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:
Sep. 05, 2000
Filed:
Apr. 04, 1997
Fritz Rupflin, Lindau, DE;
Lindauer Dornier Gesellschaft mbH, Lindau, DE;
Abstract
A screw connection especially for heald shaft rods in a loom, includes a countersunk flathead female threaded nut and a countersunk flathead male threaded screw that engages the nut. To secure the nut against rotation when it is inserted into a stamped conical recess, an outer circumferential cylindrical section of the nut is provided with serrations that engage the edge of the stamped conical recess with a location-fit or press-fit, or friction-fit, whereby the screw can be conveniently connected to the nut, for example for clamping a roller bearing ring between two fork ends of a heald shaft connecting rod. The serrations on the outer surface of the female threaded nut have a first transition area (T1) that forms a lead-in first ramp (R1) for guiding the nut into a countersunk recess. The serrations also have a second transition area (T2) that leads onto a second ramp (R2) formed by a conical surface (3') of the female threaded nut for centering the nut in the conical recess and for maintaining the nut centered even if the screw is loosened.