter includes a frame assembly, a carriage, weight rack bars, and an engagement mechanism. The frame assembly includes a pair of side frames and a rear lateral frame interconnecting the pair of side frames. A carriage is carried by the side frames and is movable simultaneously vertically and front to back, i.e., depthenally. The carriage also carries a weight bar mount for retaining a weight bar spanning between each side frame. The weight bar is movable by the carriage vertically and depthenally, i.e., front to back. The movable carriage also carries a pair of vertical weight rack bars. An engagement mechanism enables the weight lifter to rack the weight bar from a weight lifting position without stepping forward or backward by dint of the rack bars also being mounted on the movable carriage.

Advantages of the present invention include a weight lifting power cage, which permits simultaneous vertical and depthenal movement of the lifter during lifting. Another advantage is the ability of the lifter to rack the weight bar without stepping forward to backward from the weight lifting position. These and other advantages will be readily apparent to those skilled in the art based on the disclosure set forth herein.

The drawings will be described in further detail below.

DETAILED DESCRIPTION OF THE INVENTION

Definitional terms appropriate for the present invention include:“weight lifting power cage” or “power cage” means a frame assembly retaining a weight bar, upon which free weights can be secured, such as are disclosed in U.S. Pat. Nos. 5,215,510 and 5,669,859.“rack” means to place a weight bar, barbell, or other weight lifting assembly to a stationary or home position.“vertical” means both upwardly and downwardly in a generally vertical direction.“lateral” means side to side.“depthenally” means front to back, back to front, or forwardly and rearwardly.“weight bar” means a generally horizontal bar, often made of metal, upon which weights, often called “free weights”, can be secured for a weight lifter or lifter to perform a series of repetitive movements of the weight bar as part of an exercise program or regimen, most often associated with body builders.

Referring initially toFIG. 1, a weight lifting power cage,10, is shown for retaining a weight bar,12, which can carry free weights,62and64, as illustrated inFIG. 5. Power cage10is formed from a pair of spaced-apart side frame assemblies,14and16. Each side frame assembly includes an upper depthenal frame member,18and20; a lower depthenal frame member,22and24; a pair of forward vertical frame members,26and28; and a pair of rearward vertical frame members,30and32. The side frame assembly14and16and joined by an upper lateral member,34, and a lower lateral member,36, and in the front by an upper lateral member,35(seeFIG. 4also). The respective frame members can be affixed together to form frame assemblies14and16by a variety of techniques, such as, for example, bolts, welds, rivets, screws, or any similar joining technique. The precise joining technique is unimportant, so long as requisite rigidity and strength are achieved for the intended weight lifting purposes of the inventive power cage. Also, such frame members often are formed from metal for strength and durability; although, other materials of construction are possible. Other than using nylon or other friction-reducing materials where appropriate, the entire power cage typically is constructed from metal, i.e., primarily constructed from metal.

Each frame assembly14and16carries a carriage assembly that supports weight bar12. Since each carriage assembly is the same, only carriage assembly,38, carried by frame assembly16will be described in detail. Running along with upper and lower side rails20and24of frame assembly16are a lower slide bar,40, and an upper slide bar,42. Each of these bars40and42carry a guide sleeve,44and46, respectively, movable depthenally along the extent of slide bars40and42, and including linear bearings, rollers, or similar mechanisms. Guide sleeve44carries a stop pin,48, which can be engaged to prevent guide sleeve44from moving along the extent of slide bar40whereby the inventive power cage becomes a traditional “Smith” or fixed power cage mechanism.

A vertical slide bar,50, extends between lower guide sleeve44and upper guide sleeve46. Vertical slide bar50retains a spring assembly,52, about its lower end. Spring assembly52protects the lifter and guide sleeve44should weight bar12be inadvertently dropped. Vertical slide bar50also carries a weight bar slide assembly,54(see alsoFIG. 3), which can slide along with vertical extend of vertical slide bar50. Weight bar slide assembly54in turn carries weight bar12.

Guide sleeves44and46also retain therebetween a vertical rack bar,56, which as a series of projecting rack pins, such as, for example, rack pin58. Now, weight bar12carries a latch assembly,60, which is rotatable about weight bar12and matable with rack pin58, as well as the other rack pins carried by vertical rack bar56. Latch assembly60is shown as a U-shaped assembly; although, a variety of shapes are operable. The same is true of the rack pins, which can be formed in a variety of shapes. So long as latch assembly60can be caught and retained by rack pin58, the desired racking purpose is achieved. That is, should the lifter desire to cease lifting weight bar12, the lifter need only move weight bar12slightly to the rear of the lifter and engage the rack pins with the latch assemblies to rack weight bar12. The lifter can accomplish racking simply by rotating or flipping the wrists slightly backwards, either under normal or emergency (imminent loss of control of weight bar12) conditions, to rack weight bar12.

Latch assembly60is one suitable engagement mechanism for racking weight bar12. Another suitable engagement mechanism is shown inFIG. 6and consists of vertical slots, such as vertical slot61in vertical rack bar57, which can be coupled with a hook,63, carried by weight bar12. Again, the weight lifter can simple rotate the wrists slightly backwards for hook63to fit into slot61and, thus, rack weight bar12. It will be appreciated that a multiplicity of such slots are formed in vertical rack bars56and57. So, too, does weight bar12carry a hook that mates with the vertical slots formed into vertical rack bar59. The skilled artisan can envision additional engagement mechanisms based on the disclosure set forth herein.

Referring toFIG. 2, an adjustable/movable safety spotter,52, can be moved up and down vertical slide bar50by a position assembly,51, formed by a latch,53, engagable by the rack pins and a fraction stop assembly,55. By squeezing friction stop assembly55together slightly, it can be moved up and down vertical slide bar50carrying latch53with it. At any desired vertical position, the lifter can engage a rack tooth carried by vertical rack bar56to lock spring assembly52into any desired position. A similar safety spotter also is associated with the other vertical slide bar.

Guide sleeve44enables the lifter to stand in almost any location within power cage10and even to move forward and backward as the lifter lifts weight bar12. Since vertical rack bar56also is carried by guide sleeve44, the lifter can rack weight bar12also at almost any location within power cage10.

While a variety of variations on the inventive power cage are within grasp of the skilled artisan, one such variation, for example, is depicted inFIG. 7. The upper portion of the power cage has been adapted to function with but a single upper carriage assembly,70, mating a depthenal slide bar,72, and a side slide bar,74, joined at either end to a pair of vertical slide bars,76and78. Carriage assembly70can move depthenally along slide bar72and laterally along slide bar74. Again, this is but another variation on the inventive power cage disclosed herein.

While the invention has been described with reference to a preferred embodiment, those skilled in the art will understand that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. In this application all units are in the metric system and all amounts and percentages are by weight, unless otherwise expressly indicated. Also, all citations referred herein are expressly incorporated herein by reference.