Arrangement in angle rulers for improving fixture of an angularly adjustable blade of said rulers to the stock thereof in selected blade positions relative thereto
US4446627A · kind A · utility
Inventor
Key dates
| Filing date | Aug 20, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Aug 20, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L7/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an arrangement in angle rulers for improving the fixture of an angularly adjustable blade (10) of said rulers to the stock (11) thereof in selected angular positions relative thereto, the stock (11) comprises a rectangular hollow section having a lateral opening (17), the blade (10) being arranged to be partly surrounded by the hollow profile of the stock. A spring-loaded (20), displaceable peg (19) is arranged to extend through at least one (12) of the mutually opposing walls (12,13) of the stock, and through the blade (10). One surface of the blade exhibits grooves or promontories (27) arranged to co-act with corresponding grooves or promontories (26) in the inwardly facing surface of the wall (12), whereat both grooves (27) and promontories (26) concentrically encircle the peg (19), around which peg the blade (10) is arranged to pivot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.