Patent · US Expired

Gripper apparatus for sheet-fed printing machines

US5542657A · kind A · utility

4Cited by

2References

9Claims

0Family size

Assignee

MAN Roland Druckmaschinen AG · DE

Inventors

Klemens Kemmerer · Seligenstadt, DE
Harald Bayer · Rodgau, DE
Valentin Gensheimer · Frankfurt am Main, DE

Key dates

Filing date	Jul 7, 1994
Grant date	Aug 6, 1996
Priority date	—
Expiry date	Jul 7, 2014

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F21/104
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A semishell-shaped gripper apparatus for sheet-fed printing machines includes a gripper of low mass, which is fastened without play on the gripper shaft and minimizes the sliding of the gripper tip on the printing carrier. This is achieved by having the gripper finger surround the gripper shaft in such a way that separate effective engagement surfaces are formed. The effective engagement surfaces are disposed on the gripper shaft with frictional engagement and, in conjunction with the resultant force, form a triangle of forces. The gripper holder has a depression running parallel to the gripper shaft connecting to the lower edge of a web on the gripper finger in a releasably positive-locking manner. The gripper tip has a raised holding surface which has tapering radii on its periphery.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.