Method and apparatus for screwing a nut onto a stud
US5898986A · kind A · utility
0Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Nov 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53061
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
To align an aperture (16) in a nut (12) with a hole (18) in a threaded stud (14), the nut (12) is rotated on the stud (14) to move the aperture (16) over the hole (18). Light is projected into the aperture (16) as the aperture (16) approaches the hole (18). The light is sensed when it projects from the aperture (16) through the hole (18) upon movement of the aperture (16) into alignment with the hole (18). Rotation of the nut (12) is stopped in response to sensing of the light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.