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US 6,609,275 B1Granted
Strap tightener with an auto-pulling device
OwnerChia-Sheng Lininventor
Life of this patent
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Abstract
A strap tightener has an auto-pulling device connected to a seat. The auto-pulling device includes a housing and a reversing device. The reversing device is rotatably received in the housing. The reversing device has a reel received in the housing to connect with one end of a strap. A spiral power spring is connected between the housing and the reel. Consequently, the strap can be automatically wound around the reel after the strap tightener is used. To collect the strap is convenient and the operating time of collecting the strap is saved.
Claims6
A strap tightener apparatus comprising:
- a seat;
- a lever pivotally mounted to said seat by a rotatable shaft, said rotatable shaft having a slot extending therethrough, said lever pivotally movable between a first position and a second position;
- a ratchet means mounted to said lever and to said seat, said ratchet means for selectively allowing said rotatable shaft to rotate only in a single direction;
- and
- an auto-pulling device attached to said seat, said auto-pulling device comprising:
- a housing connected to said seat, said housing having a slot formed therein;
- a reversing means rotatably received in said housing, said reversing means comprising and annular reel received in said housing and a spiral power spring received in said reel, said power spring having a first end securely attached to said housing and a second end securely attached to an inner periphery of said reel;
- a first strap extending through said slot in said shaft of said lever and through said slot of said housing, said first strap having a first end wound around said reel and a second end extending outwardly of said seat, said second end having a first fastener affixed thereto, said reversing means for retracting said first strap when said lever is rotatably moved inwardly from said second position to said first position;
- and
- a second fastener mounted to said seat.
7 more elements
Dependencies are inferred from the claim text.