Abrégé

The invention relates to a grinder (1) comprising a grinding chamber, at least one first positioning element (21) made of an electrically insulating material, at least one second positioning element (22) made of an electrically insulating material and having dimensions smaller than the dimensions of the first positioning element (21), in order to form a second filtering space, and at least one pair of electrodes comprising a first electrode (10) and a second electrode (31) arranged facing one another on either side of the second filtering space.

Classes IPC  ?

• B02C 19/18 - Utilisation d'effets physiques auxiliaires aidant la désagrégation, p. ex. ultrasons, irradiation

Abrégé

The invention relates to a grinder (1) comprising a grinding chamber, at least one first positioning element (21) made of an electrically insulating material, at least one second positioning element (22) made of an electrically insulating material and having dimensions smaller than the dimensions of the first positioning element (21), in order to form a second filtering space, and at least one pair of electrodes comprising a first electrode (10) and a second electrode (31) arranged facing one another on either side of the second filtering space.

Classes IPC  ?

• B02C 19/18 - Utilisation d'effets physiques auxiliaires aidant la désagrégation, p. ex. ultrasons, irradiation

Abrégé

The invention relates to a pulsed high-power electric discharge tool (1), the tool (1) comprising a plurality of electrodes (20) mounted on an electrode holder (10), each of the electrodes (20) of the pair comprising an elongate body (210) attached to the electrode holder (10) and a firing end which is configured to allow an electric arc to be emitted or received, the body (210) being made of a first material, the electrode (20) comprising a tip (220) made of a second material, different from the first material, which is attached at the firing end of the body (210).

Classes IPC  ?

• B02C 19/18 - Utilisation d'effets physiques auxiliaires aidant la désagrégation, p. ex. ultrasons, irradiation
• B23H 1/06 - Matériaux pour électrodes
• B23H 9/00 - Usinage spécialement conçu pour le traitement d'objets métalliques particuliers ou pour obtenir des effets ou des résultats particuliers sur des objets métalliques
• B21D 26/12 - Mise en forme sans coupage, autrement qu'en utilisant des dispositifs ou outils rigides, des masses souples ou élastiques, p. ex. mise en forme en appliquant une pression de fluide ou des forces magnétiques en appliquant une pression de fluide en appliquant brusquement une pression amorcée par une décharge d'étincelles

Abrégé

The invention relates to a tool (1) for crushing rock by high power impulses, comprising at least one energy recovery module (30-1) comprising at least one capacitor (C1, C2, C3) and a secondary pair of electrodes (30-1A, 30-1B), the at least one capacitor (C1) of the first energy recovery module (30-1) being electrically connected to the second electrode (20B) of a main pair of electrodes (20A, 20B) as well as to the ground (M), the secondary pair of electrodes (30-1A, 30-1B) comprising a first electrode (30-1A), electrically connected to the midpoint (M1) located between the second electrode (20B) of the main pair of electrodes (20A, 20B) and the at least one capacitor (C1), and a second electrode (30-1B), placed facing the first electrode (30-1A) of the secondary pair of electrodes (30-1A, 30-1B) while being spaced apart by a second inter-electrode distance (D2) and electrically connected to the ground (M).

Classes IPC  ?

• B02C 19/18 - Utilisation d'effets physiques auxiliaires aidant la désagrégation, p. ex. ultrasons, irradiation