EP 0011219 B1 19830525 - CONNECTION OF FLUID FLOW PATH-DEFINING COMPONENTS IN DOWN-THE-HOLE HAMMER DRILLS
Title (en)
CONNECTION OF FLUID FLOW PATH-DEFINING COMPONENTS IN DOWN-THE-HOLE HAMMER DRILLS
Publication
Application
Priority
GB 7844128 A 19781110
Abstract (en)
[origin: EP0011219A1] A connection for rod-like components, such as fluid flow path-defining components in a fluid powered free-piston down-the-hole hammer drill, comprising inner and outer components (7,5) having adjacent overlapping surfaces is characterised by at least one circumferential recess (9,11) in each of the overlapping surfaces, the recesses (9,11) being opposed to define one ore more annular spaces each accomodating an elastomeric sealing/retaining ring (8). The overlapping surfaces are preferably a close fit one within the other and have a plurality of said recesses (9,11) spaced-apart to accommodate correspondingly spaced rings (8) to distribute stresses between the components (7,5) and to maintain alignment thereof.
IPC 1-7
IPC 8 full level
F16B 7/00 (2006.01); E21B 4/06 (2006.01); E21B 4/14 (2006.01); E21B 17/04 (2006.01); E21B 17/07 (2006.01)
CPC (source: EP)
E21B 4/14 (2013.01); E21B 17/07 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT SE
DOCDB simple family (publication)
EP 0011219 A1 19800528; EP 0011219 B1 19830525; AT E3574 T1 19830615; DE 2965531 D1 19830707; ES 485775 A0 19801101; ES 8100418 A1 19801101; IN 152190 B 19831112; JP S5575092 A 19800606; ZA 795944 B 19801126
DOCDB simple family (application)
EP 79104336 A 19791106; AT 79104336 T 19791106; DE 2965531 T 19791106; ES 485775 A 19791107; IN 1169CA1979 A 19791109; JP 14597379 A 19791110; ZA 795944 A 19791106