Hand operated impact tool
US5542479A · kind A · utility
Inventors
Key dates
| Filing date | Jun 22, 1994 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Jun 22, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D1/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A grounding rod or other article is manually driven into the ground by an impact tool including an elongated guide shaft or rod having a center axis and upper and lower end portions. The lower end portion of the rod is secured by a cross pin to a coupler including a cylindrical body of electrical insulating material. The body defines a cavity extending downwardly from a metal anvil pad embedded within the body, and the cavity is formed by angularly related wedge surfaces extending from a slot. The slot opposes a threaded fastener extending radially through a flanged nut also embedded within the body. A cylindrical metal weight or hammer is slidable on the guide rod for impacting the coupler, and the hammer carries a pair of freely rotatable knobs disposed circumferentially at an angle less than 180.degree.. A ring is secured to the upper end portion of the guide rod by a cross pin for retaining the hammer, and a circular bubble level is recessed within the top of the hammer for indicating when the impact tool is vertical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.