Abstract: An adjustable carriage assembly is configured to be mounted on a frame member of a weight rack and includes a locking structure for locking the carriage assembly in place on the frame member. The carriage assembly may include a moveable carriage with a plurality of rollers that engage the frame member, as well as one or more handles for gripping to adjust the position of the carriage assembly and a connection structure for connection of an implement or accessory. Various implements and accessories can be connected to or used in connection with the carriage assembly, including various weightlifting implements and accessories that are pivotably connected to the carriage assembly.

Abstract: A monolift assembly includes a carriage assembly configured to be releasably secured to a post of a rack for weightlifting equipment. A pivoting piece is pivotally connected to the carriage assembly and has a hook at a first end thereof and a counterweight at a second end thereof. The pivoting piece includes a central plate, a first exterior plate abutting a first side of the central plate and a second exterior plate abutting a second side of the central plate.

Abstract: An assembly includes a bar having a sleeve assembly connected to an end portion. The end portion has a first outer diameter, a shoulder section having a smaller diameter than the first outer diameter, a neck section having a smaller outer diameter than the shoulder section, and a head section having a larger outer diameter than the neck section, such that the neck section forms a recessed slot. The sleeve assembly includes a sleeve having a connection assembly for connecting the sleeve to the end portion, which includes a split ring having semi-annular pieces received within the recessed slot and around the neck section, a proximal washer positioned axially inward from the split ring, around the shoulder section, a distal washer positioned axially outward from the split ring, around the head section, and an annular member extending circumferentially around the split ring to retain the semi-annular pieces within the slot.

Abstract: A connector assembly includes a shaft and a first annular knob fixed to the shaft and a second annular knob releasably engaged with the shaft. Each of the first and second annular knobs includes a front face, a face, and a central passage that receives the shaft. The central passage has first, second, and third sections. The width of each first section is greater than the width of the third section, and the width of the second section is greater than the width of the first section. The second section defines an annular slot between the first and third sections.

Abstract: A weightlifting machine that includes a pulley system and a cable system that attaches to a weight rack frame to allow a user to perform a weightlifting exercise. The pulley system may include a first pulley and a second pulley where the cable system engages each pulley. The cable system may have a first end connected to a grip attachment and a second end attached to a resistance element. The resistance element may include a resistance band, a weight support that holds a weight plate, a set of weight plates, or other type of resistance element. The cable system may extend from the pulley through an opening located one of the frame members that form the frame. A seat attachment assembly may also be connected to the weightlifting machine, where the weightlifting machine may include a pulley rotatably connected to a seat base that supports a seat.

Abstract: A bag includes an outer shell formed of one or more flexible panels connected together to define an inner cavity configured to contain a particulate material, with the outer shell having a first or top end, a second or bottom end opposite the first end, and an opening providing access to the inner cavity. A tube structure extends through the outer shell from the first end to the second end of the outer shell. The tube structure includes a first opening in the first end of the outer shell, a second opening in the second end of the outer shell, and a tube extending through the inner cavity of the outer shell, from the first opening to the second opening. The tube is configured to receive an implement, such as a rope or a handle assembly, therethrough to connect the bag to the implement.

Abstract: An adjustable carriage assembly is configured to be mounted on a frame member of a weight rack and includes a locking structure for locking the carriage assembly in place on the frame member. The carriage assembly may include a moveable carriage with a plurality of rollers that engage the frame member, as well as one or more handles for gripping to adjust the position of the carriage assembly and a connection structure for connection of an implement or accessory. Various implements and accessories can be connected to or used in connection with the carriage assembly, including various weightlifting implements and accessories that are pivotably connected to the carriage assembly.

Abstract: A shell assembly configured for holding one or more weighted articles includes an outer shell having an outer surface and an inner surface defining a cavity configured for receiving the article(s) therein, with an opening providing access to the cavity, a closure configured for selectively opening and closing the opening, and a securing structure configured for securing the article(s) within the cavity to limit movement of the article(s). The securing structure includes a plurality of adjustable straps each connected to the inner surface of the outer shell at a first securing point and a second securing point on opposite sides of the opening. Each of the straps is adjustable with respect to the outer shell to increase or decrease an effective length of the respective strap between the respective securing points, to increase or decrease a distance between the respective securing points and thereby constrict or expand the outer shell.

Abstract: A weightlifting machine attachment configured to provide support a weight carriage that moves on a carriage support. The weightlifting machine attachment may include a mounting bracket that attaches to a weightlifting machine that comprises a weight carriage and a carriage support. The attachment also includes an arm, where the arm has a rear wall and two arm side walls extending forward from the rear wall forming an interior cavity. A supporting insert may be mounted to the arm and received in the interior cavity, where the supporting insert comprises a supporting surface configured to engage the carriage to support the carriage in a resting position.

Abstract: A connector assembly includes a shaft and a first annular knob fixed to the shaft and a second annular knob releasably engaged with the shaft. Each of the first and second annular knobs includes a front face, a face, and a central passage that receives the shaft. The central passage has first, second, and third sections. The width of each first section is greater than the width of the third section, and the width of the second section is greater than the width of the first section. The second section defines an annular slot between the first and third sections.