Anti-picking combination padlock
AssigneeThe Sun Lock Company Ltd.
InventorKarl Lai
Life of this patent
Estimating the term…
Abstract
A padlock including a lock body, a combination mechanism to control movement of a spindle within the lock body, at least one clutch mounted about the spindle each clutch having at least one extended-fin, and alignment of each of the at least one extended-fin with a corresponding gate in the lock body allows for movement of the spindle within the lock body. The padlock may also include a shackle having a long leg and a short leg, and the padlock is positionable between a locked mode in which the short leg of the shackle is positioned within the body and the movement of the spindle within the lock body is substantially limited, and an unlocked mode in which the short leg of the shackle is spaced apart from the body and movement of the spindle within the lock body is allowed.
Claims17
A padlock comprising:
- a body having at least one dial slot and at least one gate formed in the body and positioned adjacent to the at least one dial slot;
- a shackle having a long leg and a short leg, wherein at least the long leg or the short leg comprises a cutout formed therein;
- a bolt positioned within the body and configured for engagement with the cutout;
- at least one clutch disposed within the body, and each of the at least one clutch having at least one extended-fin;
- and
- a spindle extending through each of the at least one clutch;
- wherein each of the at least one extended-fin has a corresponding gate of the at least one gate so that alignment of each of the at least one extended-fin with the corresponding gate allows for rectilinear movement within the body of each of the at least one extended-fin into the corresponding gate;
- wherein the padlock is positionable between a locked mode in which the short leg of the shackle is positioned within the body and the bolt is engaged with the cutout, and an unlocked mode in which the short leg of the shackle is spaced apart from the body and the bolt is disengaged from the cutout;
- wherein each of the at least one clutch is configured for rotation about the spindle when the padlock is in the locked mode;
- wherein each of the at least one extended-fin comprises a pair of substantially parallel sides and an upper surface and a lower surface positioned adjacent to the parallel sides, and wherein the upper surface and lower surface intersect with each of the parallel sides at angles less than or greater than 90 degrees;
- and
- wherein at least one of the upper surface and the lower surface of at least one of the at least one extended-fin comprises a rounded edge.
Dependencies are inferred from the claim text.