Abstract

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.

IPC Classes  ?

• B02C 19/18 - Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating

Abstract

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.

IPC Classes  ?

• B02C 19/18 - Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating

Abstract

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).

IPC Classes  ?

• B02C 19/18 - Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
• B23H 1/06 - Electrode material
• B23H 9/00 - Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
• B21D 26/12 - Shaping without cutting otherwise than by using rigid devices or tools or yieldable or resilient pads, e.g. shaping by applying fluid pressure or magnetic forces by applying fluid pressure by shock waves initiated by spark discharge

Abstract

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).

IPC Classes  ?

• B02C 19/18 - Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating