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An adjustable leash with automatic slack take-up assembly comprising a pulley buckle and cam buckle. The lead end of the leash strap is affixed to a top opening of the pulley buckle, and the leash body is movably threaded in operative order through a first opening of the cam buckle, a bottom opening

An adjustable leash with automatic slack take-up assembly comprising a pulley buckle and cam buckle. The lead end of the leash strap is affixed to a top opening of the pulley buckle, and the leash body is movably threaded in operative order through a first opening of the cam buckle, a bottom opening of the pulley buckle, and a second opening of the cam buckle. In operation, a user maintains a grip at all times on the lead handle. The user depresses the spring loaded tab with the user's other hand. While depressing the spring loaded tab, the user pulls a pull tab on the cam buckle with the second hand to either lengthen or shorten the device. Once a desired length has been formed, with automatic slack take-up as the leash length is adjusted, the user releases the spring loaded tab to lock the device into position.

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1. An adjustable leash device, comprising: a leash strap having a lead end, a clasp end, a first length forming a lead handle, and a second length forming a leash body;a slack take-up assembly comprising a pulley buckle and a cam buckle, said pulley buckle defining a top opening and a bottom opening

1. An adjustable leash device, comprising: a leash strap having a lead end, a clasp end, a first length forming a lead handle, and a second length forming a leash body;a slack take-up assembly comprising a pulley buckle and a cam buckle, said pulley buckle defining a top opening and a bottom opening, said bottom opening further defined by a pulley buckle bar;said cam buckle defining a first and second opening; the first opening further defined by a cam buckle bar; the second opening further defined by a spring loaded tab;wherein the lead end of the strap is affixed to the top opening of the pulley buckle, and the leash body is movably threaded in operative order through the first opening of the cam buckle, through the bottom opening of the pulley buckle, and through the second opening of the cam buckle. 2. The device of claim 1, wherein the cam buckle further comprises a pull tab. 3. The device of claim 1, wherein the slack take-up assembly is capable of reducing the second length of the leash body to a plurality of reduced lengths. 4. The device of claim 1, wherein the slack take-up assembly is capable of reducing the second length of the leash body to more than one-half of the second length. 5. The device of claim 1, wherein the slack take-up assembly automatically takes up slack in the leash body upon reducing the length of the leash body. 6. The device of claim 1, wherein the slack take-up assembly automatically takes up slack in the leash body upon increasing the length of the leash body. 7. The device of claim 1, wherein the leash body is shortened by fluid adjustment of the leash body in an upward direction through the second opening of the cam buckle, around the pulley buckle bar, and around the cam buckle bar. 8. The device of claim 1, wherein the leash body is lengthened by fluid adjustment of the leash body in a downward direction through the second opening of the cam buckle, around the pulley buckle bar, and around the cam buckle bar. 9. The device of claim 1 wherein the leash strap comprises a single, continuous piece of strap material of a defined length. 10. The device of claim 1 wherein the leash strap comprises a plurality of strap lengths. 11. An adjustable leash device, comprising: a leash strap having a lead end, a clasp end, a first length forming a lead handle, and a second length forming a leash body;a slack take-up assembly comprising a pulley buckle and a cam buckle, said pulley buckle defining a top opening and a bottom opening, said bottom opening further defined by a pulley buckle bar;said cam buckle defining a first and second opening; the first opening further defined by a cam buckle bar; the second opening further defined by a spring loaded tab;a clip affixed to said leash strap, said clip capable of attachment to an item for transport;wherein the lead end of the strap is affixed to the top opening of the pulley buckle, and the leash body is movably threaded in operative order through the first opening of the cam buckle, through the bottom opening of the pulley buckle, and through the second opening of the cam buckle. 12. The device of claim 11, wherein the cam buckle further comprises a pull tab. 13. The device of claim 11, wherein the slack take-up assembly is capable of reducing the second length of the leash body to a plurality of reduced lengths. 14. The device of claim 11, wherein the slack take-up assembly is capable of reducing the second length of the leash body to more than one-half of the second length. 15. The device of claim 11, wherein the slack take-up assembly automatically takes up slack in the leash body upon reducing the length of the leash body. 16. The device of claim 11, wherein the slack take-up assembly automatically takes up slack in the leash body upon increasing the length of the leash body. 17. The device of claim 11, wherein the leash body is shortened by fluid adjustment of the leash body in an upward direction through the second opening of the cam buckle, around the pulley buckle bar, and around the cam buckle bar. 18. The device of claim 11, wherein the leash body is lengthened by fluid adjustment of the leash body in a downward direction through the second opening of the cam buckle, around the pulley buckle bar, and around the cam buckle bar. 19. The device of claim 11 wherein the leash strap comprises a single, continuous piece of strap material of a defined length. 20. A method of selectively adjusting a length of a leash device by a user, said leash device, comprising: a leash strap having a lead end, a clasp end, a first length forming a lead handle, and a second length forming a leash body; a slack take-up assembly comprising a pulley buckle and a cam buckle, said pulley buckle defining a top opening and a bottom opening, said bottom opening further defined by a pulley buckle bar; said cam buckle comprising a pull tab and defining a first and second opening; the first opening further defined by a cam buckle bar; the second opening further defined by a spring loaded tab; wherein the lead end of the strap is affixed to the top opening of the pulley buckle, and the leash body is movably threaded in operative order through the first opening of the cam buckle, through the bottom opening of the pulley buckle, and through the second opening of the cam buckle, said method comprising the operations of: maintaining a grip on the lead handle with a first hand of the user;depressing the spring loaded tab with a second hand of the user;while depressing the spring loaded tab, pulling the pull tab with the second hand;selectively releasing the spring loaded tab at a desired position along the second length of the leash body.