Tire rasp blade
AssigneeB & J Manufacturing Company
InventorWayne E. Jensen
Life of this patent
Estimating the term…
Abstract
A tire rasp blade is provided with an elongated planar body having a working portion comprising a plurality of uniformly and closely spaced teeth which define an arcuate working perimeter. Each of the teeth has a base and a working edge and is separated from neighboring teeth by generally elliptical primary cutouts which are oriented normal to the tangent of the working perimeter. The teeth are preferably monolithic and of a uniform size and shape, and are both angularly set and laterally displaced relative to the plane of the blade body.
Claims17
A tire rasp blade for use in a tire buffing machine to remove rubber from a tire carcass, said tire rasp blade comprising:
- an elongated body adapted for assembly in a rotating hub of the tire buffing machine;
- said body having a working portion comprising a plurality of uniformly and closely spaced teeth, and said working portion also having an arcuate working perimeter protruding from the hub;
- each of said teeth having a base and a working edge and being separated from neighboring teeth by generally elliptical primary cutouts, said cutouts each being oriented generally normal to the tangent of said working perimeter, each of said teeth also having leading and trailing edges defined by said cutouts, said leading edge forming a leading angle with said working edge having a leading apex that points in the direction of rotation of said hub, and said trailing edge forming a trailing angle with said working edge having a trailing apex that points away from the direction of rotation of said hub, said leading apex and said trailing apex of every neighboring pair of teeth being located within less than 0.030 inch;
- and
- a first portion of said teeth being laterally displaced to one side of said body and a second portion of said teeth being laterally displaced to the other side of said body, and at least one of said teeth from each of said first and said second portions being angularly set relative to the plane of said body, said lateral displacement of said teeth being at an angle to the plane of said body between about 1.degree. and 7.degree., and said first and second portions together comprising all of said uniformly and closely spaced teeth.
A tire rasp blade for use in a tire buffing machine to remove rubber from a tire carcass, said tire rasp blade comprising:
- an elongated generally planar body adapted for assembly in a rotating hub of the tire buffing machine;
- said body having a working portion comprising a plurality of uniformly and closely spaced monolithic teeth, and said working portion also having an arcuate working perimeter protruding from the hub;
- each of said teeth having a base and a working edge and being separated from neighboring teeth by generally elliptical primary cutouts, said cutouts each being positioned generally normal to the tangent of said working perimeter and having a maximum width which is substantially no greater than the minimum width of said teeth, each of said teeth also having leading and trailing edges defined by said cutouts, said leading edge forming a leading angle with said working edge having a leading apex that points in the direction of rotation of said hub, and said trailing edge forming a trailing angle with said working edge having a trailing apex that points away from the direction of rotation of said hub;
- and
- a first portion of said teeth being laterally displaced to one side of said body and a second portion of said teeth being laterally displaced to the other side of said body, whereby said teeth form an angle to the plane of said body between about 1.degree. and 7.degree..
A method for forming a tire rasp blade for use in a tire buffing machine to remove rubber from a tire carcass, said tire rasp blade being constructed from a process comprising the steps of:
- providing an elongated generally planar blade body having an arcuate perimeter portion;
- forming a plurality of generally elliptical cutouts in said body along said arcuate perimeter portion, each of said cutouts being oriented generally normal to the tangent of said perimeter portion and being truncated at said perimeter portion, thereby defining a plurality of teeth having a base, a working edge, a leading edge and a trailing edge;
- said leading edge forming a leading angle with said working edge having a leading apex, and said trailing edge forming a trailing angle with said working edge having a trailing apex;
- said cutouts being uniformly and closely spaced such that the leading apex and the trailing apex of neighboring teeth are positioned in longitudinally close proximity in the plane of said body;
- laterally displacing one portion of said teeth to one side of said body and a second portion of said teeth to the other side of said body such that said teeth form an angle to the plane of said body between about 1.degree. and 7.degree..
Dependencies are inferred from the claim text.