EP 0291215 A3 19900110 - GASKET JOINT TIGHTENING
Title (en)
GASKET JOINT TIGHTENING
Publication
Application
Priority
US 4844287 A 19870511
Abstract (en)
[origin: EP0291215A2] An electric drive system applies rotational force to and threadably advances a fastener in a fastener and gasket assembly. A micro processor unit continuously compares the applied torque to a torque control limit value. When the torque control limit is reached the drive system power is reduced. After a preselected time pause the drive system applies at least one retorque pulse. When a predetermined quantity of retorque pulses have been applied, the tensioning operation is terminated.
IPC 1-7
IPC 8 full level
B25B 23/14 (2006.01); B25B 23/147 (2006.01); B25B 23/151 (2006.01); F16J 15/00 (2006.01)
CPC (source: EP)
B25B 23/147 (2013.01)
Citation (search report)
- [X] DE 3230642 A1 19840223 - VOLKSWAGENWERK AG [DE]
- [A] DE 3212038 A1 19821111 - INT HARVESTER CO [US]
- [A] DE 3010044 A1 19810924 - BAYERISCHE MOTOREN WERKE AG [DE]
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0291215 A2 19881117; EP 0291215 A3 19900110; JP S6420978 A 19890124
DOCDB simple family (application)
EP 88303962 A 19880429; JP 11268888 A 19880511