Rigging system locking mechanism
US9584887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2015 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Feb 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker rigging system is provided with a frame, a cam pivotally connected to the frame about a pivot axis and a sector secured to the cam with a peripheral surface with a plurality of teeth formed therein. The speaker rigging system also includes a lever arm and a pawl. The lever arm is pivotally connected to the frame with a proximal end and an intermediate portion extending between the proximal end and the pivotal connection to be oriented proximate to the sector. The pawl extends from the intermediate portion of the lever arm and is spring-biased toward the sector for engaging one of the plurality of teeth to lock the cam to the frame in a locked condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.