Locking ratchet for a lashing mechanism
First Claim
Patent Images
1. A tie-down assembly for securing an article by a strap comprising:
- a frame;
a winding shaft journaled for rotation in said frame in a first payout direction and in an opposite second take-up direction whereby the strap is wound around the winding shaft in the take-up direction, and unwound from the winding shaft in the payout direction;
a rachet wheel having ratchet teeth rotatable with the winding shaft;
a handle associated with the winding shaft and movable from a second to a first position for rotating the winding shaft an incremental angle in the take-up direction while not rotating the winding shaft when moved from the first to the second position;
a spring biased handle pawl engaging the ratchet teeth to allow rotation of the winding shaft by the handle in the take-up direction and prevent rotation in the payout direction, the spring biased handle pawl being movable out of engagement with the ratchet wheel to allow strap payout; and
, a key operated latch mechanism for selectively locking the handle to the frame in the second position.
3 Assignments
0 Petitions
Accused Products
Abstract
A tie-down assembly for securing an article by a strap has a frame to which one end of the strap is immovably connected and a winding shaft about which the other end of the strap is wound and unwound. A handle pivoted to the frame engages ratchet teeth on the winding shaft to rotate the winding shaft in a strap take-up direction when the handle moves from a second to a first position while not rotating the winding shaft when the handle moves the first toward the second position. A lock mechanism actuated by a key is provided to positively and selectively lock the handle to the frame when the handle is in the second position.
-
Citations
11 Claims
-
1. A tie-down assembly for securing an article by a strap comprising:
-
a frame;
a winding shaft journaled for rotation in said frame in a first payout direction and in an opposite second take-up direction whereby the strap is wound around the winding shaft in the take-up direction, and unwound from the winding shaft in the payout direction;
a rachet wheel having ratchet teeth rotatable with the winding shaft;
a handle associated with the winding shaft and movable from a second to a first position for rotating the winding shaft an incremental angle in the take-up direction while not rotating the winding shaft when moved from the first to the second position;
a spring biased handle pawl engaging the ratchet teeth to allow rotation of the winding shaft by the handle in the take-up direction and prevent rotation in the payout direction, the spring biased handle pawl being movable out of engagement with the ratchet wheel to allow strap payout; and
,a key operated latch mechanism for selectively locking the handle to the frame in the second position. - View Dependent Claims (2, 3, 4, 5, 6, 9)
-
-
7. A retractable tie-down assembly for securing an article by a strap comprising;
-
a frame to which one end of the strap is immovably secured;
a winding shaft journaled for rotation in the frame and about which the strap is wound when the winding shaft is rotated in a take-up direction and unwound when the winding shaft is rotated in a payout direction;
a handle pivotally mounted to and manually rotatable relative to the frame between first and second positions;
engagement means for rotating the winding shaft in the take-up direction when the handle is moved from the second toward the first position while not rotating the winding shaft when the handle is moved from the first toward the second position; and
,locking means actuated by a key to positively lock said handle to said frame when said handle is in the second position. - View Dependent Claims (8)
-
-
10. In a retractable tie-down assembly for securing an article by a strap having first and second ends, a frame to which the first end of the strap is immovably secured, a rotatable spindle journaled in the frame and about which the second end of the strap is wound, and a handle for rotating the spindle, the improvement comprising:
a lock to positively lock the handle to the frame such that the handle cannot be moved relative to the frame by unauthorized persons. - View Dependent Claims (11)
Specification