Patent ID: 6216434
Filing Date: 2001-04-17
Classification: F16G

Abstract:
Chain lock for link chains, said chain lock having two essentially U-shaped lock parts which are releasably connected to each other; each of said lock parts having an inner limb and an outer limb, said said inner and outer limbs having ends, said inner and outer limbs having mutually facing sides; said inner and outer limbs of one of said lock parts being connected, respectively, to said outer and inner limbs of the other one of said lock parts in a closed position of the lock by three pairs of holding teeth arranged on said mutually facing sides of said respective inner and outer limbs of said lock parts, one said pair of holding teeth being arranged in a region at the end of each of said outer limbs, another said pair of holding teeth being arranged in a region at the end of each of said inner limbs, and a central pair of holding teeth being disposed between said pairs of holding teeth at said ends of said inner and outer limbs; and a supporting and locking element for the lock parts arranged between said inner limbs in a region of said holding teeth of said central pair; said holding teeth of said central pair (6,9) being stronger than the holding teeth of said other pairs, said holding teeth of said central pair having a greater height (H) than that of the holding teeth of said pair arranged at each end of said outer limbs; a central supporting zone (19) defined in a region at which flanks of the respective holding teeth of each said pair of holding teeth engage with each other, and at least cavity provided on each side of each said central supporting zone, said supporting zone extending over part. of the height of the holding teeth for transmitting longitudinal forces; characterized in that the holding teeth (5, 8) of said pair arranged at each end of the inner limbs (4) have a greater height (H) than the holding teeth (7, 10) of said pair arranged at each end of the outer limbs (3); and that each said central supporting zone (19) extends, at a maximum, over a third of the height of the holding teeth (5-10) of each said respective pair.