Pneumatic nut installation tool
US5165311A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Jun 17, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A pneumatic nut installation tool has a plunger assembly which advances from a retracted position near the rear of the tool through a nut pickup station to an extended position extending from the front of the tool. A nut shuttle delivers a nut in front of the plunger assembly before it reaches the nut pickup station and retracts away from the nut pickup station before the plunger assembly moves through that station. The nut is picked up on an assembly that includes a split spring ring which engages the bore of the nut. The spring ring is mounted on a fixed member, which also includes a hexagonal key for preventing rotation of a bolt as the nut is threaded onto it. A rotating nut driver moves over the outside of the nut picked up by the nut pickup assembly for threading the nut onto a bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.