Hinge system

A hinge system, comprising:

• a hinge pin having at least first, second and third cylinders, the second cylinder being of a smaller diameter than the first cylinder and larger diameter than the third cylinder, the first, second and third cylinders arranged directly adjacent each adjoining cylinder in order of decreasing size and about a common axis;
• a first leaf including an attachment portion and at least one elongated knuckle portion located on one edge of the attachment portion, the knuckle portion of the first leaf being axially continuous and having an axially extending bore having at least one section having a predetermined diameter;
• a second leaf including an attachment portion and at least one knuckle portion along one edge of the attachment portion, the knuckle portion of the second leaf having an axially extending bore, having at least one section having a predetermined diameter, coaxial with the bore of the knuckle portion of the first leaf;
• the bores of the knuckle portions of the first and second leaves defining an axially extending passage having at least first, second and third substantially cylindrical areas having different diameters that correspond to the at least first, second, and third cylinders of the hinge pin;
• the hinge pin extending through the passage defined by the knuckle portions of the first and second leaves to provide a pivotal connection between the first and second leaves wherein a diameter of the first cylinder of the hinge pin is greater than a diameter of the second cylinder of the hinge pin, and a diameter of the second cylinder of the hinge pin is greater than a diameter of the third cylinder of the hinge pin, wherein the knuckle portions of the first leaf alternate with the knuckle portions of the second leaf to define the passage, wherein the first leaf has at least first and second knuckle portions and the second leaf has at least one knuckle portion, the bore of the first knuckle portion of the first leaf having a diameter that corresponds to the first cylinder of the hinge pin, the bore of the second knuckle portion of the first leaf having first and second sections with first and second diameters, respectively, that correspond respectively to the second and third cylinders of the hinge pin, the bore of the knuckle portion of the second leaf having first and second sections with first and second diameters, respectively, that correspond respectively to the first and second cylinders of the hinge pin, to a diameter substantially equal to the diameter of the first cylinder of the hinge pin.

A hinge system, comprising:

• a hinge pin having at least first, second and third cylinders, the second cylinder being of a smaller diameter than the first cylinder and larger diameter than the third cylinder, the first, second and third cylinders arranged directly adjacent each adjoining cylinder in order of decreasing size and about a common axis;
• a first leaf including an attachment portion and at least one elongated knuckle portion located on one edge of the attachment portion, the knuckle portion of the first leaf being axially continuous and having an axially extending bore having at least one section having a predetermined diameter;
• a second leaf including an attachment portion and at least one knuckle portion along one edge of the attachment portion, the knuckle portion of the second leaf having an axially extending bore, having at least one section having a predetermined diameter, coaxial with the bore of the knuckle portion of the first leaf;
• the bores of the knuckle portions of the first and second leave defining an axially extending passage having at least first, second and third substantially cylindrical areas having different diameters that correspond to the least first, second, and third cylinders of the hinge pin;
• the hinge pin extending through the passage defined by the knuckle portions of the first and second leaves to provide a pivotal connection between the first and second leaves wherein a diameter of the first cylinder of the hinge pin is greater than a diameter of the second cylinder of the hinge pin, and a diameter of the second cylinder of the hinge pin is greater than a diameter of the third cylinder of the hinge pin, wherein the knuckle portions of the first leaf alternate with the knuckle portions of the second leaf to define the passage, wherein the first leaf has at least first and second knuckle portions and the second leaf has at least one knuckle portion, the bore of the first knuckle portion of the first leaf having first and second sections with first and second diameters, respectively, that correspond respectively to the first and second cylinders of the hinge pin, the bore of the second knuckle portion of the first leaf having a diameter that corresponds to the third cylinder of the hinge pin, the bore of the knuckle portion of the second leaf having first and second sections with first and second diameters, respectively, that correspond respectively to the second and third cylinders of the hinge pin.