Optics: measuring and testing – Shape or surface configuration
Reexamination Certificate
2007-11-13
2007-11-13
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
Shape or surface configuration
Reexamination Certificate
active
10931965
ABSTRACT:
A method of and an apparatus for determining tire shapes are provided which enable both an apparatus weight reduction and a determination accuracy improvement. The apparatus of the present invention includes: a portable base member; a non-contact displacement gage held on the base member so as to be freely movable along a predetermined scanning direction; a weight supported on the base member so as to be movable along the scanning direction; and means for symmetrically driving the displacement gage and weight while synchronizing them with each other. Using this apparatus, the method includes: setting the base member in proximity to a tire tread portion so that the displacement gage will scan the tread portion; allowing the displacement gage and weight to symmetrically move along the scanning direction while synchronizing them with each other; and determining the shape of the tread portion, based on an output from the displacement gage.
REFERENCES:
patent: 3918816 (1975-11-01), Foster et al.
patent: 5987978 (1999-11-01), Whitehead
patent: 2002/0011103 (2002-01-01), Kimbara et al.
patent: 2005/0058333 (2005-03-01), Kaneko et al.
patent: WO 9610727 (1996-04-01), None
Akanbi Isiaka O
Chowdhury Tarifur
Greer Burns & Crain Ltd.
The Yokohama Rubber Co. Ltd.
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