Quick-fastening nut
US5032048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1990 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Jul 10, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19735
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A quick-fastening nut for location on an associated bolt comprises a plurality of internally-threaded, arcuate segments each including a part frusto-conical portion, and guide means reacting between the segments whereby the segments can be moved radially towards and away from one another between inoperative positions displaced outwardly of concentricity and operative positions substantially concentric with one another and whereby a frusto-conical surface is presented by the portions. The nut further comprises releasable means for retaining the segments in their operative positions, the arrangement being such that, in use, the frusto-conical surface defined by the portions engages a correspondingly-shaped mating surface of a component, such as the piston of a hydraulic bolt tensioner or a washer, bounding the bolt, relative axial movement between the nut and the component urging the segments radially inwardly into positive threaded engagement with the bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.