Screw guide in linked-screw tightener
US5839332A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1996 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Apr 19, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B27/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a linked-screw tightener in which linked screws held by a coupling belt at predetermined intervals is passed through a linked-screw guide passage provided near a leading end of and across a nose portion installed movably at the leading end of a linked-screw tightener body relative to a screwing direction, a foremost screw is fed into an open space between a pair of chuck pawls positioned in the substantially central part of the nose portion and capable of opening and closing in accordance with the movement of the nose portion relative to the linked-screw tightener body, and the supplied screw is driven with a driver bit, the screw guide unit includes: a foremost screw receiving port formed on the pair of chuck pawls wherein the foremost screw receiving port opens in the chuck pawls closing condition to allow the foremost screw to be fed into the open space between the pair of the chuck pawls; and a guide member disposed at the pair of the chuck pawls, for opening and closing the foremost receiving port to hold the foremost screw at the pair of the chuck pawls, wherein the guide member operates together the movement of the nose portion relative to the linked-screw tightener body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.