Hydraulic hammer having variable stroke control
US9840000B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jan 25, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D9/18
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A variable stroke control system for a hydraulic hammer is disclosed. The variable stroke control system may include an inlet groove formed around a piston associated with the hydraulic hammer and configured to receive pressurized fluid, and an outlet groove formed around the piston associated with the hydraulic hammer and configured to discharge the pressurized fluid. The variable stroke control system may further include a valve in fluid communication with the inlet groove and the outlet groove, and configured to selectively adjust a stroke length of the piston based on a change in pressure differential between the inlet groove and the outlet groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.