Combination level, plumb tool with single-hand engagement
US7059059B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 21, 2003 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Apr 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A combination plumb and level tool has an elongate body with separated longitudinal arm members that have spaced apart, proximal ends fixed to the body and extend therefrom to respective separate distal free ends. The distal ends form longitudinally extending interior surfaces disposed in facing opposition located between their respective fixed and free ends. The arms and the body between them have a generally U-shaped cross section that forms an open trough from the free ends to a base contact surface between the proximal fixed ends. At least one of the arms has longitudinal extending first contact surface portion disposed on its interior surface. The first contact surface portion faces an opposing second contact surface portion of the facing arm interior surface. An elastic member cooperating with the first arm and the body biases the first arm inward, toward the second contact surface portion on the other of the arms. The arms are separated so the contact surface portions are spaced less than the width of a work piece received therein that is to be leveled or plumbed. The two arm contact surfaces and the base contact surface are disposed so that a rectangular object having an ed…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.