Impact drill
US7073605B2 · kind B2 · utility
27Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2005 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Mar 3, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/371
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An impact drill includes a first ratchet rotating along with a spindle and movable in an axial direction, a second ratchet engaged with the first ratchet and movable in a axial direction but unrotatable, and a spring provided between the second ratchet and a partial member of a housing. An amount of movement of the spindle in the axial direction is regulated, so that the pressing force is too excessive, the restoring force of the spring urging the second ratchet is controlled to maintain a state of generating a set stroke force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.