Tool bit assembly
US11746652B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2022 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Apr 6, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/188
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tool bit assembly includes a shank having an elongated shaft, an intermediate portion extending from the shaft, a head extending from the intermediate portion, and a tool portion extending from the head. The assembly includes a retainer with a body defining a hollow shaft configured to receive at least a portion of the elongated shaft of the shank therethrough, and a washer defining an opening extending from a first end to a second end of the washer, and the washer having at least a first step and a second step. The opening of the washer is configured to receive at least a portion of the intermediate portion of the shank therethrough. The first step is configured to abut a bottom surface of the head of the shank, and the second step is configured to abut a first shoulder of the intermediate portion of the shank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.