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:
Oct. 11, 1977
Filed:
Apr. 16, 1976
Walter E Best, Indianapolis, IN (US);
R Gene McCullum, Indianapolis, IN (US);
Best Lock Corporation, Indianapolis, IN (US);
Abstract
A door knob is machined from solid stock to provide a tubular neck, an intermediate portion which is internally recessed to reduce its wall thickness, and a solid-section end portion having a large axial end opening which provides tool access for recessing the mid-portion and clears the pin tumbler lobe of a key-removable core mounted in the knob sleeve with its key plug concentric with the knob. The end opening has an axially-outward facing shoulder and an adjacent radially-inward opening groove. A knob locating, bevelled-edge ring lies against the shoulder with its edge partially closing the mouth of the groove. An end face member having a peripheral bevelled skirt is pressed into the end opening and against the edge of the ring so as to deform the skirt outward into the groove and thereby secure both the end face member and the ring in the knob. The end face member may have an opening for a core mounted in the knob sleeve, or for other usual knob accessories, or may completely close the end of the knob.