Assembly for moving printing means of a printing machine
US4349284A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 1980 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | May 5, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19781
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing office machine in which a movable print head is driven by a device comprising a fixed, mounted lead screw and a cooperating nut member connected to an electric motor. The nut member is rotatably mounted in a carrier frame and comprises an inner tubular member which is journalled on the lead screw. An outer tubular member is journalled on the inner tubular member. An end part of the outer tubular member bears against a flange on the inner tubular member under friction. The two members are turnably interconnected by spring means, and the free ends of the members support rotatable bearings which bear on flanks of grooves cut in the lead screw. Each bearing cooperates with the groove flank which faces the respective end of the tubular member. The drive device has a very great freedom from play, and at the same time the friction prevailing between the nut member and the lead screw is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.