Screw connection especially for a heald shaft connecting rod in a loom
US6113330A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1997 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Apr 4, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03C9/0683
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.