Ceiling cord puller propeller
US7182317B2 · kind B2 · utility
1Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Jun 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G1/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for running wire includes a housing for a biasing member attached to a piston. A locking member retains the piston in a biased position and triggers release of the piston. The piston accelerates upon release and propels a pull string attached to a projectile toward a target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.