IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0709614
(2017-09-20)
|
등록번호 |
US-10259051
(2019-04-16)
|
발명자
/ 주소 |
- Novak, Joseph Thomas
- Green, Matthew Christopher
|
출원인 / 주소 |
|
대리인 / 주소 |
Eversheds Sutherland (US) LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
159 |
초록
▼
A hole cutter has a substantially cylindrical blade body defining a blade body circumference, a cutting edge formed on one end of the blade body, and an axially-elongated slot formed through the substantially cylindrical blade body. The axially-elongated slot is configured to receive chips flowing f
A hole cutter has a substantially cylindrical blade body defining a blade body circumference, a cutting edge formed on one end of the blade body, and an axially-elongated slot formed through the substantially cylindrical blade body. The axially-elongated slot is configured to receive chips flowing from the cutting edge within the interior of the blade body and (i) into the slot and/or (ii) through the slot, to prevent the collection of such chips within the interior of the blade body and/or at an interface between the blade body and the work piece. The axially-elongated slot defines a first end adjacent to the cutting edge, a second end axially spaced further from the cutting edge, and a slot area. The hole cutter further defines a total slot area to blade body circumference ratio within the range of about 0.1 to about 0.3 depending on the size of the hole cutter.
대표청구항
▼
1. A hole cutter for cutting a work piece, comprising: a substantially cylindrical blade body defining a blade body circumference;an annular cutting edge formed on one end of the blade body; anda plurality of slots formed through the blade body and together defining a slot area, each of the slots sp
1. A hole cutter for cutting a work piece, comprising: a substantially cylindrical blade body defining a blade body circumference;an annular cutting edge formed on one end of the blade body; anda plurality of slots formed through the blade body and together defining a slot area, each of the slots spaced from the cutting edge such that a portion of the blade body extends between the cutting edge and each of the slots;wherein each of the slots is configured to receive therethrough a lever for removing a work piece slug from an interior of the blade body, and the blade body defines, within the plurality of slots, a plurality of fulcrums configured for engaging the lever and for levering the slug out of the interior of the blade body by applying a sufficient levering force against the fulcrums to lever the slug towards the cutting edge, the plurality of fulcrums comprising a first fulcrum axially spaced a first distance from the cutting edge and a second fulcrum axially spaced a second distance, greater than the first distance, from the cutting edge; andwherein one of: (i) the blade body defines a diameter within the range of about ⅞ inch to about 1 7/16 inches, and a ratio of the slot area to the blade body circumference is between about 0.18 and about 0.31; (ii) the blade body defines a diameter within the range of about 1½ inches to about 3⅜ inches, and a ratio of the slot area to the blade body circumference is between about 0.10 and about 0.24; and (iii) the blade body defines a diameter of about 3½ inches or greater, and a ratio of the slot area to the blade body circumference is between about 0.11 and about 0.21. 2. The hole cutter of claim 1, wherein the blade body defines a diameter within the range of about ⅞ inch to about 1 7/16 inches, and wherein the plurality of slots comprises two slots. 3. The hole cutter of claim 1, wherein the blade body defines a diameter within the range of about 1½ inches to about 3⅜ inches, and wherein the plurality of slots comprises at least two slots. 4. The hole cutter of claim 1, wherein the blade body defines a diameter of about 3½ inches or greater, and wherein the plurality of slots comprises at least three slots. 5. The hole cutter of claim 1, wherein the plurality of slots comprises a first slot, and wherein the first slot defines a side edge oriented at an acute angle relative to a longitudinal axis of the blade body and an end edge oriented substantially parallel to the cutting edge. 6. The hole cutter of claim 1, wherein the plurality of slots comprises a first slot having a first end axially spaced a third distance from the cutting edge and a second end axially spaced a fourth distance, greater than the third distance, from the cutting edge, and wherein the first end is defined by a first curvilinear region having a first radius and a second curvilinear region having a second radius different than the first radius. 7. The hole cutter of claim 6, wherein the hole cutter defines a direction of rotation that is a cutting direction of the cutting edge, wherein the first curvilinear region leads the second curvilinear region in the direction of rotation, and wherein the first radius is less than the second radius. 8. The hole cutter of claim 1, wherein the plurality of slots comprises a first slot having a first end axially spaced a third distance from the cutting edge and a second end axially spaced a fourth distance, greater than the third distance, from the cutting edge, and wherein the first end is defined by a first curvilinear region having a first arc length and a second curvilinear region having a second arc length different than the first arc length. 9. The hole cutter of claim 8, wherein the first end is further defined by a rectilinear region oriented substantially parallel to the cutting edge, wherein the first curvilinear region is contiguous to the rectilinear region, and wherein the second curvilinear region is contiguous to the rectilinear region. 10. The hole cutter of claim 8, wherein the first slot further defines a side edge oriented at an acute angle relative to a longitudinal axis of the blade body, and wherein the side edge is contiguous to the second curvilinear region. 11. A hole cutter for cutting a work piece, comprising: a substantially cylindrical blade body defining a blade body area;an annular cutting edge formed on one end of the blade body; anda plurality of slots formed through the blade body and together defining a slot area, each of the slots spaced from the cutting edge such that a portion of the blade body extends between the cutting edge and each of the slots;wherein each of the slots is configured to receive therethrough a lever for removing a work piece slug from an interior of the blade body, and the blade body defines, within the plurality of slots, a plurality of fulcrums configured for engaging the lever and for levering the slug out of the interior of the blade body by applying a sufficient levering force against the fulcrums to lever the slug towards the cutting edge, the plurality of fulcrums comprising a first fulcrum axially spaced a first distance from the cutting edge and a second fulcrum axially spaced a second distance, greater than the first distance, from the cutting edge; andwherein one of: (i) the blade body defines a diameter within the range of about ⅞ inch to about 1 7/16 inches, and the slot area is between about 10% and about 15% of the blade body area; (ii) the blade body defines a diameter within the range of about 1½ inches to about 3⅜ inches, and the slot area is between about 6% and about 13% of the blade body area; and (iii) the blade body defines a diameter of about 3½ inches or greater, and the slot area is between about 6% and about 11% of the blade body area. 12. The hole cutter of claim 11, wherein the blade body defines a diameter within the range of about ⅞ inch to about 1 7/16 inches, and wherein the plurality of slots comprises two slots. 13. The hole cutter of claim 11, wherein the blade body defines a diameter within the range of about 1½ inches to about 3⅜ inches, and wherein the plurality of slots comprises at least two slots. 14. The hole cutter of claim 11, wherein the blade body defines a diameter of about 3½ inches or greater, and wherein the plurality of slots comprises at least three slots. 15. The hole cutter of claim 11, wherein the plurality of slots comprises a first slot, and wherein the first slot defines a side edge oriented at an acute angle relative to a longitudinal axis of the blade body and an end edge oriented substantially parallel to the cutting edge. 16. The hole cutter of claim 11, wherein the plurality of slots comprises a first slot having a first end axially spaced a third distance from the cutting edge and a second end axially spaced a fourth distance, greater than the third distance, from the cutting edge, and wherein the first end is defined by a first curvilinear region having a first radius and a second curvilinear region having a second radius different than the first radius. 17. The hole cutter of claim 16, wherein the hole cutter defines a direction of rotation that is a cutting direction of the cutting edge, wherein the first curvilinear region leads the second curvilinear region in the direction of rotation, and wherein the first radius is less than the second radius. 18. The hole cutter of claim 11, wherein the plurality of slots comprises a first slot having a first end axially spaced a third distance from the cutting edge and a second end axially spaced a fourth distance, greater than the third distance, from the cutting edge, and wherein the first end is defined by a first curvilinear region having a first arc length and a second curvilinear region having a second arc length different than the first arc length. 19. The hole cutter of claim 18, wherein the first end is further defined by a rectilinear region oriented substantially parallel to the cutting edge, wherein the first curvilinear region is contiguous to the rectilinear region, wherein the second curvilinear region is contiguous to the rectilinear region, wherein the first slot further defines a side edge oriented at an acute angle relative to a longitudinal axis of the blade body, and wherein the side edge is contiguous to the second curvilinear region. 20. The hole cutter of claim 11, wherein the plurality of slots comprises a first slot having a first end axially spaced a third distance from the cutting edge and a second end axially spaced a fourth distance, greater than the third distance, from the cutting edge, wherein the first end is defined by a first curvilinear region and a second curvilinear region, and wherein at least one of: (i) the first curvilinear region has a first radius, and the second curvilinear region has a second radius different than the first radius; and (ii) the first curvilinear region has a first arc length, and the second curvilinear region has a second arc length different than the first arc length.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.