Hidden shackle lock incorporating a “key-in-knob” (KiK) cylinder

A hidden shackle style lock comprising;

• a substantially cylindrical housing with a top surface, a bottom surface, and a curved side surface;
• a first cavity in the bottom surface extending part way along a thickness of the housing;
• a second cavity in the side surface intersecting with the first cavity;
• a sleeve slidably attached within the second cavity;
• and
• a shackle assembly fixedly attached to the sleeve;
• the shackle assembly including,
• a shackle member with locking features at one end and first mating features at an opposite end,
• a key-in-knob lock cylinder with a key hole at one end and second mating features at an opposite end, and
• a driver member axially positioned between an end face of the shackle member and an end face of the key-in-knob lock cylinder, the driver member including a first design feature on a first side and a separate second design feature on a second side that is opposite the first side, wherein the first design feature interfaces with the second mating features of the key-in-knob lock cylinder and the second design feature interfaces with the first mating features of the shackle.

The method of using a hidden shackle style lock having a key-in-knob cylinder as a locking mechanism comprising;

• slidably attaching a hollow sleeve within a first cavity of a housing of the lock;
• coupling a shackle having a locking feature to the sleeve;
• coupling a driver to the shackle, the driver including a first design feature on a first side and a separate second design feature on a second side that is opposite the first side, wherein the the second design feature is adapted to couple to the shackle;
• coupling a mating third design feature of the key-in-knob cylinder to the first design feature of the driver;
• fixedly attaching the key-in-knob cylinder to the sleeve;
• inserting a hasp with a hole into a second cavity of the housing;
• sliding the shackle through the hole in the hasp;
• and
• operating the locking mechanism to rotate the shackle and lockingly engage the locking feature to mating features in the housing.