Extendable linkage, extendable handle, and drywall tool with extendable handle
US8272105B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jan 28, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/1652
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An extendable linkage mechanism for operating a slave actuator over a range of distances from a master actuator, an extendable handle for operating a tool over a range of handle length; and a tool for use by an operator for dispensing drywall joint compound into joints between sheets of drywall. Slanted engagement surfaces on master and slave wedges engage each other as well as master and slave rods to transmit motion and force at varying distances, for instance, from a lever at one end to a clamp at the other end. The elongated slave rod passes through orifices in the wedges. Structural or tubular members may slidably engage to provide extendibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.