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:
May. 19, 1998
Filed:
Dec. 15, 1995
Michael M Stepan, Bothell, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
The invention provides a unique approach to solving a peck feeding problem in limited access areas restricting the drilling unit size. It uses a power transmission system which is comprised of a pinion gear driven by a motor source. The pinion gear drives a bevel gear that is free to travel along a polygon quill. A quill had is located on one end of the quill to house the drill. The opposing quill end is attached to a guide bushing assembly. The guide bushing assembly is connected to a bell crank mechanism that is actuated and controlled by a pneumatic piston and hydraulic speed control system. The power transmission system, and the pneumatic power transfer system combined produce a pecking cycle for drilling precision holes within a confined set-up space of 5.5 inches in a preferred embodiment. It preferably has a drill stroke up to 1 inch deep, and is capable of producing a 'pecking' action which is unique for right angle drilling equipment in limited access applications.