Patent ID: 6152499
Filing Date: 2000-11-28
Classification: A61G,E05B,Y10S,Y10T

Abstract:
A lock comprising:an engaging member comprising a locking pin;a receiving member having an inner and an outer end, the receiving member comprising:a female element in the form of a sleeve having an inner and an outer end, said sleeve having a central axis and comprising an opening lying in a plane parallel to said central axis and on a periphery of said female element, said sleeve also comprising an elongated opening on a portion thereof, said elongated opening being located in the inner end and lying in a plane perpendicular to said central axis, said female element further comprising a longitudinal notch extending from the outer end of said female element to a side of said elongated opening;a male element having an inner end and an outer end, said inner end being formed as a hollow cylinder adapted to be inserted within said female element, said male element adapted to rotate with respect to said female element about an axis parallel to said central axis, said hollow cylinder being provided with a pear-shaped opening having a wider and a thinner portion, said pear-shaped opening lying in a plane normal to said central axis for receiving said locking pin, said hollow cylinder case comprising a blocking element on its periphery for maintaining the male element tightly secured within the female element; said outer end of male element including a keyway; andbiasing means for outwardly biasing said male element with respect to said female element,said lock having an open position and a closed position, said lock being in said open position when the wider portion of said pear-shaped opening of said male element and said opening of said female element are in registration for receiving a portion of said locking pin and said blocking element is set into an upper end of said elongated opening, said lock being in said closed position when said locking pin is engaged within said male element, said lock is brought from the open position to the closed position when said keyway is rotated at a predetermined position so that said locking pin is engaged with the thinner portion of said pear-shaped opening of said female element and said blocking element is brought to a lower end of said elongated slot.