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US 10,850,369 B2Granted
Grinder/polisher apparatus and a grinding element therefor
OwnerTore Eklundinventor
Life of this patent
Estimating the term…
Abstract
A grinder/polisher apparatus is disclosed, the apparatus comprising first and second sets of grinding elements (2, 3) facing each other under an angle (α) thus forming between the sets of grinding elements a V-groove in which the cutting edge of a knife is insertable for movement upon grinding, wherein the grinding elements are supported in holders (5, 6). The grinding elements (2, 3) are pivotally arranged in the holders (5, 6) about axes (R, R′) the inclinations of which correspond with the opening angle (α) of the V-groove.
Claims8
A sharpening apparatus comprising a first set of grinding elements (2) and a second set of grinding elements (3),
- said first set of grinding elements (2) comprising a plurality of grinding elements (2) and said second set of grinding elements (3) comprising a plurality of grinding elements (3),
- said grinding elements (2) of said first set of grinding elements (2) and said grinding elements (3) of said second set of grinding elements (3) alternately arranged in overlapping relation to one another along an axial direction,
- said grinding elements (2) of said first set of grinding elements (2) and said grinding elements (3) of said second set of grinding elements (3) each comprising a front face (15),
- said first set of grinding elements (2) and said second set of grinding elements (3) being mounted upon a base (11),
- said front faces (15) of each of said grinding elements (2, 3) of said first (2) and second (3) sets of grinding elements each angled with respect to the base (11) to define a V-groove therebetween when viewed along the axial direction between said front faces (15) of the grinding elements (2, 3) of said first (2) and second (3) sets of grinding elements,
- said V-shaped groove having an angle (α) defined between the front faces (15) of said grinding elements (2, 3) of said first set (2) of grinding elements and said second set (3) of grinding elements, when viewed along the axial direction between said front faces (15), wherein
- the grinding elements (2) of said first set of grinding elements (2) are each individually supported in a holder (5) and said grinding elements (3) of said second set of grinding elements (3) are each individually supported in a holder (6),
- with said holders (5) in said first set of grinding elements (2) being movable in opposite directions (B) from the grinding elements (3) in said second set of grinding elements (3), and
- said holders (6) in said second set of grinding elements (3) being movable in opposite directions (B) from the grinding elements (2) in the first set of grinding elements (2),
- springs (9, 10) are arranged to bias each of the holders (5, 6) in the direction towards the opposite set of grinding elements,
- the grinding elements (2) of said first set of grinding elements (2) and said grinding elements (3) of said second set of grinding elements (3) each having a rear face (25) on a side opposite said front face (15),
- said rear faces (25) of all said grinding elements each comprising coupling means (26, 27) by which the grinding elements (2,3) of said first (2) and second (3) sets of grinding elements are each pivotally hinged to the respective holders (5, 6) about an axis (R, R′) that is substantially parallel to the respective front faces (15) of the grinding elements (2, 3) in said first (2) and second (3) sets of grinding elements.
9 more elements
A grinding element (2, 3), for a sharpening apparatus and comprising
- a holder (5, 6) supporting the grinding element (2, 3), said holder (5,6) movable in opposite directions (B), and a spring (9, 10) biasing said holder (5, 6) in one of the opposite directions (B),
- the grinding element (2, 3) having a front face (15) and a rear face (25) opposite one another, the rear face (25) comprising coupling means (26, 27) pivotally connecting to the holder (5, 6) about an axis (R, R′) that is substantially parallel to the front face (15) of the grinding element (2, 3), wherein
- said coupling means (26, 27) comprise a ridge (26) which has a partially circular sectional profile protruding away from the rear face (25) and centrally extending along the rear face (25) of the grinding element, with a center of the circle forming said partially circular sectional profile corresponding to said pivot axis (R, R′),
- the front face (15) of the grinding element (2, 3) is substantially planar,
- the grinding element (2, 3) also having two lateral sides (23, 24) connecting the front face (15) with the rear face (25), and
- the rear face (25) including two sloping surfaces situated on opposite sides of said partially circular sectional profile of said ridge (26), and with said sloping surfaces sloping away from one another at an obtuse angle (β) defined in a direction perpendicular to said pivot axis (R, R′).
3 more elements
A grinding element (2, 3), for a sharpening apparatus and comprising
- a holder (5, 6) supporting the grinding element (2, 3), said holder (5,6) movable in opposite directions (B), and a spring (9, 10) biasing said holder (5,6) in one of the opposite directions (B), wherein
- the grinding element (2, 3) has a front face (15) and an opposite rear face (25), the rear face (25) comprising coupling means (26, 27) pivotally connectable to the holder (5, 6) about an axis (R, R′) that is substantially parallel to the front face (15) of the grinding element (2, 3), and
- the grinding element is in the form of a plate member (16) having the front face (15) which is substantially planar and abrasive coated, and having a pair lateral sides of the plate member (16) extending between the front and rear faces (15, 25) being bent back from the front face (15) and inwards towards each other to form engagement lugs (18) of said coupling means (26, 27).
Dependencies are inferred from the claim text.