Invention Grant
- Patent Title: Milling pick
-
Application No.: US17046598Application Date: 2019-03-19
-
Publication No.: US11268382B2Publication Date: 2022-03-08
- Inventor: Heiko Friederichs , Ulrich Krämer
- Applicant: Betek GmbH & Co. KG
- Applicant Address: DE Aichhalden
- Assignee: Betek GmbH & Co. KG
- Current Assignee: Betek GmbH & Co. KG
- Current Assignee Address: DE Aichhalden
- Agency: Patterson Intellectual Property Law, PC
- Agent Lucian Wayne Beavers
- Priority: DE102018109150.8 20180417
- International Application: PCT/EP2019/056859 WO 20190319
- International Announcement: WO2019/201534 WO 20191024
- Main IPC: E21C35/197
- IPC: E21C35/197 ; E21C35/18 ; E21C35/183

Abstract:
The invention relates to a milling pick, in particular a round pick having a pick head (40), which has a pick tip (30) made of a hard material as a cutting element, wherein furthermore a pick shank (10) is provided, which is coupled directly or indirectly to the pick head (40), wherein a wear-protection disk (20) is provided, the cut-out of which, in particular a drilled hole, is pushed onto the pick shank (10),
wherein the wear-protection disk (20) has, on its side facing the pick head (40), a counterface (23), which is designed to come into contact with a bearing surface (41) of the pick head (40), wherein the wear protection disk has, facing away from the counterface (23), an underside support surface (21), which is preferably parallel to the counterface (23), and wherein a disk thickness (d) is formed between the counterface (23) and the support surface (21), is characterized in that the ratio of the diameter of the pick shank (10) located in the area of the cut-out (25) to the thickness of the disk (d) being in the range from 1.5 to 3.75, preferably in the range from 2 to 3.
wherein the wear-protection disk (20) has, on its side facing the pick head (40), a counterface (23), which is designed to come into contact with a bearing surface (41) of the pick head (40), wherein the wear protection disk has, facing away from the counterface (23), an underside support surface (21), which is preferably parallel to the counterface (23), and wherein a disk thickness (d) is formed between the counterface (23) and the support surface (21), is characterized in that the ratio of the diameter of the pick shank (10) located in the area of the cut-out (25) to the thickness of the disk (d) being in the range from 1.5 to 3.75, preferably in the range from 2 to 3.
Public/Granted literature
- US20210095564A1 MILLING PICK Public/Granted day:2021-04-01
Information query