EP 0715932 B1 20011114 - Method and apparatus for adjusting the stroke of a non-compressible fluid-actuated percussion device
Title (en)
Method and apparatus for adjusting the stroke of a non-compressible fluid-actuated percussion device
Title (de)
Verfahren und Vorrichtung zum Einstellen des Schlaghubes einer, von einem inkompressiblen Fluid angetriebenen, Schlagvorrichtung
Title (fr)
Procédé et appareil pour la régulation de la course de frappe d'un appareil à percussion mû par un fluide incompressible sous pression
Publication
Application
Priority
FR 9415020 A 19941208
Abstract (en)
[origin: EP0715932A1] The regulator consists of a piston (1) which moves inside a cylinder between upper (8) and lower (9) chambers which are fed in sequence with a high-pressure fluid by a distributor (4) linked to a control member allowing the piston stroke to be varied. The regulator incorporates a slide valve (13) with a return spring (9), located inside a cylinder with one of its faces capable of being subjected to a fluid pressure. The regulator is able, during the piston rebound phase following an impact, to establish the presence of an instantaneous flow of fluid from the upper chamber (8) to the feed circuit (5) at a pressure determined from the pressure differential between the two circuits. In the event of a flow being detected, fluid is fed under pressure to the slide valve so that the stroke of the piston is increased.
IPC 1-7
IPC 8 full level
CPC (source: EP KR US)
Designated contracting state (EPC)
AT BE CH DE ES GB IT LI NL SE
DOCDB simple family (publication)
EP 0715932 A1 19960612; EP 0715932 B1 20011114; AT E208688 T1 20011115; AU 4027595 A 19960613; AU 695964 B2 19980827; CA 2163582 A1 19960609; CA 2163582 C 20060404; DE 69523867 D1 20011220; DE 69523867 T2 20020418; ES 2166392 T3 20020416; FI 955881 A0 19951207; FI 955881 A 19960609; FR 2727891 A1 19960614; FR 2727891 B1 19970124; JP 3713320 B2 20051109; JP H08216051 A 19960827; KR 100427450 B1 20040716; KR 960021401 A 19960718; NO 306934 B1 20000117; NO 954971 D0 19951207; NO 954971 L 19960610; US 5669281 A 19970923; ZA 9510110 B 19960606
DOCDB simple family (application)
EP 95420353 A 19951206; AT 95420353 T 19951206; AU 4027595 A 19951206; CA 2163582 A 19951123; DE 69523867 T 19951206; ES 95420353 T 19951206; FI 955881 A 19951207; FR 9415020 A 19941208; JP 32074495 A 19951208; KR 19950047681 A 19951208; NO 954971 A 19951207; US 56557795 A 19951130; ZA 9510110 A 19951128