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:
Jan. 09, 2007
Filed:
Dec. 08, 2005
Mohammad A. Jamnia, Chicago, IL (US);
Patricia H. Parker, Midlothian, IL (US);
William L. Bollig, Elk Grove Village, IL (US);
Chadd Berkun, Highland Park, IL (US);
Marjavis J. Matthis, Chicago, IL (US);
Mohammad A. Jamnia, Chicago, IL (US);
Patricia H. Parker, Midlothian, IL (US);
William L. Bollig, Elk Grove Village, IL (US);
Chadd Berkun, Highland Park, IL (US);
Marjavis J. Matthis, Chicago, IL (US);
Hu-Friedy Mfg. Co., Inc., Chicago, IL (US);
Abstract
A torque wrench for preventing transmission of torque in excess of a threshold level to avoid damage to replaceable scaler tips and hand pieces of ultrasonic dental instruments. The torque wrench has a housing with a core seated therein, with a cam mechanism or spring engagement between the core and the housing, such that the core may remain stationary when the housing is rotated passed the threshold level of torque. The core has an axial bore to receive a connecting shaft of a scaler tip, such that a working end and a functional shank of the scaler tip are received in a chamber of the housing, with the housing acting as an isolation cage for the scaler tip.