Abstract: A hidden shackle style lock is disclosed. The lock includes a substantially cylindrical housing having a top surface, a bottom surface, and a curved side surface. The lock also includes a first cavity on the bottom surface of the housing extending part way along a thickness of the housing, and a second cavity on the side surface intersecting with the first cavity. A hollow sleeve is slidably attached within the second cavity. The sleeve includes a first end face, a second end face, and a third cavity. The third cavity extends from the first end face to the second face and is substantially coaxial with the second cavity. A shackle having a first end and a second end is fixedly coupled to the first end face of the sleeve. The lock also includes an interchangeable core having a first locking mechanism and a second locking mechanism lockingly disposed within the third cavity, and coupled to the straight shackle.

Abstract: A hidden shackle style lock is disclosed. The lock has a substantially cylindrical housing having a top surface, a bottom surface, and a curved side surface. The lock also has a first cavity on the bottom surface of the housing which extends part way along a thickness of the housing, and a second cavity on the side surface intersecting with the first cavity. The lock further includes has a hollow sleeve slidably attached within the second cavity. The sleeve has a first end face, a second end face, and a third cavity. The third cavity extends from the first end face to the second face and is substantially coaxial with the second cavity. A shackle is coupled to the first end face of the sleeve. A core member with a locking mechanism is disposed within the third cavity and coupled to the shackle. A driver member is located between the core member and the shackle and couples the core member to the shackle.

Abstract: A semiconductor structure includes: a base layer formed with an array of recesses; a first epitaxial layer stacked on the base layer and extending into the recesses in the base layer; a patterned mask layer stacked on the first epitaxial layer; and a second epitaxial layer having a first portion that corresponds to the recesses in the base layer and that extends through the mask layer to contact the first epitaxial layer, and a second portion that is stacked on the mask layer.