Retractable tie-down assembly with fine tightness adjustment

Implements or apparatus for applying pushing or pulling force – Portable implements or apparatus for tensioning flexible... – Including either force transmitting – hand held and operated...

Patent

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Details

254223, 254364, 410100, B21F 900

Patent

active

060070536

ABSTRACT:
A retractable tie-down assembly includes a frame, a spool rotatably mounted to the frame, a strap wrapable on the spool, and a locking device. A holder bracket is pivotally connected to an axle of the spool. A catch member is mounted in the holder bracket. A spring includes a first end attached to the holder bracket and a second end attached to an end of the catch member to thereby bias the catch member to a position disengaged from the ratchet wheel. When the locking device is in a position engaged with a ratchet wheel on the spool and thus locks the spool against rotation in a pay out direction, and when the holder bracket is manually pivoted in a direction away from the locking device, the catch member is moved to engage with and thus exerts a force to the ratchet wheel such that the spool rotates in a retracting direction. Fine tightness adjustment of the strap is achieved by simple repeated reciprocating pivotal movements of the holder bracket.

REFERENCES:
patent: 2156062 (1939-04-01), Porter
patent: 2946563 (1960-07-01), Eaton
patent: 2991975 (1961-07-01), Alexander
patent: 4227286 (1980-10-01), Holmberg
patent: 4542883 (1985-09-01), Rutzki
patent: 4842458 (1989-06-01), Carpenter
patent: 5271606 (1993-12-01), Kamper
patent: 5282706 (1994-02-01), Anthony et al.
patent: 5443342 (1995-08-01), Huang
patent: 5542798 (1996-08-01), Rawdon et al.
patent: 5746192 (1998-05-01), Gissel

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