Patent ID: 6508086
Filing Date: 2003-01-21
Classification: E05B,Y10T

Abstract:
A shackle lock comprising:a lock casing having a lock core chamber, a lock core opening for access to said lock core chamber and aligned with said lock core chamber in a first direction, a first shackle chamber, a first shackle hole for access to said first shackle chamber and aligned with said first shackle chamber in a second direction parallel to the first direction, a second shackle chamber, a second shackle hole for access to said second shackle chamber and aligned with said second shackle chamber in a third direction transverse to the second direction a first channel extending in a fourth direction transverse to said first and second directions for communicating said lock core chamber and said first shackle chamber, and a second channel extending in the second direction for communicating said first shackle chamber and said second shackle chamber; a lock core received in said lock core chamber and having a latch member, said lock core being operable for moving said latch member between a locking position in which said latch member extends through said first channel and projects into said first shackle chamber, and an unlocking position, in which said latch member is moved out of said first shackle chamber; and a shackle unit including first and second shackle connecting members and a flexible elongated shackle portion with two opposite ends connected respectively to said first and second shackle connecting members, said first shackle connecting member being extendible into said first shackle chamber via said first shackle hole and being formed with a locking groove for engaging said latch member when said latch member is moved to the locking position, said second shackle connecting member being provided with a spring-loaded retaining member and being extendible into said second shackle chamber via said second shackle hole to enable said retaining member to extend into said second channel for engaging said lock casing so as to retain said second shackle connecting member on said lock casing, said locking groove in said first shackle connecting member being disengaged from said latch member when said latch member is moved to the unlocking position, thereby permitting removal of said first shackle connecting member from said first shackle hole, said retaining member on said second shackle connecting member being accessible by means of a tool which is inserted into said first shackle hole when said first shackle connecting member is removed from said first shackle hole and being adapted to be actuated by the tool for disengaging from said lock casing in order to permit removal of said second shackle connecting member from said lock casing via said second shackle hole; wherein said second shackle connecting member of said shackle unit is formed with a slot, said retaining member including a retaining block extending into said slot and a biasing spring received in said slot for biasing said retaining block to extend out of said slot and into said second channel so as to engage said lock casing, said retaining block being adapted to be depressed by the tool for retracting into said slot so as to permit removal of said second shackle connecting member from said second shackle hole.