Transcript
US 20070281590A1
(19) United States
(2) Patent Application Publication (10) Pub. No.: US 2007/0281590 A1 (43) Pub. Date:
Friel, SR. et al. (54) APPARATUS FOR PRECISION STEELING/CONDITIONING OF KNIFE EDGES
(60) Provisional application No. 60/568,839, filed on May 6, 2004. Provisional application No. 60/457,993, filed on Mar. 27, 2003.
(76) Inventors: Daniel D. Friel SR., Greenville, DE
(US); Robert P. Bigliano, Wilmington, DE (US) Correspondence Address: Connolly Bove Lodge & Hutz LLP
Dec. 6, 2007
Publication Classification
(51) Int. Cl. B24B 3/54 B24B 9/04
(2006.01) (2006.01)
(52) U.S. Cl. .............................................. 451/45; 451/112
P.O. Box 2207
Wilmington, DE 19899–2207 (US)
(21) Appl. No.:
11/839,650
(22) Filed:
Aug. 16, 2007 Related U.S. Application Data
(63) Continuation-in-part of application No. 11/123,959, filed on May 6, 2005, and which is a continuation in-part of application No. 10/803,419, filed on Mar. 18, 2004, now Pat. No. 7,235,004.
(57)
ABSTRACT
A multi-stage sharpener includes at least one motor driven abrasive sharpening stage and one non-motor driven condi tioning stage. The conditioning stage has a non-abrasive hardened surface and at least one precision knife guide which has a planar guide surface for creating a microscopic serration along the edge of a blade which had been sharp ened in the first stage sharpening station. The sharpener may also include a third stage motor driven finishing stage. Alternatively, the conditioning stage can be incorporated as the knife edge modifying stage of a manual sharpener.
Patent Application Publication Dec. 6, 2007 Sheet 1 of 12
A'zor. 2.
Žiº
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 2 of 12
º 5% for Ar?)
*4
3–0 | 4 ?º \R.
CZ
US 2007/0281590 A1
Fior. 10.
%%
Patent Application Publication Dec. 6, 2007 Sheet 3 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 4 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 5 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 6 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 7 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 8 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 9 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 10 of 12
2=
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 11 of 12
US 2007/0281590 A1
Patent Application Publication Dec. 6, 2007 Sheet 12 of 12
#9:36 l F}
