The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 1980
Filed:
Apr. 19, 1978
Paul Fitzpatrick, Southfield, MI (US);
Ex-Cell-O Corporation, Troy, MI (US);
Abstract
An abrading tool (20, 20a, 20b) is disclosed as having a tapered arbor (22) and an abrasive insert 24 including a helical element (28) with a plurality of coils (30) that receive the arbor in an axially incompressibly mounted relationship. An abrasive strip (32) of a helical shape on the coils performs a machining operation upon tool rotation. The abrasive strip on each coil is spaced from the abrasive strip on adjacent coils. Nuts (40, 44, 46) threaded on the arbor provide a means for adjustably positioning the abrasive insert axially along the arbor to control the diameter of each coil in order to initially size the insert and to subsequently compensate for wear of the abrasive strip. Different embodiments disclosed include a helical spacer (34, 36) which spaces the coils of the helical element, coils which are directly engaged with each other and define a helical groove (64) that receives a spacer (66) located between the abrasive strip on each coil, and passages (56, 58, 60, 62) through the arbor and the insert for feeding fluid to the abrasive strip.