EP 0263281 B1 19901024 - PNEUMATIC BORING RAM
Title (en)
PNEUMATIC BORING RAM
Publication
Application
Priority
DE 3634579 A 19861010
Abstract (en)
[origin: US4840234A] A pneumatic ram boring machine (12) has an air-permeable hollow cylinder (2) with a sound absorbing and/or oil separating packing (9, 11) arranged in the exhaust air stream of the machine.
IPC 1-7
B25D 17/12; E21B 4/14; E21B 7/20; E21B 7/26; E21B 21/00; F01N 1/10
IPC 8 full level
E21B 11/02 (2006.01); B25D 17/12 (2006.01); E21B 4/14 (2006.01); E21B 7/20 (2006.01); E21B 7/26 (2006.01); E21B 21/00 (2006.01); F01N 1/08 (2006.01); F01N 1/10 (2006.01)
CPC (source: EP US)
B25D 17/12 (2013.01 - EP US); E21B 4/145 (2013.01 - EP US); E21B 7/206 (2013.01 - EP US); E21B 21/002 (2013.01 - EP US); F01N 1/082 (2013.01 - EP US); Y10S 173/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0263281 A1 19880413; EP 0263281 B1 19901024; AT E57644 T1 19901115; DE 3634579 A1 19880421; JP S63107686 A 19880512; US 4840234 A 19890620
DOCDB simple family (application)
EP 87112220 A 19870822; AT 87112220 T 19870822; DE 3634579 A 19861010; JP 25613187 A 19871009; US 10510487 A 19871005