Shaft for roller wheel

Details Shaft for roller wheel Shaft for roller wheel

2006-11-14

2006-11-14

Bellinger, Jason R. (Department: 3617)

Wheel substitutes for land vehicles

With lubrication

Including passage in or for roller structure

C305S136000

Reexamination Certificate

active

07134734

ABSTRACT:
The invention provides a shaft for a roller wheel which is excellent in strength and can achieve a weight saving. The invention provides a shaft for a roller wheel which rotatably supports a roller (3) outward fitted between both end portions (5a,5b) in a state in which both end portions (5a,5b) are fixed, and receives a load in a diametrical direction via the roller (3). Recess portions (6, 6) are provided on a side to which the load is not applied, on an outer peripheral surface corresponding to the roller (3). The load applying direction is a vertical direction. A cross sectional shape of the shaft in the recess portions (6, 6) is formed in a shape which is constituted by an upper circular arc portion (10) on an upper side, a lower circular arc portion (11) on a lower side, and a vertical connection portion (12) passing through a shaft axis (O) and connecting the upper circular arc portion (10) to the lower circular arc portion (11).

REFERENCES:
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patent: 4152031 (1979-05-01), Maguire
patent: 4209205 (1980-06-01), Gregg et al.
patent: 4815794 (1989-03-01), Becker et al.
patent: 5288143 (1994-02-01), Dester et al.
patent: 5803558 (1998-09-01), Ketting et al.
patent: 6851768 (2005-02-01), Takeno et al.
patent: 05-45338 (1993-06-01), None

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