Attachment for electric hair-cutting device

An attachment configured to be detachably attached to an electric hair-cutting device comprising a blade part,

• wherein:
• the attachment comprises a comb part, and the comb part is configured to be disposed around the blade part when the attachment is attached to the electric hair-cutting device,
• the comb part comprises at least one first comb and at least one second comb,
• the at least one first comb has a first skin contact surface and a first hair raising groove, the first skin contact surface includes a first flat surface,
• the first flat surface of the first skin contact surface extends along the first skin contact surface to the first hair raising groove,
• the at least one first comb has a second skin contact surface and a second hair raising groove, the second skin contact surface includes a second flat surface,
• the second flat surface of the second skin contact surface extends along the second skin contact surface to the second hair raising groove,
• the first skin contact surface and the second skin contact surface are inclined toward a distal end of the at least one first comb in such a manner that the at least one first comb is tapered toward the distal end,
• the first hair raising groove protrudes inward at the distal end of the at least one first comb and a second concave the second hair raising groove protrudes inward at the distal end of the at least one first comb,
• the at least one second comb has a third skin contact surface, wherein the third skin contact surface consists of a third flat surface, and the third flat surface extends to a distal end of the at least one second comb,
• the at least one second comb has a fourth skin contact surface, wherein the fourth skin contact surface consists of a fourth flat surface, and the fourth flat surface extends to the distal end of the at least one second comb,
• the third skin contact surface and the fourth skin contact surface are inclined toward the distal end of the at least one second comb in such a manner that the at least one second comb is tapered toward the distal end of the at least one second comb,
• the at least one first comb includes a first imaginary continuation plane of the first flat surface, wherein the first imaginary continuation plane extends from a proximal end of the first hair raising groove to a distal end of the first hair raising groove,
• when viewed from a side view of the at least one first comb, the first flat surface extends coplanerly to the first imaginary continuation plane, and the first hair raising groove is disposed under the first imaginary continuation plane,
• the at least one first comb includes a second imaginary continuation plane of the second flat surface, wherein the second imaginary continuation plane extends from a proximal end of the second hair raising groove to a distal end of the second hair raising groove,
• when viewed from the side view of the at least one first comb, the second flat surface extends coplanerly to the second imaginary continuation plane, and the second hair raising groove is disposed under the second imaginary continuation plane, and
• when viewed from the side view of the at least one first comb, the third flat surface extends coplanerly to the first imaginary continuation plane between the proximal end of the first hair raising groove and the distal end of the first hair raising groove, and the fourth flat surface extends coplanerly to the second imaginary continuation plane between the proximal end of the second hair raising groove and the distal end of the second hair raising groove.