초록 ▼

A lock mechanism is disclosed in which a hollow cylindrical housing is provided with at least one interior longitudinal slot. A cylinder having a longitudinal keyway is inserted into the housing and an endpiece having at least one radial groove and one circumferential groove is attached to the housi

A lock mechanism is disclosed in which a hollow cylindrical housing is provided with at least one interior longitudinal slot. A cylinder having a longitudinal keyway is inserted into the housing and an endpiece having at least one radial groove and one circumferential groove is attached to the housing. At least one tumbler is pivotably mounted within the cylinder on an axis transverse to the cylinder. The tumbler has a locking edge sized and positioned to extend into the longitudinal groove in the housing when the tumbler is in a locked position and to be within the cylinder when the tumbler is in an unlocked position. The tumbler also has a tab sized and positioned so as to fit within the radial groove of the endpiece when the tumbler is in a locked position, and to align with and be capable of traveling through the circumferential groove of the endpiece when the tumbler is in an unlocked position. A keying edge is provided on the tumbler which has a given slope relative to a center line through the keyway and which extends into the keyway. The tumbler is spring biased to a locked position. It is moved to an unlocked position by the insertion of a key having a surface which is oriented and sloped to engage the keying edge of the tumbler and rotate the tumbler to an unlocked position.

대표청구항 ▼

A lock mechanism comprising a. a hollow cylindrical housing having an outer surface, an inner surface and at least one longitudinal groove cut into its inner surface, b. a face plate having a key hole therein and attached to one end of the housing, c. a cylinder having a longitudinal keyway and inse

A lock mechanism comprising a. a hollow cylindrical housing having an outer surface, an inner surface and at least one longitudinal groove cut into its inner surface, b. a face plate having a key hole therein and attached to one end of the housing, c. a cylinder having a longitudinal keyway and inserted into the housing, so that the keyway is aligned with the key hole, d. an endpiece having a face and attached at its face to the housing opposite the face plate and having at least one circumferential groove and at least one radial groove cut in its face, e. four tumblers (i) pivotably mounted at approximately 90°intervals to the cylinder on an axis transverse the cylinder, (ii) having a locking edge sized and positioned so as to extend into the longitudinal groove in the housing when the tumbler is in a locked position, and to be within the cylinder when the tumbler is in an unlocked position, (iii) having at least one tab sized and positioned so as to fit within a radial groove of the endpiece when the tumbler is in a locked position and to align with and be capable of traveling through a circumferential groove in the endpiece when the tumbler is in an unlocked position, and (iv) having a keying edge which has a given slope relative to a center line through the keyway and which extends into the keyway, said tumblers being sized and positioned to be able to pivot from a locked position to an unlocked position; and f. a resilient means attached to the tumbler to bias the tumbler toward a locked position.