Vise and punch tool
US3939563A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1975 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Feb 3, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F9/685
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pliers-type tool for locking around a work piece such as a post and slidably mounting a punch which when struck by a hammer will pierce the work piece. The tool is especially adapted for embracing and gripping a highway delineator or sign post to prevent distortion thereof after the post is driven into the ground so that a hole is easily punched in the post adjacent ground level and facing traffic for forming a weakened fracture zone whereby the post will break at ground level without leaving an upstanding segment when impacted by a vehicle and is then fit for reuse by driving the broken end into the ground and then using the tool to punch a hole in the post at the new ground level thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.