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. 18, 2017
Filed:
Apr. 12, 2013
Anders Johnsen, Borlange, SE;
Anders Johnsen, Borlange, SE;
TRACTIVE AB, Borlange, SE;
Abstract
A wall saw comprising:—a carriage ();—a saw arm () pivotally mounted to the carriage;—a rotatable spindle () rotatably mounted to the saw arm and configured for connection to a saw blade; and—an electric drive motor () for rotating the spindle. The rotor () of the drive motor comprises a rotor hub () which is operatively connected to the output shaft () of the drive motor through a safety clutch () so as to allow torque to be transmitted from the rotor hub to the output shaft via the safety clutch, the safety clutch being configured to allow mutual rotation between the rotor hub () and the output shaft () when said torque reaches a given threshold value. The safety clutch () is accommodated in a space inside the rotor hub ().