EP 3851245 A1 20210721 - JIG ASSEMBLY FOR SHARPENING MOWER BLADES
Title (en)
JIG ASSEMBLY FOR SHARPENING MOWER BLADES
Title (de)
JIG MONTAGE ZUM SCHÄRFEN VON MÄHERMESSERN
Title (fr)
MONTAGE DE GABARIT POUR AFFÛTAGE DES LAMES DE TONDEUSE
Publication
Application
Priority
- US 201762468717 P 20170308
- EP 18764937 A 20180302
- US 2018020636 W 20180302
Abstract (en)
A jig assembly for holding a mower blade and for controlling movement of a grinding tool having a grinding wheel during a sharpening operation on a cutting edge of the mower blade. The assembly comprises a mast, a fixture portion mounted to said mast, and a jig portion pivotally mounted to said mast. The fixture portion further comprises at least one stop limiting movement of the mower blade along a work-supporting surface. A leading edge of the mower blade rests against said stop during the sharpening operation. An intersection axis moves along an arcuate path in a second plane that is normal to said first plane, wherein said intersection axis and a fixture pivot axis are spaced a first distance from one another along a third axis normal to both of said intersection axis and said fixture pivot axis. During the pivoting movement of said fixture portion said intersection axis moves over a range of distances from said third plane, an absolute value of a distance between endpoints of said range defining a second distance, and wherein said second distance is less than one third of said first distance.
IPC 8 full level
B24B 3/36 (2006.01); B24B 3/42 (2006.01); B24B 23/00 (2006.01)
CPC (source: EP US)
B24B 3/365 (2013.01 - EP US); B24B 3/42 (2013.01 - EP); B24B 23/005 (2013.01 - EP US); B24B 41/06 (2013.01 - US)
Citation (applicant)
US 9102031 B2 20150811 - PAGE JAMES HERBERT [US]
Citation (search report)
- [A] US 2008210056 A1 20080904 - CLARK RANDEL R [US], et al
- [A] US 2627142 A 19530203 - PICKEL JAMES M
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2018164950 A1 20180913; AU 2018230571 A1 20190919; AU 2018230571 B2 20230615; CA 3053246 A1 20180913; CA 3053246 C 20231205; EP 3592503 A1 20200115; EP 3592503 A4 20200325; EP 3592503 B1 20210519; EP 3851245 A1 20210721; EP 3851245 B1 20230503; US 2020254582 A1 20200813
DOCDB simple family (application)
US 2018020636 W 20180302; AU 2018230571 A 20180302; CA 3053246 A 20180302; EP 18764937 A 20180302; EP 21160765 A 20180302; US 201816347393 A 20180302