Safety compass
US5090127A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1991 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Mar 21, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L9/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A safety compass comprising first and second leg members. The leg members have a pivot opening and an arcuate slot formed in an upper portion thereof. The upper end portion of the leg members are pivotally attached together by a handle member having a pair of spaced apart side leaves that receive the upper end portions of the leg members therebetween. The leaves have horizontally aligned pivot openings and substantial vertical slots formed therein. A pivot pin member extends through the pivot openings formed in the leaves and the leg members. A guide pin member extends into and moves within the slots formed in the leg members and the leaves. A unique means is provided to retain a drawing implement. All of the component parts are preferably fabricated from a plastic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.