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:
Aug. 04, 1987
Filed:
Aug. 04, 1986
James A Michaud, Westbrook, ME (US);
Other;
Abstract
A chuck attachable to a drill powered by a reversible motor, is adapted for use in driving lag rods into wooden supports and has an axial bore extending therethrough which is partly threaded from one end to receive the machine-threaded end of a lag rod. A plug member is screwed into the threaded end of the bore of the chuck and has a formation enabling it to be so turned as to be seated at the inner end of the threads for engagement by the extremity of the machine threaded end of the lag rod. In order to so reduce the frictional engagement between the plug member and the extremity of the lag rod, the area of the engaged extremities is limited thus to ensure the release of the lag rod when the motor is reversed after the lag rod has been driven into the support to a desired extent.