Padlock
First Claim
1. A padlock comprising:
- a housing;
a shackle having a long arm partly disposed in the housing, and a short arm extending from the long arm and located outside the housing;
wherein the short arm is rotatable to or off a confining position about the long arm; and
a block disposed on the housing and being movable with respect to the housing to either one of a first position and a second position;
wherein when the block is located in the first position and the short arm of the shackle is located in the confining position, a distal end of the short arm of the shackle is enclosed by a wall of the block and a wall of the housing and thereby the short arm is not allowed to rotate off the confining position about the long arm; and
when the block is located in the second position and the short arm of the shackle is located in the confining position, the distal end of the short arm of the shackle is no longer enclosed by the wall of the block and the wall of the housing and the short arm is free to rotate off the confining position about the long arm.
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Accused Products
Abstract
A padlock can be unlocked by an owner dialing an unlocking number or security personnel using a general key. The padlock includes a housing, a block, a shackle, a general locking device and a private locking device. The housing includes a first channel and a second channel therein. The block is inserted in the second channel. The block includes a receptacle therein. The shackle includes a long arm movably disposed in the first channel and a short arm for engagement with the receptacle of the block. The general locking device is disposed in the housing for locking and unlocking the long arm of the shackle. The private locking mechanism is disposed in the housing for controlling the block so that the block can be engaged with and disengaged from the short arm of the shackle.
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Citations
6 Claims
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1. A padlock comprising:
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a housing; a shackle having a long arm partly disposed in the housing, and a short arm extending from the long arm and located outside the housing;
wherein the short arm is rotatable to or off a confining position about the long arm; anda block disposed on the housing and being movable with respect to the housing to either one of a first position and a second position; wherein when the block is located in the first position and the short arm of the shackle is located in the confining position, a distal end of the short arm of the shackle is enclosed by a wall of the block and a wall of the housing and thereby the short arm is not allowed to rotate off the confining position about the long arm; and
when the block is located in the second position and the short arm of the shackle is located in the confining position, the distal end of the short arm of the shackle is no longer enclosed by the wall of the block and the wall of the housing and the short arm is free to rotate off the confining position about the long arm. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification