EP4265375A1 - Schlaggerät mit einer druckregelvorrichtung - Google Patents

Schlaggerät mit einer druckregelvorrichtung Download PDF

Info

Publication number
EP4265375A1
EP4265375A1 EP23168383.0A EP23168383A EP4265375A1 EP 4265375 A1 EP4265375 A1 EP 4265375A1 EP 23168383 A EP23168383 A EP 23168383A EP 4265375 A1 EP4265375 A1 EP 4265375A1
Authority
EP
European Patent Office
Prior art keywords
pressure regulating
adjustment
regulation
actuating member
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23168383.0A
Other languages
English (en)
French (fr)
Inventor
Eric FOUGEROUX
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montabert SAS
Original Assignee
Montabert SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montabert SAS filed Critical Montabert SAS
Publication of EP4265375A1 publication Critical patent/EP4265375A1/de
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/002—Pressure accumulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/125—Hydraulic tool components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/195—Regulation means
    • B25D2250/201—Regulation means for speed, e.g. drilling or percussion speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/365—Use of seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the present invention relates to a percussion device, and more particularly a hydraulic percussion device, provided with a pressure regulating device.
  • Such a pressure regulating device makes it possible to ensure, at each operating cycle of the percussion device, an impact of the striking piston on the tool with an impact speed, that is to say an energy of impact, predetermined.
  • the present invention aims to remedy this drawback.
  • the technical problem underlying the invention therefore consists of providing a percussion device equipped with a pressure regulating device provided with a biasing element whose preload can be easily adjusted by a user without risk of pollution of the environment of the percussion device.
  • Such a configuration of the pressure regulating device of the percussion device according to the present invention allows a user to easily adjust the preload exerted by the biasing element by rotating the adjustment member from the outside of the percussion device, that is to say without opening a hydraulic circuit and therefore without risk of pollution of the environment of the percussion device.
  • the percussion device may also have one or more of the following characteristics, taken alone or in combination.
  • connection channel is connected to the control distributor, and the control distributor is configured to connect the connection channel to the second control chamber during the return stroke of the striking piston .
  • the biasing element comprises a first end portion configured to cooperate with, and for example to bear against, the actuating member, and a second end portion configured to cooperate with, and for example to lean against, the pressure regulating drawer.
  • the actuating member is mounted sliding in the direction of movement.
  • the actuating member comprises a seat, preferably annular, against which the first end portion of the biasing element bears.
  • the biasing element is a compression spring whose first end portion bears against the actuating member and whose second end portion bears against the drawer. pressure regulation.
  • the adjustment member comprises an annular abutment surface against which the actuating member is configured to abut, the annular abutment surface being configured to limit the movement stroke of the actuating member opposite the pressure regulating slide.
  • the number of angular indexing positions is between two and eight, advantageously between four and eight, and is for example equal to six.
  • the passage opening comprises a first end opening into the regulating cylinder and a second end opening out of the percussion device.
  • the adjustment part extends at least partly into the passage opening.
  • the sealing plug comprises a sealing part provided with an external surface into which the second end of the passage opening opens.
  • the adjustment part is flush with or is set back from the external surface of the shutter part.
  • the adjustment part could project from said external surface.
  • the passage opening extends coaxially to the axis of rotation.
  • the sealing plug is fixed to the body, for example by screwing, and is configured to be immobile relative to the body.
  • the indexing mechanism comprises several indexing recesses provided on one of the closing plug and the adjustment member and distributed around the axis of rotation, and at minus one indexing projection provided on the other of the shutter plug and the adjusting member and configured to cooperate with one of the indexing recesses when the adjusting member occupies a respective angular indexing position .
  • the indexing mechanism comprises several indexing projections distributed around the axis of rotation.
  • the at least one indexing projection is formed by an indexing ball mounted in a receiving cavity which is provided on the shutter plug or the adjustment member and which is delimited internally by a portion of spherical surface.
  • the adjustment member is movable in translation relative to the shutter plug in a direction substantially parallel to the direction of movement, the biasing element being configured to maintain the member of adjustment in contact with the sealing plug.
  • the shutter plug forms a cam and the adjustment member forms a cam follower.
  • the adjustment member comprises a support part, such as a support collar, which is located axially between the adjustment part and the drive part and which is configured to rest against the sealing plug.
  • the sealing plug comprises an internal guide surface which is generally cylindrical and which is configured to guide the adjustment member in rotation and in translation.
  • the support part comprises the annular abutment surface.
  • the shutter plug comprises a fixing part which is tubular and which is fixed in the regulating cylinder, the actuating member being mounted movable, and for example mounted sliding, in the fixing part.
  • the actuating member comprises first grooves extending in the direction of movement
  • the sealing plug comprises second grooves extending in the direction of movement and configured to cooperate with the first grooves provided on the actuating member, the first and second grooves being configured to guide the actuating member in translation according to the direction of movement.
  • the second grooves are provided on an internal surface of the fixing part.
  • the sealing plug comprises a plug body and an internal insert, for example annular, which is arranged in the plug body and which is fixed relative to the plug body, the internal insert being interposed between the plug body and the adjusting member, and the indexing recesses or the at least one indexing projection being provided on the internal insert.
  • the internal insert is interposed between the plug body and the support part.
  • the driving part comprises a threaded driving rod extending substantially parallel to the direction of movement
  • the actuating member comprises a threaded axial bore configured to cooperate with the threaded drive rod
  • the pressure regulating slide, the adjustment member and the actuating member are arranged substantially coaxially.
  • the pressure regulating slide comprises an annular groove which is permanently fluidly connected to the connecting channel, the annular groove comprising an annular edge configured to at least partially define the connecting passage.
  • the pressure regulation device comprises a first regulation chamber which is delimited by the pressure regulation drawer and the regulation cylinder and which is permanently fluidically connected to the power supply circuit. high pressure fluid, and a second regulation chamber which is delimited by the pressure regulation slide and the regulation cylinder and which is permanently fluidically connected to the low pressure return circuit, the connecting passage being configured to fluidly connect the channel connecting to the second regulation chamber.
  • the biasing element and the actuating member are arranged in the second regulation chamber.
  • the second regulation chamber is antagonistic to the first regulation chamber.
  • a first face of the pressure regulation drawer is located in the first regulation chamber and a second face of the pressure regulation drawer, opposite the first face, is located in the second chamber regulation.
  • the preload adjustment device comprises adjustment marks provided on a fixed reading zone, for example provided on the body or the sealing plug, each adjustment mark corresponding to a position respective angular indexing (and therefore to a respective value of the preload applied by the biasing element on the pressure regulating slide), and a reading mark associated with the adjustment marks and provided on the adjustment part.
  • the pressure regulating device comprises a stop element, for example annular, fixed to the adjustment member, for example to the driving part, and configured to limit the travel of movement of the actuating member towards the pressure regulating slide.
  • the sealing plug comprises an annular internal groove extending around the adjustment part, and a seal disposed in the annular internal groove and configured to cooperate with the part of setting.
  • the seal may for example be provided with an annular sealing lip configured to cooperate with the adjustment part.
  • the sealing plug and the actuating member define an annular housing in which the first end portion of the biasing element is received.
  • the sealing plug comprises an annular external groove provided on the fixing part and extending around the fixing part, and an annular seal disposed in the annular external groove and configured to cooperate with the body of the percussion device.
  • the annular seal may for example be an O-ring.
  • THE figures 1 to 3 represent a percussion device 2 according to a first embodiment of the invention.
  • the percussion device 2 comprises a body 3 delimiting a piston cylinder 4, and a striking piston 5 which is stepped and which is slidably mounted alternatively inside the piston cylinder 4.
  • the striking piston 5 is configured to strike against the upper end of a tool 6 slidably mounted in a bore 7 formed in the body 3 coaxially with the piston cylinder 4.
  • the striking piston 5 and the piston cylinder 4 define a first control chamber 8 which is annular, and a second control chamber 9 which is antagonistic to the first control chamber 8 and which has a larger cross section than that of the first control chamber 8.
  • the second control chamber 9 can for example be arranged above the striking piston 5.
  • the percussion device 2 further comprises a control distributor 11 arranged to control a reciprocating movement of the striking piston 5 inside the piston cylinder 4 alternately following a striking stroke and a return stroke.
  • the control distributor 11 is configured to fluidly connect the second control chamber 9 alternately with a high pressure fluid supply circuit 12 during the striking stroke of the striking piston 5, and with a low pressure return circuit 13 during of the return stroke of the striking piston 5.
  • the first control chamber 8 is permanently connected to the high pressure fluid supply circuit 12 by a supply channel 14, so that each position of the control distributor 11 causes the striking stroke of the striking piston 5 , then the return stroke of the striking piston 5.
  • the supply channel 14 can advantageously be connected to a hydraulic accumulator 15.
  • the percussion device 2 further comprises a pressure regulating device 16 configured to regulate an operating pressure of the percussion device 2 to a predetermined value.
  • the pressure regulation device 16 comprises a regulation cylinder 17 delimited by the body 3, and a pressure regulation drawer 18 mounted movably in translation in the regulation cylinder 17 in a translation direction D.
  • the pressure regulation drawer pressure 18 is configured to occupy a plurality of regulation positions offset from each other in the direction of translation D.
  • the pressure regulating slide 18 and the regulating cylinder 17 delimit a first regulating chamber 19 which is permanently fluidly connected to the high pressure fluid supply circuit 12 via a channel 21 fluidly connected to the first control chamber 8, and a second regulation chamber 22 which is antagonistic to the first regulation chamber 19 and which is permanently fluidly connected to the low pressure return circuit 13.
  • a first face of the pressure regulation drawer 18 is located in the first regulation chamber 19 and a second face of the pressure regulation drawer 18, opposite the first face, is located in the second regulation chamber 22.
  • the pressure regulation device 16 also comprises a connecting channel 23 comprising a first end which is fluidly connected to the control distributor 11, and a second end which opens into the regulation cylinder 17.
  • the control distributor 11 is more particularly configured to connect the connecting channel 23 to the second control chamber 9 during the return stroke of the striking piston 5.
  • the pressure regulation drawer 18 and the regulation cylinder 17 are also configured to delimit a connecting passage 24 having a passage section which varies depending on the regulation position occupied by the pressure regulation drawer 18.
  • the passage of connection 24 is configured to fluidly connect the connection channel 23 to the second regulation chamber 22, and therefore to the low pressure return circuit 13.
  • the pressure regulation drawer 18 comprises, on its external surface, a groove annular 25 permanently fluidly connected to the connecting channel 23 and provided with an annular edge 25.1 configured to at least partially define the connecting passage 24.
  • the pressure regulating device 16 further comprises a biasing element 26, such as a compression spring, disposed in the second regulating chamber 22 and configured to exert a preload on the pressure regulating slide 18 and to bias the pressure regulating valve 18.
  • pressure regulation slide 18 towards a regulation position in which the passage section of the connecting passage 24 is minimal and for example zero or substantially zero.
  • the biasing element 26 exerts a force on the pressure regulating slide 18 aimed at closing the connecting passage 24.
  • the first regulation chamber 19 is supplied with high pressure fluid via channel 21 and exerts, on the pressure regulation drawer 18, a force opposite to that exerted by biasing element 26. From that this effort exceeds that of the prestress exerted by the biasing element 26, the pressure regulating slide 18 translates in the direction of the biasing element 26, which increases the passage section of the connecting passage 24.
  • the pressure regulating device 16 further comprises a preload adjustment device 27 configured to adjust the preload exerted by the biasing element 26 on the pressure regulating slide 18.
  • the preload adjustment device 27 comprises a closing plug 28 configured to close an open end of the regulating cylinder 17.
  • the closing plug 28 is fixed to the body 3, and is configured to be immobile relative to the body 3
  • the closing plug 28 comprises a fixing part 28.1 which is tubular and which is fixed, for example by screwing, in the regulating cylinder 17, and a closing part 28.2 which is configured to close the open end of the regulating cylinder 17.
  • the sealing plug 28 may for example comprise an annular external groove provided on the fixing part 28.1 and extending around the fixing part 28.1, and an annular seal 290 disposed in the annular external groove and configured to cooperate with the body 3 of the percussion device 2.
  • the annular seal 290 can for example be an O-ring.
  • the preload adjustment device 27 further comprises an actuating member 29 configured to cooperate with the biasing element 26.
  • the actuating member 29 is disposed in the second regulation chamber 22, and is movable in one direction. of movement parallel to the direction of translation D.
  • the actuating member 29 forms a pusher configured to exert a pushing force on the biasing element 26.
  • the actuating member 29 is linked to the sealing plug 28 by a slide connection.
  • the actuating member 29 is slidably mounted in the fixing part 28.1 of the shutter plug 28 and in the direction of movement.
  • the actuating member 29 comprises, on its external surface, first grooves 31 extending in the direction of movement
  • the fixing part 28.1 comprises, on its internal surface, second grooves 32 extending in the direction of movement and configured to cooperate with the first grooves 31 provided on the actuating member 29.
  • the first and second grooves 31, 32 are configured to guide the actuating member 29 in translation according to the direction of movement. shift.
  • the biasing element 26 comprises a first end portion bearing against a first annular seat 33 provided on the actuating member 29, and a second end portion bearing against a second annular seat 34 provided on the pressure regulating drawer 18.
  • the biasing element 26 exerts more particularly an axial force on the actuating member 29 and an opposite axial force on the pressure regulating slide 18.
  • the closing plug 28 and the actuating member 29 define an annular housing in which is received by the first end portion of the biasing element 26.
  • the actuating member 29 comprises a support part 29.1 which is annular and configured to support the first end portion of the biasing element 26, and an actuating part 29.2 which is annular and which extends radially from one end of the support part 29.1 which is located on the side of the shutter plug 28.
  • the actuating part 29.2 comprises the first annular seat 33 and is configured to compress the element of bias 26 when the actuating member 29 is moved towards the pressure regulating slide 18.
  • the preload adjustment device 27 also includes an adjustment member 35 linked to the shutter plug 28 by a sliding pivot connection.
  • the adjustment member 35 is mounted movable in rotation relative to the actuating member 29 around an axis of rotation A, and is also movable in translation relative to the sealing plug 28 in a direction substantially parallel to the direction of movement.
  • the pressure regulating slide 18, the adjustment member 35 and the actuating member 29 are arranged coaxially.
  • the adjustment member 35 comprises an adjustment part 36, which can for example be generally cylindrical, configured to be accessible from outside the percussion device 2 and to be rotated by a user.
  • the closing part 28.2 comprises a passage opening 37 configured to make the adjustment part 36 accessible from the outside of the percussion device 2.
  • the passage opening 37 extends coaxially with the axis of rotation A, and has a first end opening into the regulating cylinder 17 and a second end opening into an external surface of the shutter part 28.2.
  • the adjustment part 36 extends at least partly into the passage opening 37, and can for example be flush with or be located set back from the external surface of the shutter part 28.2.
  • the adjustment part 36 could project from said external surface.
  • the adjustment member 35 further comprises a drive part 38 disposed in the second regulation chamber 22, and mechanically connected to the actuator member 29.
  • the drive part 38 is advantageously linked to the member of actuation 29 by a helical connection.
  • the drive part 38 comprises a threaded drive rod 39 extending coaxially to the axis of rotation A
  • the actuating member 29 comprises a threaded axial bore 41, which can for example extend over the entire length of the actuating member 29, configured to cooperate with the threaded drive rod 39
  • the biasing element 26 is configured to maintain the adjusting member 35 in contact with the closing plug 28 via the helical connection between the actuating member 29 and the adjusting member 35.
  • the adjustment member 35 and the actuating member 29 are more particularly configured such that a rotation of the adjustment member 35 around the axis of rotation A and in a first direction of rotation results in a displacement of the actuating member 29 towards the pressure regulating slide 18 (and therefore a compression of the biasing element 26) so as to increase the preload applied by the biasing element 26 on the pressure regulating slide pressure 18, and such that rotation of the adjustment member 35 around the axis of rotation A and in a second direction of rotation, opposite to the first direction of rotation, causes a movement of the adjustment member actuation 29 at a distance from the pressure regulating slide 18 (and therefore a relaxation of the biasing element 26) so as to reduce the preload applied by the biasing element 26 on the pressure regulating slide 18.
  • the adjustment member 35 comprises a support part 42, such as a support collar, which is located axially between the adjustment part 36 and the drive part 38 and which is configured to bear against the closing plug 28.
  • the support part 42 comprises an annular abutment surface 43 against which the actuating member 29 is configured to abut.
  • the annular stop surface 43 is more particularly configured to limit the travel of the actuating member 29 opposite the pressure regulating slide 18, that is to say in the direction of the shutter plug. 28.
  • the pressure regulating device 16 can also include (according to a second embodiment of the invention shown on the figures 4 to 6 ) a stop element 44, for example annular, fixed to the adjustment member 35, for example to the driving part 38, and configured to limit the travel of the actuating member 29 in the direction of the drawer pressure regulation 18.
  • the driving part 38 comprises a threaded fixing bore 45 opening at one end of the driving part 38 which is turned towards the pressure regulating slide 18, the stop element 44 being fixed to the member of adjustment 35 by a pressure screw 46 cooperating with the tapped fixing bore 45.
  • the sealing plug 28 comprises an annular internal groove 47 extending around the adjustment part 36, and a seal 48 disposed in the annular internal groove 47 and configured to cooperate with the adjustment part 36.
  • the seal 48 can for example be provided with an annular sealing lip configured to cooperate with the adjustment part 36.
  • the pressure regulating device 16 also comprises an indexing mechanism 49 configured to define, for the adjustment member 35, a plurality of angular indexing positions in each of which the adjustment member 35 occupies, relative to the actuating member 29, a respective angular position which is stable.
  • the number of angular indexing positions can be between two and eight, advantageously between four and eight, and is for example equal to six.
  • the indexing mechanism 49 comprises several indexing recesses 51 provided on the shutter part 28.2 and distributed around the axis of rotation A, and several indexing projections 52 provided on the support part 42 and distributed around the axis of rotation A.
  • Each indexing projection 52 is configured to cooperate with an indexing recess 51 when the adjustment member 35 occupies each of the angular indexing positions.
  • the adjustment member 35 is also linked to the shutter plug 28 by a cam connection, the shutter plug 28 forming a cam and the adjustment member 35 forming a cam follower.
  • Each indexing projection 52 can come integrally with the support part 42 or be attached to the latter.
  • a user rotates the adjustment member 35 using a suitable key inserted for example in a six-sided socket. provided on the adjustment part 36, until the reading mark is positioned opposite the adjustment mark corresponding to the desired preload value.
  • a rotation of the adjustment member 35 results in a translation of the actuating member 29 relative to the closing plug 28 (in the direction of the pressure regulating drawer 18 or the closing plug 18 depending on the direction of rotation), due to the fact that the actuating member 29 is linked to the adjusting member 35 by a helical connection and is linked to the shutter plug 28 by a sliding connection.
  • Such a translation of the actuating member 29 allows the adjustment of the preload exerted by the biasing element 26 on the pressure regulating slide 18.
  • each indexing recess 51 and/or each indexing projection 52 has inclined or rounded surfaces so as to limit the torque required to overcome the resistance induced by the cam connection between the shutter plug 28 and the adjustment member 35.
  • FIG. 7 represents a percussion device 2 according to a third embodiment of the invention which differs from the embodiment shown on the figures 1 to 3 essentially in that the closing plug 28 comprises a plug body 281 and an internal insert 282, for example annular, which is fixed relative to the plug body 281 and which is interposed between the plug body 281 and the part d support 42, and in that the indexing projections 52 are provided on the internal insert 282.
  • the internal insert 282 is blocked in rotation relative to the closing plug 28 by cooperation with the second grooves 32.
  • each indexing projection 52 is formed by an indexing ball mounted in a respective receiving cavity which is provided on the adjustment member 35 and which is delimited internally by a portion of spherical surface.
  • Such a configuration of the indexing mechanism 49 minimizes friction between the adjustment member 35 and the closing plug 28, and therefore the wear of the adjusting member 35 and the closing plug 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP23168383.0A 2022-04-20 2023-04-18 Schlaggerät mit einer druckregelvorrichtung Pending EP4265375A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2203645A FR3134738A1 (fr) 2022-04-20 2022-04-20 Appareil à percussions équipé d’un dispositif de régulation de pression

Publications (1)

Publication Number Publication Date
EP4265375A1 true EP4265375A1 (de) 2023-10-25

Family

ID=82694034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23168383.0A Pending EP4265375A1 (de) 2022-04-20 2023-04-18 Schlaggerät mit einer druckregelvorrichtung

Country Status (4)

Country Link
US (1) US20230339087A1 (de)
EP (1) EP4265375A1 (de)
JP (1) JP2023159877A (de)
FR (1) FR3134738A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584968A1 (fr) * 1985-07-16 1987-01-23 Montabert Ets Procede de commande du mouvement du piston de frappe d'un appareil a percussions mu par un fluide incompressible sous pression, et appareil pour la mise en oeuvre du procede
US5979291A (en) * 1996-07-19 1999-11-09 Tamrock Oy Hydraulically operated percussion hammer
US20150027569A1 (en) * 2012-04-05 2015-01-29 Oliver Preuß Hydraulic attachment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584968A1 (fr) * 1985-07-16 1987-01-23 Montabert Ets Procede de commande du mouvement du piston de frappe d'un appareil a percussions mu par un fluide incompressible sous pression, et appareil pour la mise en oeuvre du procede
US5979291A (en) * 1996-07-19 1999-11-09 Tamrock Oy Hydraulically operated percussion hammer
US20150027569A1 (en) * 2012-04-05 2015-01-29 Oliver Preuß Hydraulic attachment

Also Published As

Publication number Publication date
FR3134738A1 (fr) 2023-10-27
JP2023159877A (ja) 2023-11-01
US20230339087A1 (en) 2023-10-26

Similar Documents

Publication Publication Date Title
EP1740810B1 (de) Einstellvorrichtung für einen motor mit veränderlichem verdichtungsverhältnis
EP0187729B1 (de) Kugelhahn
EP1048414A1 (de) Anzieh-steuervorrichtung für drehschlag-schrauber
FR2957648A1 (fr) Soupape d'inversion et moteur a combustion interne comprenant une telle soupape d'inversion
JP2008537073A (ja) 車輪ブレーキ
WO2012160287A1 (fr) Dispositif de deplacement commande en translation d'une fourchette de passage de vitesse pour boite de vitesses de vehicule automobile
EP2019894B1 (de) Einbautürschliesser
FR3104250A1 (fr) Mécanisme de réglage de résistance de détente
EP0805278A1 (de) Pneumatisch betätigte Einrichtung
EP3212362B1 (de) Schlagvorrichtung
EP4265375A1 (de) Schlaggerät mit einer druckregelvorrichtung
JP4925636B2 (ja) オートテンショナ
FR2724239A1 (fr) Dispositif de poussoir etanche, notamment pour commander une piece d'horlogerie
FR3076235A1 (fr) Dispositif de vissage-devissage pneumatique a reglage d'admission optimise
FR2643676A1 (fr) Culbuteur pour l'actionnement d'une soupape a tige d'un moteur a combustion interne
FR2817908A1 (fr) Dispositif de commande d'une soupape, et ensemble de controle de l'admission et de l'echappement comprenant un tel dispositif
FR2778712A1 (fr) Dispositif de rattrapage d'usure notamment pour un frein de vehicule
FR2584773A1 (fr) Dispositif de commande variable d'une soupape de moteur a combustion interne
JP4925634B2 (ja) オートテンショナ
WO2019158849A1 (fr) Procédé de réglage de la course de frappe d'un piston de frappe d'un appareil à percussions, et un appareil à percussions pour la mise en œuvre de ce procédé
JP4925635B2 (ja) オートテンショナ
FR3072435B1 (fr) Boitier de transmission et engin roulant equipe d'un tel boitier
FR2509381A1 (fr) Pompe a injection de carburant
JP4925643B2 (ja) オートテンショナ
FR2704900A1 (fr) Dispositif de distribution variable pour moteur à combustion interne.

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20240219

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR