IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0912981
(2010-10-27)
|
등록번호 |
US-8449041
(2013-05-28)
|
발명자
/ 주소 |
- Monyak, Kenneth
- Mouthaan, Daniel
- Fader, Joseph
|
출원인 / 주소 |
- Sandvik Intellectual Property AB
|
대리인 / 주소 |
Morgan, Lewis & Bockius LLP
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
3 |
초록
▼
A tool pick including a head portion, a larger diameter shoulder positioned rearwardly adjacent to the head portion and joined to the head portion at a junction, and a shank extending rearwardly with respect to the shoulder. Two or more fins extend generally radially outward from the head portion an
A tool pick including a head portion, a larger diameter shoulder positioned rearwardly adjacent to the head portion and joined to the head portion at a junction, and a shank extending rearwardly with respect to the shoulder. Two or more fins extend generally radially outward from the head portion and the shoulder, each fin having an outer surface sloping outwardly and rearwardly from the head portion and a pair of side surfaces, a rear end of each fin being located rearward of the junction between the head portion and the shoulder, the fins defining a maximum diameter of at least about 105% of the diameter of the shoulder such that the outer surface of the fin at an axial position aligned with the junction is located radially outward with respect to the junction.
대표청구항
▼
1. A tool pick comprising: a head portion having a diameter;a shoulder positioned rearwardly adjacent to the head portion and being joined to the head portion at a junction, the shoulder having a diameter greater than the diameter of the head portion;a shank extending rearwardly with respect to the
1. A tool pick comprising: a head portion having a diameter;a shoulder positioned rearwardly adjacent to the head portion and being joined to the head portion at a junction, the shoulder having a diameter greater than the diameter of the head portion;a shank extending rearwardly with respect to the shoulder; andtwo or more fins extending generally radially outward from the head portion and the shoulder in a plane, each fin having an outer surface sloping outwardly and rearwardly from the head portion at an angle with respect to an axis of the tool pick and a pair of side surfaces connecting the outer surface of the fin to the head portion, each fin having a rear end located rearward of the junction between the head portion and the shoulder, and the fins defining a maximum diameter of at least about 105% of the diameter of the shoulder such that the outer surface of the fin at an axial position aligned with the junction is located radially outward with respect to the junction,wherein the slope of the outer surface of the fin changes at the rear end of the fin so that the outer surface smoothly connects to the rear end of the shoulder, andwherein the side surfaces of each fin have a width in the radial direction that varies as a function of axial position. 2. The tool pick of claim 1, wherein the fins define a maximum diameter of at least about 115% of the diameter of the shoulder. 3. The tool pick of claim 2, wherein the fins define a maximum diameter of at least about 122% of the diameter of the shoulder. 4. The tool pick of claim 1, wherein the rear end of the fins is aligned with a rear end of the shoulder. 5. The tool pick of claim 4, further comprising a puller groove positioned rearwardly adjacent to the shoulder and having a diameter less than the diameter of the shoulder, wherein a first length is defined from a front end of the head portion to the rear end of the shoulder, wherein a second length is defined from the front end of the head portion to a rear end of the puller groove, and wherein the second length is less than or equal to about 125% of the first length. 6. The tool pick of claim 1, where the two or more fins consist of five fins generally equally spaced around the circumference of the tool pick. 7. The tool pick of claim 1, wherein the diameter of the head portion is less than about 75% of the diameter of the shoulder. 8. The tool pick of claim 7, wherein the diameter of the head portion is less than or equal to about 65% of the diameter of the shoulder. 9. The tool pick of claim 1, wherein the outer surfaces of the fins slope outward from the head portion at an angle of between about 20 degrees and about 35 degrees. 10. The tool pick of claim 9, wherein the outer surfaces of the fins slope outward from the head portion at an angle of between about 23 degrees and about 30 degrees. 11. The tool pick of claim 10, wherein the outer surfaces of the fins slope outward from the head portion at an angle of about 27 degrees. 12. The tool pick of claim 1, wherein the fins each have a width between about 10% and about 20% of the diameter of the head portion. 13. A tool pick comprising: a head portion;a shoulder positioned rearwardly adjacent to the head portion, the head portion having a diameter less than about 75% of a diameter of the shoulder;a puller groove positioned rearwardly adjacent to the shoulder, the puller groove having a diameter less than the diameter of the shoulder;a shank extending rearwardly from the puller groove; andtwo or more fins extending generally radially outward from the head portion and the shoulder in a plane, each fin having an outer surface sloping outwardly and rearwardly from the head portion at an angle of between about 23 degrees and about 30 degrees with respect to an axis of the tool pick and a pair of side surfaces connecting the outer surface of the fin to the head portion, each fin terminating at a rear end of the shoulder, and the fins defining a maximum diameter of at least about 105% of the diameter of the shoulder,wherein a first length is defined from a front end of the head portion to the rear end of the shoulder, wherein a second length is defined from the front end of the head portion to a rear end of the puller groove, and wherein the second length is less than or equal to about 125% of the first length, such that the outer surface of the fin at an axial position aligned with the junction is located radially outward with respect to the junction,wherein the slope of the outer surface of the fin changes at the rear end of the fin so that the outer surface smoothly connects to the rear end of the shoulder, andwherein the side surfaces of each fin have a width in the radial direction that varies as a function of axial position. 14. A mining machine, comprising: a rotatable member; andone or more tool picks mounted on the rotatable member;wherein the tool pick includes:a head portion having a diameter;a shoulder positioned rearwardly adjacent to the head portion and being joined to the head portion at a junction, the shoulder having a diameter greater than the diameter of the head portion;a shank extending rearwardly with respect to the shoulder; andtwo or more fins extending generally radially outward from the head portion and the shoulder in a plane, each fin having an outer surface sloping outwardly and rearwardly from the head portion at an angle with respect to an axis of the tool pick and a pair of side surfaces connecting the outer surface of the fin to the head portion, each fin having a rear end located rearward of the junction between the head portion and the shoulder, and the fins defining a maximum diameter of at least about 105% of the diameter of the shoulder such that the outer surface of the fin at an axial position aligned with the junction is located radially outward with respect to the junction,wherein the slope of the outer surface of the fin changes at the rear end of the fin so that the outer surface smoothly connects to the rear end of the shoulder, andwherein the side surfaces of each fin have a width in the radial direction that varies as a function of axial position. 15. A method of manufacturing of a tool pick, the method comprising: forming a shoulder having a diameter;forming a head portion frontwardly adjacent to the shoulder, the head portion having a diameter less than about 75% of the diameter of the shoulder;forming a shank extending rearwardly with respect to the shoulder; andforming two or more fins extending generally radially outward from the head portion and the shoulder in a plane, each fin having an outer surface sloping outwardly and rearwardly from the head portion at an angle with respect to an axis of the tool pick and a pair of side surfaces connecting the outer surface of the fin to the head portion, each fin having a rear end located rearward of the junction between the head, portion and the shoulder, and the fins defining a maximum diameter of at least about 105% of the diameter of the shoulder such that the outer surface of the fin at an axial position aligned with the junction is located radially outward with respect to the junction,wherein the slope of the outer surface of the fin changes at the rear end of the fin so that the outer surface smoothly connects to the rear end of the shoulder, andwherein the side surfaces of each fin have a width in the radial direction that varies as a function of axial position.
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