초록 ▼

A quick-release skewer that secures the frame of a bicycle to the hub of the rear wheel in the usual manner and that includes provision for pivotally attaching the frame of a trailer to the rear axle of the bicycle. Both the nut and the cam housing of the quick-release skewer include integral posts

A quick-release skewer that secures the frame of a bicycle to the hub of the rear wheel in the usual manner and that includes provision for pivotally attaching the frame of a trailer to the rear axle of the bicycle. Both the nut and the cam housing of the quick-release skewer include integral posts that extend axially outward from the center of the rear wheel of the bicycle. A sleeve is mounted for rotation on each of the posts, and a trailer fork member is retained on each of the sleeves. In a preferred embodiment the sleeves are bobbin-shaped and low-friction bushings are interposed between the sleeves and the posts.

대표청구항 ▼

In a quick-release skewer of a type including a shaft having an axis, having a threaded portion at a first end of the shaft, and having an enlarged head at a second end of the shaft, including a nut engaging the threaded portion, the head having portions defining a hole extending completely through

In a quick-release skewer of a type including a shaft having an axis, having a threaded portion at a first end of the shaft, and having an enlarged head at a second end of the shaft, including a nut engaging the threaded portion, the head having portions defining a hole extending completely through the head in a direction perpendicular to the axis of the shaft, including a cam housing fitting closely around the head and having portions defining a hole that registers with the hole through the head, including a cam having a shaft extending through the hole in the cam housing and the hole in the head, the shaft of the cam having an eccentric portion for producing a limited motion of the cam housing along the shaft when the cam is rotated, the improvement comprising in combination: a first post, integral with the nut and extending outward from the nut coaxially with the shaft; a first sleeve riding on said first post; a second post, integral with the cam housing and extending outward from the cam housing coaxially with the shaft; and, a second sleeve riding on said second post, whereby said first sleeve and said second sleeve provide attachment surfaces that are pivotable about the axis of the shaft.