DETAILED DESCRIPTION OF THE INVENTION

[0027] A perspective view of the strength-training device of this invention is illustrated at 10 in FIG. 1. The inventive strength-training device 10 is an exercise device for developing strength and muscle mass in the forearms, upper arms, and shoulders areas. The strength-training device 10 may be constructed from metal, dense polymers, suitably strong and rigid materials, or combinations thereof, that is capable of sustaining high stresses imposed upon it during use. Die-casting is the preferred means of manufacturing, but is not limited to other manufacturing techniques.

[0028] The strength-training device 10 comprises left and right gripping handles 17a and 17b that are firmly connected to the center joint piece 13 that is of a greater diameter. Gripping handles 17a and 17b can be hollow or solid in construction. The ends of gripping handles 17a and 17b are fixed to the solid left and right end caps 18a and 18b that are also of a greater diameter. End caps 18a and 18b feature unique concave surface 25 that terminates at end cap surface vertex line 26. The gripping handles are generally cylindrical and are sized to conveniently and comfortable grasped in the adult hands.

[0029] Center joint piece 13 has unique features that distinguish the inventive strength-training device 10 from all other prior arts. The center joint piece has a concave surface 12 that terminates at main surface vertex line 24. The concaved surface 12 concentrates the exercise cord 19 at the main surface vertex line 24 in order to provide stability and control during training, as illustrated in FIG. 17 and FIG. 18. Secure hole 20 houses and secures the latching rod 27 to the center joint piece 13. End cap stopper 21 is located at one end of secure hole 20, while the T-lock cavity 22 is located at the opposite end of secure hole 20. End cap stopper 21 prevents latching rod 27 from completely sliding through secure hole 20 during insertion of latching rod 27 into center joint piece 13. T-lock cavity 22 secures latching rod 27 preventing it from slipping out the opposite direction. The underbody cavity 23 underneath center joint piece 13 allows the attachment of exercise cord 19, carabiner 35, or weight machine cable 37 to latching rod 27.

[0030] The latching rod 27 consists of column end cap 16 firmly attached to one end of the main rod column 28. The T-lock arm housing slot 31 occupies the opposite end of main rod column 28, where the T-lock arm 29 is held in place by the T-lock pin 30. The latching rod 27 is constructed from metal, and preferably through die-casting manufacturing technique. Latching rod 27 is housed internal of center joint piece 13 through secure hole 20. Exercise cord 19, carabiner link ring 35, or weight machine cable 37 is attached to latching rod 27 during exercise workout, as illustrated in FIG. 17, FIG. 18, FIG. 19, and FIG. 20.

[0031] To place latching rod 27 in a locked position, swing the T-lock arm 29 ninety degrees to the left or right until the T-lock arm 29 is perpendicular to main rod column 28, as illustrated in FIG. 12. To place latching rod 27 in an unlocked position, swing T-lock arm 29 ninety degrees to the left or right until T-lock arm 29 is in lined with main rod column 28, as illustrated in FIG. 13.

[0032] To secure latching rod 27 to center joint piece 13, place latching rod 27 in an unlocked position, FIG. 13, insert latching rod 27 through secure hole 20 until column end cap 16 makes contact with end cap stopper 21. Swing the T-lock arm 29 ninety degrees left or right until T-lock arm 29 is perpendicular to main rod column 28, push latching rod 27 in the opposite direction until T-lock arm 29 makes contact with T-lock cavity 22, latching rod 27 is now secured to center joint piece 13. To remove latching rod 27 from center joint piece 13, push column end cap 16 inward until it contacts end cap stopper 21. Swing the T-lock arm 29 ninety degrees to the left or right until T-lock arm 29 is in lined with main rod column 28, FIG. 13, apply adequate force to T-lock arm 29 in the opposite direction until latching rod 27 is dislodged from secure hole 20.

[0033] The exercise cord 19 is constructed from small wire cable or other durable, elastic non-metallic material. It is of predetermined length with first and second end loops 32a and 32b secured by first and second cord clips 39a and 39b. Exercise cord 19 is of defined tension strength capable of withstanding high-tension pressure. Exercise cord 19 is attached to latching rod 27 by first end loop 32a through the underbody cavity 23 of the center joint piece 13. The second end loop 32b is secured to free weight disc(s) 34, FIG. 17.

[0034] The strength-training device 10 may be used in three ways. First way: Properly attach first end loop 32a of exercise cord 19 to latching rod 27 at center joint piece 13, and secure second end loop 32b to free weight disc(s) 34 of desired weight. Using proper stance while standing, and with arms fully extended directly in front, grasp the strength training device 10 in such a way that the arms are parallel to the ground and the free weight disc(s) 34 are suspended just above the ground. With both hands 33a and 33b, raise the free weight disc(s) 34 by alternately gripping and curling the strength training device 10 towards the body, continue this motion rapidly until free weight disc(s) 34 reaches center joint piece 13, FIG. 17. At this point, lower the free weight disc(s) 34 by alternately gripping and curling the strength training device 10 away from the body, continue this motion slowly until free weight disc(s) 34 is fully suspended again, FIG. 18. To complete the one count workout, continue alternately gripping and curling the strength training device 10 away from the body, continue this motion rapidly until free weight disc(s) 34 reaches the center joint piece 13 for the second time. Again, lower the free weight disc(s) 34 by alternately gripping and curling the strength training device 10 towards the body, continue this motion slowly until free weight disc(s) 34 is fully suspended back in the starting position. This completes the one count workout. Repetition of this exercise with variable amounts of weights effectively develops strength and increases muscle mass in the forearms muscle groups as well as the shoulders muscle groups.

[0035] Second way: With the assistance of a weight machine system, properly attach carabiner 35 to top weight machine cable 37 and to latching rod 27 at center joint piece 13, FIG. 19. With both hands 33a and 33b grasping gripping handles 17a and 17b palms down at the start position, exert powerful downward motion with the forearm, FIG. 19, all the while keeping both elbows locked close to the body and only pivot at the elbow joints. Return to start position by slowly controlling the ascend rate of the strength training device 10 with both hands 33a and 33b. This completes one count workout. Repetition of this second exercise with various weight machine weights 38 settings effectively develops strength and increases muscle mass in the upper arms triceps muscle groups.

[0036] Third way: With the assistance of a weight machine system, properly attach carabiner 35 to bottom weight machine cable 37 and to latching rod 27 at center joint piece 13, FIG. 20. With both hands 33a and 33b grasping gripping handles 17a and 17b palms up at the start position, exert powerful upward motion with the forearm, FIG. 20, all the while keeping both elbows locked close to the body and only pivot at the elbow joints. Return to start position by slowly controlling the descend rate of the strength training device 10 with both hands 33a and 33b. This completes one count workout. Repetition of this third exercise with various weight machine weights 38 settings effectively develops strength and increases muscle mass in the upper arm bicep muscle groups.

[0037] The exercise cord may be wrapped around the training device's end caps, longitudinally, for easy storage when training is complete.

[0038] The inventive strength-training device 10 has been described in detail with reference to a preferred embodiment thereof. Many variations, substitutions, and modifications may be made in departure from the particular construction and characterization in the drawings and foregoing description, without departing from the true spirit of the invention. Therefore it is understood that the invention should be limited only by the breadth and scope of the appended claims.