Abrading – Accessory – Guard or housing
Patent
1997-06-09
1998-06-16
Morgan, Eileen P.
Abrading
Accessory
Guard or housing
451359, 451454, 83546, B23B 2300
Patent
active
057660620
ABSTRACT:
A portable power tool for operating a wheel type grinding or cutting working implement comprises a housing (10), a rotating output spindle (11) with a working implement supporting flange (14), a safety guard (16) adjustably supported on a guide flange (15) on the housing (10), and a selectively operable arresting device (18) for positively engaging lock openings (20) on the safety guard (16) for locking the latter in alternative positions relative to the housing (10), wherein the support flange (14) is provided with a number of peripheral indentations (21), and the arresting device (18) comprises a lock bolt (19) which is longitudinally shiftable between a first position in which it engages either one of the lock openings (20) on the safety guard (16), a second position in which it engages either one of the lock openings (20) on the safety guard (16) as well as either one of the support flange (14) indentations (21), and a third position in which it neither engages anyone of the safety guard (16) lock openings (20) nor anyone of the support flange (14) indentations (21). A spring means (28, 29) is provided to bias the lock bolt (19) toward the first position.
REFERENCES:
patent: 3673744 (1972-07-01), Oimoen
patent: 4891915 (1990-01-01), Yasuda
patent: 4924635 (1990-05-01), Rudolf et al.
patent: 5237781 (1993-08-01), Demetrius
patent: 5518442 (1996-05-01), Clowers et al.
Atlas Copco Tools AB
Morgan Eileen P.
LandOfFree
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