Anti-noise system for a moving object
US6210023A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Sep 15, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stage lighting device has a light source for emitting light and a light modifying element for modifying such light. The light modifying element is coupled to a driven element which is rotationally coupled to a structural member so as to be rotatable about a first axis. The device has a noise-producing motor assembly with an output shaft. A driving element is coupled to the output shaft to be rotationally driven by the output shaft about a second axis. The driving element is coupled to the driven element by an endless loop element so as to rotationally drive the driven element about the first axis. A vibration-isolating mounting structure couples a motor assembly to the structural member and includes surfaces which vibrationally isolate the motor assembly from the structural member to attenuate vibration transferred from the motor assembly to the structural member. The mounting structure is pivotally coupled to the structural member with a pivotal range of motion about a pivot axis which is substantially parallel to the first axis. A tensioner couples the structural member to the mounting structure to bias the mounting structure in a first direction about the pivot axis so as to m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.