Rasp blade with cutting teeth laterally displaced from a...

Cutters – for shaping – File or rasp

Reexamination Certificate

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C407S029130, C407S029140

Reexamination Certificate

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10752039

ABSTRACT:
A tire rasp blade made with an arcuate shape having a planar body with cutting teeth at the outer working edge. The cutting teeth extend laterally relative to the planar body in alternating sets of curved sections. The curved sections preferably form a sinusoidal curve along the outer working edge. The tire rasp blade is made by initially forming an arcuate blade of planar material that has an outer periphery of varying radii from a center point of the arcuate blade; then cutting teeth are formed at the varying radii of the working edge of the planar material; and then an outer portion of the planar material is deformed laterally in opposite directions to form alternating, oppositely curved sections, with the cutting teeth all lying approximately at the same circumferential radius so that they all contact the tire to be buffed.

REFERENCES:
patent: 2896309 (1959-07-01), Jensen
patent: 3074148 (1963-01-01), Hemmeter
patent: 3082506 (1963-03-01), Jensen
patent: 3618187 (1971-11-01), Jensen
patent: 3680185 (1972-08-01), Wood
patent: 3747177 (1973-07-01), Jensen
patent: 3879825 (1975-04-01), Jensen et al.
patent: 4019234 (1977-04-01), Jensen et al.
patent: 4021899 (1977-05-01), Jensen
patent: 4059875 (1977-11-01), Jensen
patent: 4091516 (1978-05-01), Jensen et al.
patent: 4336640 (1982-06-01), Willinger
patent: 4747194 (1988-05-01), Wood et al.
patent: 4902313 (1990-02-01), Penter
patent: 5033175 (1991-07-01), Jensen
patent: 5054177 (1991-10-01), Jensen
patent: 5075942 (1991-12-01), Jensen
patent: 5283935 (1994-02-01), Jensen
patent: 5301406 (1994-04-01), Pincott
patent: 5461762 (1995-10-01), Jensen
patent: 5504981 (1996-04-01), Jensen et al.
patent: 5647698 (1997-07-01), Jensen
patent: 6554547 (2003-04-01), Collins
patent: 2002/0164216 (2002-11-01), Collins
patent: 2003/0072623 (2003-04-01), Stanfield
patent: 199958291 (2000-05-01), None
Understanding Retreading, International Tire & Rubber Association Foundation, Inc., 2001.

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