Patent ID: 7375277

Claim:
A dual bushing installation comprising: an outer metal bushing comprising a first body having a first end, an opposite end, and prior to installation, the outer metal bushing includes a single radial flange, the first end and the opposite end connected by a circumferentially seamless outer surface having an outer circumference and a circumferentially seamless inner surface having an inner circumference, the circumferentially seamless inner surface adjacent a first opening that extends through the first body, the single radial flange of the outer bushing proximate the first end of the outer metal bushing; an inner metal bushing comprising a second body having a first end, a second end, and prior to installation, the inner metal bushing includes a single radial flange, the first end and the second end connected by a circumferentially seamless outer surface having an outer circumference and a circumferentially seamless inner surface having an inner circumference, the circumferentially seamless inner surface of the inner bushing adjacent a second opening that extends through the second body, the single radial flange of the inner bushing proximate the second end of the inner metal bushing; wherein the outer circumference of the inner metal bushing substantially conforms with the inner circumference of the outer metal bushing such that the inner metal bushing is closely received by the first opening of the outer metal bushing; and wherein the inner metal bushing is rotationally and translationally fixed relative to the outer metal bushing because of a sufficient radial displacement initiated at the circumferentially seamless inner surface of the inner bushing, which provides a substantially equal, outwardly radial displacement throughout nearly all of a longitudinal length of the circumferentially seamless outer surface of the inner metal bushing and nearly all of a longitudinal length of the circumferentially seamless inner surface of the outer metal bushing such that substantially uniform stresses are provided along the longitudinal lengths of the inner bushing and the outer bushing.