EP 0377793 A3 19910320 - FLAT GATHERING SYSTEM COVER BREAKER
Title (en)
FLAT GATHERING SYSTEM COVER BREAKER
Publication
Application
Priority
US 29557589 A 19890111
Abstract (en)
[origin: EP0377793A2] In a flat gathering binding system it is necessary to use a cover breaker to apply pressure to the book and cover to form a sharp square fold on each side. A cover breaker control system includes a motor (108) which is coupled to a cover breaker carriage for varying the relative position of first and second movable cover breaker plates (104,106) which are used to apply the pressure. A controller calculates the difference between book thickness which the plates are set for and a desired thickness, and is operable to vary the relative positioning by a distance corresponding to this difference so that when the plates are driven to break the cover they are spaced a distance apart according to the desired thickness.
IPC 1-7
IPC 8 full level
B42C 11/02 (2006.01); B42C 13/00 (2006.01)
CPC (source: EP)
B42C 13/003 (2013.01)
Citation (search report)
- [Y] US 4121818 A 19781024 - RILEY WAYNE A, et al
- [Y] US 3451082 A 19690624 - SARRING ERNEST J
- [A] US 3771185 A 19731113 - THORP J, et al
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0377793 A2 19900718; EP 0377793 A3 19910320; JP H02233297 A 19900914
DOCDB simple family (application)
EP 89118896 A 19891011; JP 114890 A 19900109