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A tie down device having a pulley incorporating a ratchet and a security lock. The tie down device has a housing which encloses a pulley over which is reeved a plastic jacketed metallic stranded cable, a ratchet wheel and associated pawl, and a key operated lock. The housing is formed in two parts u

A tie down device having a pulley incorporating a ratchet and a security lock. The tie down device has a housing which encloses a pulley over which is reeved a plastic jacketed metallic stranded cable, a ratchet wheel and associated pawl, and a key operated lock. The housing is formed in two parts united by rivets, and is devoid of externally accessible tool operated fasteners such as screws. A crank handle affords a user mechanical advantage when imposing tension on the cable. In an alternative embodiment, the tie down device includes a mounting element for securing the tie down device to a transport vehicle. In one alternative embodiment, a hook is provided to suspend the tie down device from an environmental object.

대표청구항 ▼

1. A ratchet action security tie down device for securing at least one article under maintained tension, having a pulley for receiving a web reeved over and retained on said pulley for securing the article, a ratchet wheel operably connected to said pulley, a pawl disposed to engage said ratchet whe

1. A ratchet action security tie down device for securing at least one article under maintained tension, having a pulley for receiving a web reeved over and retained on said pulley for securing the article, a ratchet wheel operably connected to said pulley, a pawl disposed to engage said ratchet wheel and to constrain said pulley to rotate in only one direction and to oppose rotation in the opposite direction, and a security lock disposed selectively to enable release of tension exerted on the web and to prevent tension exerted on the web from being released. 2. The ratchet action security tie down device according to claim 1, wherein the web is a stranded metallic cable having a generally circular cross section. 3. The ratchet action security tie down device according to claim 1, wherein said cable has a plastic coating. 4. The ratchet action security tie down device according to claim 1, further comprising a metallic housing substantially enclosing said pulley, said ratchet wheel, said pawl, and said security lock. 5. The ratchet action security tie down device according to claim 4, wherein said housing is constructed to present no tool operated fasteners to the exterior thereof, said housing thereby being resistant to disassembly by tools. 6. The ratchet action security tie down device according to claim 4, further comprising a suspension hook disposed to suspend said housing from an environmental object. 7. The ratchet action security tie down device according to claim 1, further comprising a crank handle disposed in driving relation to rotate said ratchet wheel and said pulley and to provide mechanical advantage when rotating said ratchet wheel and said pulley. 8. The ratchet action security tie down device according to claim 1, further comprising a mounting element for mounting said ratchet action security tie down device to an environmental object. 9. In combination, a transport vehicle having a body, and a ratchet action security tie down device for securing articles under maintained tension to said transport vehicle, wherein said ratchet action security tie down device has a pulley, a ratchet wheel operably connected to said pulley, a pawl disposed to engage said ratchet wheel and to constrain said pulley to rotate in one direction and to oppose rotation in the opposite direction, a web reeved over and retained on said pulley, for securing down the articles, a security lock disposed selectively to enable release of tension exerted on the web and to prevent tension exerted on the web from being released, and a mounting element disposed to secure said ratchet action security tie dow n device to said transport vehicle. 10. The ratchet action security tie down device according to claim 9, wherein the web is a stranded metallic cable having a generally circular cross section. 11. The ratchet action security tie down device according to claim 9, wherein said cable has a plastic coating. 12. The ratchet action security tie down device according to claim 9, further comprising a metallic housing substantially enclosing said pulley, said ratchet wheel, said pawl, and said security lock. 13. The ratchet action security tie down device according to claim 9, wherein said housing is constructed to present no tool operated fasteners to the exterior thereof, said housing thereby being resistant to disassembly by tools. 14. The ratchet action security tie down device according to claim 9, further comprising a crank handle disposed in driving relation to rotate said ratchet wheel and said pulley and to provide mechanical advantage when rotating said ratchet wheel and said pulley.