baber/WOPTO huggingface dataset:
Patent EP-1029063-B1 (EP)
Inventor: BIET FRANCK
IPC: C12N1/21
Filed: 1998-11-02
Granted: 2009-09-09
Abstract: The invention concerns a plasmid having a replication mode which is not of the RCR type, and capable of being transferred in stable form into host lactic acid bacteria belonging at least to three different kinds.
Patent EP-0952907-B1 (EP)
Inventor: KAULE WITTICH
IPC: B29C39/14
Filed: 1998-10-20
Granted: 2003-03-12
Abstract: The invention relates to a method for producing a foil material wherein a plastic foil is provided with a lacquer layer having variable viscosity, and a relief structure is then embossed into the lacquer layer. At least during application of the lacquer layer and during the embossing process the viscosity of the lacquer layer is adjusted to a predetermined value and kept constant during the particular phase of operation. The invention fixer relates to an apparatus for carrying out this method.
Patent EP-1099459-B1 (EP)
Inventor: WIEDERRECHT JEAN-MARC
IPC: A63B71/06
Filed: 1999-11-03
Granted: 2004-12-15
Abstract: The mechanical golf counter for a watch has a first catch (30) Actuated by a pusher (P1) with a nose (33) at one end co-operating with a star wheel (17) carrying the counter for the number of swings per hole. The star wheel is controlled by a jumper (21) and a coil spring (20). A second catch (24) has a return spring (27) and is connected to a second pusher (P2). The second pusher co-operates with a second star wheel (13) carrying a second counter (6,7). The second arm of the pusher co-operates with a jumper to release the first star wheel.
Patent EP-0955623-B1 (EP)
Inventor: WU CHEN H
IPC: G08G1/095
Filed: 1999-02-26
Granted: 2006-09-27
Abstract: A light emitting diode (LED) retrofit lamp (2) with locking swivel mount (12) mounts into a threaded screw-in electrical socket of a traffic signal. The LED lamp (2) includes a socket housing (22), a printed circuit board (14) and a plurality of light emitting diodes (16). The socket housing (22) has a lower end terminating in a threaded base (18) for insertion into a threaded screw-in electrical socket. The printed circuit board (14) is fixed to a circuit housing (26) having a lower portion (29) extending through a retainer (30) and thus rotatably mounted in the socket housing (22). The plurality of light emitting diodes (16) is mounted on the printed circuit (14) in such a manner that they form a symbol image, such as an arrow, a pedestrian walking, a hand, a letter or even words. The printed circuit board (14) is rotatable relative to the socket housing (22) for rotation of the symbol image formed by the light emitting diodes (16) to a desired rotational orientation relative to the socket housing (22). Therefore, once the threaded base (18) is fully inserted into the threaded screw-in electrical socket of the traffic signal, the printed circuit board (14) can be rotated relative to the socket housing (22) so that the symbol image is properly oriented. <IMAGE>
Patent EP-0985501-B1 (EP)
Inventor: PAANI JUKKA
IPC: B27L11/00
Filed: 1999-08-30
Granted: 2006-12-06
Abstract: A method of reducing noise in a barking plant; a barking drum, a chipper and a conveyor between these. The penetration of noise through conveying openings of a partly or wholly covered conveyor (3) for receiving logs from a barking drum (1), and/or a partly or wholly covered conveyor (8') for feeding logs to a chipper (11), is reduced, and the noise level is decreased by means of the water (21) used for washing the logs. The water forms a continuous curtain (18, 19) at the front and/or back end of the conveyor (3, 8, 8') between the drum (1) and the chipper (11). <IMAGE>
Patent EP-0999252-B1 (EP)
Inventor: UENO YOSHIFUMI
IPC: H01B7/295
Filed: 1999-05-12
Granted: 2003-08-20
Abstract: L'invention concerne un adhésif ininflammable ou un film adhésif ininflammable, renfermant chacun un matériau ignifugeant sans halogène et constitué des éléments (A), (B) et (C) suivants : (A) résine de polyester, (B) matériau ignifugeant à base de composé organique azoté, et (C) composé au bore. L'adhésif et le film considérés se prêtent à la fabrication d'un câble plat et produisent un effet retardateur de flamme comparable à celui que produisent les matériaux ignifugeants halogénés, tout en conservant des propriétés satisfaisantes en matière d'isolation électrique et de liaison.
Patent EP-1080552-B1 (EP)
Title: Techniques de reduction du bruit et appareil permettant d'ameliorer la radiotelephonie sur reseaux de donnees
Inventor: KIKINIS DAN
IPC: G10L25/93
Filed: 1999-04-26
Granted: 2012-06-20
Abstract: L'invention se rapporte à un système de téléphonie (99) sur réseau de données comportant un routeur (410) relié à un réseau de données (500) pouvant assurer une fonction de téléphonie (DNT) ainsi qu'à un émetteur-récepteur sans fil (400). Ledit routeur est conçu pour faire fonctionner l'émetteur-récepteur (400) selon un protocole radio bidirectionnel, duplex, temps réel, à canaux multiples et à bande étroite. Ledit système comporte également une pluralité d'unités de communication (100, 200, 300 et 600) informatisées et portables, notamment un microphone et un appareil haut-parleur (105 et 106), conçues chacune pour communiquer avec le routeur (410) selon le protocole radio bidirectionnel, duplex, temps réel et pour traiter les appels DNT.
Patent EP-1077998-B1 (EP)
Inventor: STOREY ANTHONY EAMON
IPC: C07K14/00
Filed: 1999-05-14
Granted: 2008-01-16
Abstract: Synthetic analogues of lysine and glutamine are provided which function as substrates for the fibrin-stabilising enzyme Factor XIIIa even when labelled with a detectable moiety. The use of suitable protecting groups provides compounds which possess reduced susceptibility to in vivo metabolism especially by peptidases, and are hence useful agents for the diagnosis of thrombosis, embolism, atherosclerosis, inflammation or cancer.
Patent EP-1094881-B1 (EP)
Inventor: EIJKHOUDT ROGER
IPC: B01D53/46
Filed: 1999-07-05
Granted: 2004-05-26
Abstract: A process is provided for the removal of metal carbonyl from gaseous streams in the presence of hydrogen sulphide and/or water using a hydrophobic porous adsorbent with an accessible pore volume for pore sizes between 0.55 and 4 nm of at least 0.005 ml/g.
Patent EP-1099115-B1 (EP)
Inventor: TONNESSEN TOR INGE
IPC: G01N33/49
Filed: 1999-07-19
Granted: 2012-04-25
Abstract: A carbon dioxide sensor and a method of detecting carbon dioxide using the sensor are provided, the sensor includes a closed chamber having as a wall portion thereof a substantially watertight, carbon dioxide-permeable membrane, two electrodes disposed in the chamber, and a film of substantially electrolyte-free liquid disposed in the chamber capable of simultaneously contacting the membrane and both of the electrodes.
Patent EP-1094760-B1 (EP)
Inventor: FRANKLIN RONALD J
IPC: A61B19/00
Filed: 1999-07-02
Granted: 2006-03-29
Abstract: A customized surgical fixture ( 400 ) is formed by scanning a body to form a three-dimensional image of the body, and then identifying in the image a target ( 310 ) in the body, and mounting points or structures ( 330 ) on the body. A model, such as a computer solid model, of the fixture ( 400 ) is specified in accordance with the locations of the target ( 310 ) and mounting structures ( 330 ) or points. The fixture ( 400 ) is formed in accordance with the model of the fixture ( 400 ), for example using a rapid prototyping and tooling machine. When attached to the body, the fixture ( 400 ) can be used to guide a surgical instrument ( 610 ) into the body, for example, by using a mechanical guide ( 600 ) attached to the fixture ( 400 ) or using a remote sensing device ( 1300 ) that tracks the relative position of the customized fixture ( 400 ) and the surgical instrument.
Patent EP-1114236-B1 (EP)
Inventor: ANDERSEN FINN
IPC: E06B9/04
Filed: 1999-08-20
Granted: 2003-06-04
Abstract: A safety barrier device, particularly intended for small children, and comprising at least two fence-like sections which may be interconnected and positioned at an angle, characterized in that the sections are interconnected by hinge links comprising two cooperating toothed rims arranged so that they may be lifted out of engagement, thereby allowing the sections to be freely positioned at an angle. The structure makes it possible to produce fireguards, pens or beds.
Patent EP-1031040-B1 (EP)
Inventor: BADURA EUGEN
IPC: G01R29/24
Filed: 1999-09-10
Granted: 2004-11-24
Abstract: A device and a method for converting flow of charge into a frequency signal is proposed. The device comprises: two parallel circuit branches (Z; Z') which are arranged to receive flow of charge alternately and each of which has a series arrangement of a switching element (40; 40'), an integrator (10; 10') and a comparator (30; 30'), wherein the switching elements (40; 40') serve to supply the flow of charge to one of the two circuit branches (Z; Z') and in the receiving circuit branch (Z; Z') the integrator (10; 10') serves to integrate the flow of charge and is configured to be resettable and the comparator (30; 30') is configured to emit a signal when the integrated flow of charge corresponds to a specific threshold value signal.
Patent EP-1123093-B1 (EP)
Inventor: FEHER JANOS
IPC: A61K31/20
Filed: 1999-10-19
Granted: 2003-04-16
Abstract: A composition is disclosed which comprises as characterizing active ingredients a lipid-soluble benzoquinone, e.g. Coenzyme Q10 and at least one omega-3 polyunsaturated fatty acid selected from the group consisting of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and linoleic acid (LNA), for the prevention and/or treatment of mitochondriopathies.
Patent EP-1085896-B1 (EP)
Inventor: HORNIK VERED
IPC: C07K14/655
Filed: 1999-06-15
Granted: 2007-05-16
Abstract: Methods of use of pharmaceutical compositions and novel peptides which are conformationally constrained backbone cyclized somatostatin analogs, having somatostatin receptor subtype selectivity, are disclosed. These patterns or receptor subtype selectivity provide compounds having improved therapeutic utility. Methods for synthesizing the somatostatin analogs and for screening of the somatostatin analogs are also disclosed. Furthermore, pharmaceutical compositions comprising somatostatin analogs are disclosed.
Patent EP-1135794-B1 (EP)
Inventor: ONDRICEK DOUGLAS S
IPC: G01R31/01
Filed: 1999-12-03
Granted: 2008-04-23
Abstract: La présente invention concerne un dispositif utilisé dans la manipulation d'une ou de plusieurs puces à circuit intégré au cours d'essais après qu'elles ont été découpées dans la plaquette d'origine. Un plateau porteur porte la puce durant le transport, les essais, et/ou les applications finales. Cette puce est placée dans le plateau porteur par une ouverture et se situe sur une arête garnissant une partie de la base de l'ouverture. Les constituants ressorts de la puce se prolongent vers le bas par l'ouverture, au delà de la partie la plus basse de l'arête de façon à permettre le contact électrique. La puce peut être fixée dans l'ouverture du plateau porteur de différentes manières, notamment par le biais d'un couvercle couplé à la partie supérieure du plateau porteur ou encore par l'utilisation de fixations à encliquetage dans le plateau porteur. Un couvercle utile possède des ouvertures révélant une partie du dos de la puce. Ces ouvertures du couvercle permettent l'accès au dos de la puce. Le plateau porteur peut être monté sur une carte d'essai lors d'essais ou sur une carte de circuit imprimé lors d'une application spécifique. Dans une variante, le plateau porteur peut être d'abord positionné sur la carte, la puce et le couvercle étant ensuite montés dessus.
Patent IT-1309964-B1 (IT)
Inventor: SPATAFORA MARIO
IPC: B65G47/31
Filed: 1999-04-08
Granted: 2002-02-05
Abstract: An ordering device (1) for arranging products (2) received in the loose state in an orderly succession (3) comprises a first and a second conveyor (5, 6) with belts (7, 8) defining a product (2) feed path (P) divided into active portions (P1, P2) with variable lengths equalling complementary fractions of the total length of the path (P); a pair of transmission pulleys (9', 9''), respectively connected to the first and second conveyors (5, 6) to define the active portions (P1, P2) and supported by a carriage (33) which moves in both directions along the path (P); drive means (10) designed to move the transmission pulleys (9', 9'') so as to vary the length of the portions (P1, P2); compensator means (11; 11', 11'') for compensating the variations in'the length of the active portions (P1, P2) of the path (P) with corresponding opposite variations in the length of the respective complementary sections (12, 13, 14, 15) of the belts (7, 8); the device (1) comprises one carriage (33) and the compensator means (11) comprise mechanisms (11', 11") equipped with rigid elements (17, 18, 25, 26) which are connected to one another and which connect the carriage (33) and the belts (7, 8) and vary their geometric configuration according to the movements of the carriage (33). <IMAGE>
Patent IT-1281672-B1 (IT)
Title: Dispositivo di scarico di gas refrigerante con superficie laterale a paletta per compressore del tipo rotativo
Inventor: KIM DONG HAN
IPC: F04C18/356
Filed: 1996-01-16
Granted: 1998-02-26
Abstract: Dispositivo migliorato per lo scarico di gas refrigerante con superficie laterale a paletta per un compressore del tipo rotativo, in grado di migliorare la funzionalità di un compressore fornendo un angolo iniziale di scarico del gas refrigerante che non varia per tutti i cicli, il quale comprende un cilindro avente una scanalatura di scarico formata nella sua porzione centrale; un rullo disposto ad una porzione centrale del cilindro, inserito su un albero e girevole eccentricamente assieme all'albero; una paletta una cui estremità viene scorrevolmente in contatto con la superficie circonferenziale esterna del rullo, avente una cavità formata in corrispondenza di una sua porzione predeterminata, la paletta muovendosi verso l'alto e verso il basso; ed un cuscinetto collegato alla scanalatura di scarico e ad uno spazio nocivo superiore in cui è disposta una valvola di ritegno.
Patent IT-1305784-B1 (IT)
Title: Method for attaching an additional bottom to the external surface of the bottom of a container
Inventor: MARIN VISINO
IPC: B65D/
Filed: 1998-12-23
Granted: 2001-05-16
Abstract: The method comprises attaching the additional bottom (4) to the external surface of the bottom (3) of the container (1) by coining in a die with a male part (9) and a female (8) part which are connected to the footing and the moving slider of a press.
Patent IT-1267660-B1 (IT)
Title: Continuous speed shift device
Inventor: MIYATA HIROFUMI
IPC: B60K/
Filed: 1994-12-30
Granted: 1997-02-07
Abstract: Continuous shift device having a first, second and third rotary shaft, a differential with the first gear element connected to the third shaft, a variable-speed pulley mechanism which connects the second and the third shaft, a gear mechanism for the control power which connects the first shaft to the second or the third gear element and a gear mechanism for the power flow which connects the second shaft to the third or the second gear element. By shifting forward or backward, a clutch engages or disengages the first shaft and the gear mechanism of the control power or the second shaft and the gear mechanism for the power flow. The high control power transmitted by the first shaft to the differential goes through the gear mechanism, but the reduced flow power that returns from the differential to the first shaft goes through the pulley mechanism. When the first shaft and the gear mechanism of the control power or the second shaft and the gear mechanism for the power flow are connected by a clutch, the rotation of the third shaft is zero to produce the neutral gear. <IMAGE>
Patent IT-1276389-B1 (IT)
Title: Injection mould for shell elements with a peripheral edge bent at a angle.
Inventor: MANNI ETTORE
IPC: B29K/
Filed: 1995-06-16
Granted: 1997-10-31
Abstract: An injection mould is described, in particular for a shell element 10 having a peripheral edge 11 bent in a given direction A angled with respect to the portion 11a of the shell adjacent to the edge. The mould comprises a female mould 12 coupled with a male mould 13 and a mobile convex insert 14; the moulding cavity 20 for the element 10 in the peripheral part of the edge 11 is defined by a convex surface 24 of the insert 14, and by a concave surface 22. The concave surface 22 is composed of the female mould 12 as far as the part 11a adjacent to the edge is concerned, while the peripheral part of the edge 11 it is defined by a hollow 22b obtained in an insert 16 with reduced section mated alongside the female mould 12 in such a way that the mating is continuous; the insert 16 also has the capacity to run in the direction A with respect to the male mould 13 and to the insert 14. <IMAGE>
Patent IT-1280209-B1 (IT)
Title: Dispositivo per abbeverare volatili in gabbia
Inventor: JENNINGS NORMAN THOMAS
IPC: A01K/
Filed: 1995-08-03
Granted: 1998-01-05
Abstract: Dispositivo per abbeverare volatili in gabbia, comprendente un tubo di alimentazione (7) dell'acqua associato ad una pluralità di bocche di efflusso cadauna provvista di mezzi a nipplo (6) attivabili dai volatili (1, 2) per poter bere direttamente dalla bocca di efflusso dell'acqua, mezzi a cava (9) posti al di sotto di dette bocche di efflusso dell'acqua ed estendentesi generalmente paralleli a detto tubo di alimentazione (7) dell'acqua per raccogliere quanto colato da dette bocche di efflusso dell'acqua per obbligare i volatili (1, 2) in gabbia ad avvicinarsi alla relativa bocca di efflusso dell'acqua con il collo sostanzialmente orizzontale od inclinato verso il basso, sì che l'eventuale acqua colata tende a cadere in detti mezzi a cava (9).
Patent IT-1288154-B1 (IT)
Inventor: CONTE GINO
IPC: A63C17/00
Filed: 1996-04-18
Granted: 1998-09-11
Abstract: A frame for skates with longitudinally aligned wheels, comprising: a first substantially U-shaped support structure (1) for a plurality of wheels which is rigid with the shell of the boot, at least one second substantially U-shaped structure (8) to which at least one wheel is pivoted, said second structure (8) being pivoted to said first structure (1) in an end position thereof, said second structure (8) being at least partly housed within said first structure (1), a counteracting spring interposed between the first structure (1) and the second structure (8) and acting in the sense of maintaining them spaced apart.
Patent JP-2943984-B1 (JP)
Title: 打抜きシートの押え方法とそれに用いる押圧補助具
IPC: B31B50/25
Filed: 1998-05-01
Granted: 1999-08-30
Abstract: 【要約】
【課題】  形打抜き工程で可撓性シート材料（ダンボー ルシート）に対する局部押圧加工を施すにあたり、その 局部押圧部分に隣接する非処理部分でシート材料を傷め ることのない処理が行える打抜きシートの押え方法およ びそれに用いる押圧補助具を提供する。
【解決手段】  ダンボールシートを形打抜きする工程に おいて、その打抜き型２０における前記ダンボールシー トに対する局部押圧個所（底フラップの貼り合わせ個所 など）に、その局部押圧部分から非押圧部分への押圧力 が次第に小さく作用する押圧力の低減部を備える押圧補 助具１、１Ａを取付けて、形打抜き加工と同時に局部を 押圧して前記ダンボールシートを局部的に塑性変形させ る。また、前記方法に用いる押圧補助具１，１Ａとして は、適宜厚みのクッション性を有する部材で、所要形状 の局部の押圧主体部片２とその押圧主体部片２から非押 圧側に沿って適宜ピッチで変形容易な脚片６を多数連設 されて押圧力の低減部を構成する補助部片３とを組み合 わせてなる。
Patent JP-2958638-B1 (JP)
Title: 傾斜シュートの裏面側への磁石配置方法及び同方法に用いる磁性原料偏析装置
IPC: B03C1/22
Filed: 1998-06-02
Granted: 1999-10-06
Abstract: 【要約】
【課題】  簡単で安価に製作できる構造でありながら、 確実に傾斜シュートの表面における磁束密度を上流側か ら下流側に向けて漸次大きくすることができ、磁性原料 に偏析を確実に生じさせることができる傾斜シュートの 裏面側への磁石配置方法及び同方法に用いる磁性原料偏 析装置を提供する。
【解決手段】  傾斜シュート１３の裏面に配設した複数 の帯状磁石１９、２０、２１、２２と傾斜シュート１３ の表面間の距離Ｌ 1  、Ｌ 2  、Ｌ 3  、Ｌ 4  を下流側が上流 側より小さくなるように設定すると共に、帯状磁石１ ９、２０、２１、２２の体積を下流側が上流側より大き くなるように設定することによって、傾斜シュート１３ の表面における磁束密度を上流側から下流側に向けて漸 次大きくする。
Patent JP-2852923-B1 (JP)
Title: 流体塗布装置及び流体塗布方法
IPC: B05D1/26
Filed: 1998-06-25
Granted: 1999-02-03
Abstract: 【要約】
【目的】  スロット型の流体塗布装置（スロット式粘液 噴出塗布装置）において、塗布ヘッドと塗布対象物の干 渉を防止する。
【構成】  ２個の測定ヘッド８１ａ，８１ｂによって塗 布対象物１１の板厚及び表面の勾配を計測する。塗布ヘ ッド５５を塗布アーム５４に揺動自在に取り付け、塗布 アーム５４を昇降自在とする。塗布ヘッド５５の下降時 に塗布ヘッド５５を支持し位置決めするための２個のリ ニアアクチュエータ６１ａ，６１ｂを塗布ヘッド５５の 両側部下方に設置する。測定ヘッド８１ａ，８１ｂの出 力に応じた突出長だけリニアアアクチュエータ６１ａ， ６１ｂのストッパーロッド６５ａ，６５ｂを突出させ、 塗布ヘッド５５が塗布対象物１１の表面と平行に、かつ 適当な間隔をおいて対向するよう、ストッパーロッド６ ５ａ，６５ｂによって塗布ヘッド５５を位置決めする。
Patent MD-4543-B1 (MD)
Title: Process for cultivation of Spirulina platensis cyanobacterium
Inventor: RUDIC VALERIU
IPC: C12R1/89
Filed: 2017-02-15
Abstract: The invention refers to biotechnology, in particular to a process for cultivation of Spirulina platensis cyanobacterium.The process for cultivation of Spirulina platensis cyanobacterium provides for the cultivation on a mineral nutrient medium containing, g/L: NaNO3 - 2.25; NaHCO3 - 8.0; NaCl - 1.0; K2SO4 - 0.3; Na2HPO4 - 0.2; MgSO4·7H2O - 0.2; CaCl2 - 0.024; FeSO4 - 0.01; EDTA - 0.08; H3BO3 - 0.00286; MnCl2·4H2O - 0.00181; ZnSO4·7H2O - 0.00022; CuSO4·5H2O - 0.00008; MoO3 - 0.000015, water-soluble gold nanoparticles with a size of 5 nm in a concentration of 0.0088…0.0091 g/L and distilled water up to 1 L, at a temperature of 25…28°C, pH 8.0…10.0, with continuous illumination of 3000…4000 lx for 5 days.The result of the invention consists in increasing the production of spirulina biomass and the content of lipids in biomass in order to obtain raw material for the development and production of anticancer, immunostimulating and antioxidant agents.
Patent MD-4747-B1 (MD)
Title: Process for producing a copolymer of zinc vinyl ketophthalocyanine with N-vinylpyrrolidone
Inventor: ROBU ŞTEFAN
IPC: C09B69/10
Filed: 2020-05-06
Abstract: The invention relates to the field of chemistry, biophysics and medicine, in particular to a process for producing metallophthalocyanine photoactive polymer material from copolymers of N-vinylpyrrolidone, which can be used as an agent with phototherapeutic properties.The process for producing a copolymer of zinc vinyl ketophthalocyanine with N-vinylpyrrolidone comprises the synthesis of zinc vinyl ketophthalocyanine monomer by treating zinc phthalocyanine with acryloyl chloride at 0-5°C, production of a copolymer of zinc vinyl ketophthalocyanine with N-vinylpyrrolidone by polymerization in the presence of 2 mol% of azobisisobutyronitrile initiator at 80°C for 8 hours. The resulting copolymer contains from 10 to 30 mol% of zinc vinyl ketophthalocyanine.The technical result of the invention consists in a 3-fold increase in the content of zinc vinyl ketophthalocyanine in the composition of the copolymer, which provides an increase in phototherapeutic and photoelectric properties of the produced copolymer.
Patent NO-317096-B1 (NO)
Inventor: KARLSSON OLLE
IPC: A61P7/02
Filed: 2000-06-02
Abstract: There is provided compounds of formula I,wherein R1, R2, R3, Rx, Y, n and B have meanings given in the description which are useful as competitive inhibitors of trypsin-like proteases, such as thrombin, and in particular in the treatment of conditions where inhibition of thrombin is required (e.g. thrombosis) or as anticoagulants.
Patent NO-315551-B1 (NO)
Inventor: MUUTTONEN TIMO
IPC: E21B1/38
Filed: 2000-09-15
Abstract: During the drilling of rock by a rock drill bit, percussive impacts are applied to the drill bit by a reciprocating piston which impacts a shank that transmits the impacts to the drill bit. Secondary pistons are provided to push the shank forwardly in response to a pressure medium acting on rear surfaces of the secondary pistons. The secondary pistons push the shank to its optimum point of impact. During a drilling operation, as the piston applies percussive impacts, return pulses are reflected back to the secondary pistons. Pressure sensors detect the return pulses in the form of pressure pulses, which indicate whether the drill bit has encountered weaker or stronger materials. Based upon characteristics of the detected pressure pulses, the operation of the drilling machine, e.g., the feed and/or impact power thereof, is regulated, so that the shank is returned to its optimum point of contact.