High impact device and method
US4747455A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1985 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | Jul 15, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/221
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A high impact device, as for producing an impact of 1,000 foot pounds or more, includes a ram which is engageable by a pair of rotating flywheels. The ram may impact a tool, as of a chisel type adapted for demolition purposes, or having a enlarged head for percussion purposes, or other types or purposes. By terminating the engagement of the flywheels with the ram prior to its impact against a tool or similar object, the vibration normally associated with a demolition or percussion device is avoided. Such termination of engagement also reduces reverse shocks and conserves the energy of the rotating flywheels. In one embodiment, the flywheels are moved inwardly and outwardly of the ram through a linkage connected to a solenoid, with each flywheel supported between a pair of arms and alignment of the axis of each flywheel with the side of the corresponding ram being maintained by a torque tube extending between the arms. A guide for the ram extends into a tool housing, and the ram has an enlargement to engage a hole in an upper plate to limit upward movement and on downward movement to engage a metal ring placed above a pair of resilient rings, for resilieintly terminating downward mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.