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:
Nov. 20, 1984
Filed:
Feb. 22, 1983
Walter Sticht, Attnang, AT;
Gerhard Schwankhart, Attnang, AT;
Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H., Attnang, AT;
Abstract
An apparatus for driving a screw into a workpiece, which comprises a support stand, a rotating drive mounted on the support stand, a replaceable flywheel mass, a coupling between the rotating drive and the flywheel mass for transmitting a rotary motion from the drive to the flywheel mass, a holder for a screwdriver keyed to the flywheel mass for rotation therewith whereby the screw may be driven into the workpiece in a screw driving direction, an adjustment drive for adjustably positioning the holder in relation to the rotating drive in said direction, a device for blocking a recoil of the holder in a direction opposite to the screw driving direction, the recoil blocking device being arranged between the support stand and the holder, and a control for selectively operating the recoil blocking device at least during the recoil of the holder.