EP 1421311 A1 20040526 - FREEING OF SEIZED VALVES
Title (en)
FREEING OF SEIZED VALVES
Title (de)
LÖSEN VON FESTSITZENDEN VENTILEN
Title (fr)
DEBLOCAGE DE SOUPAPES GRIPPEES
Publication
Application
Priority
- GB 0203917 W 20020823
- GB 0120496 A 20010823
Abstract (en)
[origin: GB2378997A] An apparatus for freeing of seized valves is positioned over a valve stem 10 and comprises a collar 23 having fingers 24, a further collar 26 having fingers 28 engages fingers 24 and causes fingers 24 with teeth 30 to flex and grip boss 12, a partially threaded 32 shank 20 formed into an impact head 22 is connected to a device for turning shank 20, and a threaded recess 34 connects a vibrating device which may be a powered hammer to impart vibration in both directions of the stem 10 longitudinal axis. Another embodiment (fig 3) comprises a drive plate, a guide plate which retains an impact head, a boss for attaching a combined vibration and torque device and retainer plates secured by pins which with wedge members and jaws engage stem boss 12. Another embodiment (fig 6) comprises a cap attached to stem boss 12 and has apertures in opposed walls which align with an aperture drilled through the stem boss 12 for a bolt to secure the cap and stem 10 together. Another embodiment (fig 10) comprises a wheel secured by a nut to stem boss 12, a shank attached to the nut and adapted for attaching a torque and vibration device, and a cross piece having arms which engage spokes of the wheel.
IPC 1-7
IPC 8 full level
F16K 1/00 (2006.01); B25B 27/02 (2006.01); B25B 27/24 (2006.01); F16K 29/00 (2006.01); F16K 51/00 (2006.01)
CPC (source: EP KR)
B25B 9/00 (2013.01 - EP); B25B 13/44 (2013.01 - EP); B25B 13/48 (2013.01 - EP); B25B 27/02 (2013.01 - EP); B25B 27/24 (2013.01 - KR); F16K 29/00 (2013.01 - EP); F16K 31/44 (2013.01 - EP)
Citation (search report)
See references of WO 03019057A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
GB 0120496 D0 20011017; GB 2378997 A 20030226; AR 036286 A1 20040825; BR 0212709 A 20040803; CN 1545602 A 20041110; EP 1421311 A1 20040526; EP 2278201 A1 20110126; JP 2005501210 A 20050113; KR 20040041584 A 20040517; MX PA04001692 A 20040531; NO 20040734 L 20040220; RU 2004108091 A 20050527; WO 03019057 A1 20030306; ZA 200402041 B 20050307
DOCDB simple family (application)
GB 0120496 A 20010823; AR P020103167 A 20020823; BR 0212709 A 20020823; CN 02816452 A 20020823; EP 02755250 A 20020823; EP 10183295 A 20020823; GB 0203917 W 20020823; JP 2003523875 A 20020823; KR 20047002673 A 20020823; MX PA04001692 A 20020823; NO 20040734 A 20040220; RU 2004108091 A 20020823; ZA 200402041 A 20040315