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:
Jun. 30, 1992
Filed:
May. 06, 1991
Atlas Copco Tools AB, Stockholm, SE;
Abstract
A vibration damped hand held rotary grinding machine comprising a housing (10) with at least one handle (17, 18), a rotation motor (11), an output shaft (13) drivingly coupled to the motor and having a mounting (14) for attachment of a grinding wheel (15), and a sector-shaped non-resilient safe guard (19) which is rigidly attached to the housing (10) and surrounding partially the grinding wheel (15) and which has an arc-shaped rim portion (20) encircling partially the grinding wheel circumference. A vibration damping inertia device (22; 22a, 22b) is rigidly associated with the safe guard (19) on or adjacent the rim portion (20), such that the center of gravity of substantially all axial plane cross sections through the inertia device (22 22a, 22b) is located at a radius (R.sub.1) of at least 90% of the rim portion (20) radius (R). Preferably, the safe guard (19) is semicircular and th einertia device (22; 22a, 22 b) extends from both ends of the safe guard rim portion (20).