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US 4,301,903 AGranted
Wheel hub with a freewheel
OwnerTakazi Nakanoinventor
Life of this patent
Estimating the term…
Abstract
A wheel hub with a freewheel which has a hub shaft passing through a hub proper adapted to rotate smoothly on steel balls and a gear ring equipped with a sprocket wheel fitted in said hub proper by a ratchet mechanism. The steel balls are held adjustably by both a shoulder of the hub proper and a screw cap, and a lock nut is screwed on the hub proper at the outside of the screw cap so as to prevent loosening of the screw cap.
Claims5
A wheel hub with a freewheel, comprising:
- a hub shaft having a hub portion on one end, a single tapered bearing surface thereon, and a threaded portion on the opposite end from said hub portion;
- a single annular array of steel balls against said bearing surface;
- a gear ring around said hub shaft and having a groove in the internal peripheral surface thereof in which said balls are engaged;
- a sprocket wheel on said gear ring;
- a ratchet means between said hub shaft and said gear ring and positioned along said hub shaft between said hub portion and said bearing surface;
- a screw cap threaded on said threaded portion of said hub shaft and having a further tapered bearing surface supporting said array of steel balls;
- and
- a lock nut on the threaded portion of said hub shaft against said screw cap to prevent loosening of said screw cap.
5 more elements
Dependencies are inferred from the claim text.