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. 18, 1986
Filed:
Dec. 04, 1984
Rudolf Eckhardt, Wesel, DE;
Hans-Christoph Neuendorf, Wesel, DE;
Horst Freilingsdorf, Remscheid-Lennep, DE;
Flachglas Aktiengesellschaft, Furth, DE;
Abstract
Drill apparatus, especially for drilling glass, with hydraulic and/or mechanically advancing, driven drill spindle, wherein the drill spindle is secured in a spindle carrier and is equipped at the end which is facing towards the workpiece with a drill, as well as being equipped with a countersink or the like drill which generally surrounds the drill, whereby the drill and the countersink drill are axially adjustable with respect to one another, in accordance with the preceding wear. The drill is connected in a drill carrier by way of adjustment threads. An automatic adjustment device is provided for the drill in the drill spindle, which adjustment device includes a mechanical, forward and reverse step motion device with a screw-type guide, and a hydraulic cylinder/piston actuating assembly for the step motion device. The hydraulic cylinder/piston actuating assembly can be supplied with hydraulic pressure medium through the drill spindle carrier and additional passages. An adjustment torque is imparted via the step motion device to the drill, whereby the drill is adjusted in its position in the adjustment threads.