Land vehicles: wheels and axles – Wheel – Hub
Reexamination Certificate
1999-11-12
2001-07-31
Morano, S. Joseph (Department: 3617)
Land vehicles: wheels and axles
Wheel
Hub
C301S124200, C384S545000
Reexamination Certificate
active
06267452
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improved hidden type quick-release wheel hub assembly, and more particularly to a hidden type quick-release wheel hub assembly with a reinforcing arrangement to reinforce the structure.
2. Description of the Related Art
FIG. 5
of the drawings illustrates a typical quick-release wheel hub assembly that includes a hub
20
with an axial hole
21
, each end of the hub
20
including a compartment
22
and a shoulder
23
, two bearings
24
respectively received in the compartments
22
and respectively bearing against the shoulders
23
, and a shaft
25
extended through the bearings
24
and the axial hole
21
of the hub
20
. A nut
26
is threadedly engaged with an end of the shaft
25
.
FIG. 6
illustrates a sectional view of the quick-release wheel hub assembly. It is, however, found that the shaft
25
, as having a smooth peripheral surface, may be moved longitudinally relative to the bearings
24
when it is subjected to a relatively larger force or it rotates at high speed. This results in an unstable structure. Namely, the hub
20
might be disengaged from the shaft
25
and thus endangers the cyclist. In addition, the shaft
25
is generally tubular for installation of the quick-release and thus adversely affects its strength. Namely, the shaft
25
tends to bend when subjected to a larger force. The present invention is intended to provide an improved quick-release wheel hub assembly to solve these problems.
SUMMARY OF THE INVENTION
A quick-release wheel hub assembly in accordance with the present invention comprises a hub with an axial hole. The hub further includes a compartment defined in each of two ends thereof, a circular slot defined on the wall of one compartment thereof, and each end of the hub further including a shoulder. Two bearings are mounted in the compartments, respectively. Each bearing has an end that bears against the shoulder of an associated end. A shaft is extended through the axial hole of the hub and the bearings. A sleeve is mounted around the shaft and positioned between the bearings. The sleeve may reliably prevent disengagement of the hub from the shaft. In addition, the strength of the shaft is improved. A c-shaped ring is mounted in the circular slot and positioned beside the other end of one bearing. The c-shaped ring may fix the bearing, and prevent the bearing from dropping.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 1480565 (1924-01-01), Mottlau
patent: 2297960 (1942-10-01), Hood
patent: 4880280 (1989-11-01), Panzica et al.
patent: 5626401 (1997-05-01), Terry, Sr. et al.
patent: 5732593 (1998-03-01), Hwang et al.
patent: 5954355 (1999-09-01), Hsu
Morano S. Joseph
Nguyen Long Bao
Rosenberg , Klein & Lee
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