EP 0046788 B1 19840314 - HYDRAULIC PRESS MECHANISM
Title (en)
HYDRAULIC PRESS MECHANISM
Publication
Application
Priority
FR 8005955 A 19800312
Abstract (en)
[origin: WO8102543A1] The mechanism permets to obtain successively a rapid feed stroke (C), and a working stroke with an important developped effort, for operations such as riveting or marking, the working stroke being started when the tool (16) comes into contact with the part to be pressed (25) A control rod (4) and a body (9) are movable along a same axis (3), means such as a valve (31) insuring the non permanent locking thereof. The rod (4) is integral with a primary piston (8) penetrating in a hydraulic circuit (10, 11) of the body (9); this circuit is, on the one hand, connected to an expansible sleeve (19) surrounding the body (9) and permitting the blocking of that body with respect to the frame (1), and on the other hand, to a chamber (12) wherein a secondary piston (15) is imparted with a sliding motion, biased by a spring (18) and integral with the tool (16).
IPC 1-7
IPC 8 full level
B21J 15/00 (2006.01); B21J 15/02 (2006.01); B21J 15/16 (2006.01); B21J 15/20 (2006.01); B21J 15/28 (2006.01); B30B 1/00 (2006.01); B30B 1/32 (2006.01); B30B 15/16 (2006.01)
CPC (source: EP US)
B30B 1/007 (2013.01 - EP US); B30B 15/161 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
WO 8102543 A1 19810917; AT E6610 T1 19840315; AU 547086 B2 19851003; AU 6783481 A 19810923; BR 8107434 A 19820105; CA 1163900 A 19840320; DE 3162570 D1 19840419; DK 502081 A 19811112; EP 0046788 A1 19820310; EP 0046788 B1 19840314; FR 2477960 A1 19810918; JP S57500275 A 19820218; NO 152997 B 19850923; NO 152997 C 19860108; NO 813816 L 19811111; US 4499728 A 19850219
DOCDB simple family (application)
FR 8100034 W 19810311; AT 81900640 T 19810311; AU 6783481 A 19810311; BR 8107434 A 19810311; CA 374820 A 19810407; DE 3162570 T 19810311; DK 502081 A 19811112; EP 81900640 A 19810311; FR 8005955 A 19800312; JP 50083281 A 19810311; NO 813816 A 19811111; US 31790281 A 19811030