EP 0284773 A3 19900228 - APPARATUS FOR ENLARGING TUBE ENDS
Title (en)
APPARATUS FOR ENLARGING TUBE ENDS
Publication
Application
Priority
DE 8702934 U 19870226
Abstract (en)
[origin: EP0284773A2] The apparatus for enlarging tube ends (9) has a die (1) which surrounds the tube end and has a recess (10) in accordance with the form of enlargement to be applied. Located in the interior of the die (1) is an expanding sleeve (4, 14) which can be expanded by an expanding mandrel (3) which can be displaced by a piston (15). When the expanding mandrel (3) is actuated, the tube (8) can be clamped in place between the die (1) and the expanding sleeve (4, 14). A punch (5) can be displaced on the expanding sleeve (4, 14). The tube end (9) is expanded when the punch (5) is displaced in the direction of the recess (10). <IMAGE>
IPC 1-7
IPC 8 full level
B21D 39/20 (2006.01); B21D 41/02 (2006.01)
CPC (source: EP)
B21D 39/20 (2013.01); B21D 41/02 (2013.01)
Citation (search report)
- [X] US 2352912 A 19440704 - PARKER ARTHUR L
- [X] US 2394841 A 19460212 - BUGG KENLY C
- [X] US 3200627 A 19650817 - LEO HOFFMANN
- [X] US 3412592 A 19681126 - MARCUS RAMSAY
- [A] US 2266795 A 19411223 - PARKER ARTHUR L
- [A] US 2941568 A 19600621 - OTTESTAD JACK B, et al
- [A] US 2464510 A 19490315 - HULL HENRY E
- [AD] DE 1918815 A1 19701015 - ZIMMER GUENTER
Designated contracting state (EPC)
CH DE ES FR IT LI
DOCDB simple family (publication)
DE 8702934 U1 19870409; DE 3865223 D1 19911107; EP 0284773 A2 19881005; EP 0284773 A3 19900228; EP 0284773 B1 19911002; ES 2025714 T3 19920401
DOCDB simple family (application)
DE 8702934 U 19870226; DE 3865223 T 19880224; EP 88102680 A 19880224; ES 88102680 T 19880224