Tilter apparatus for a slatted window covering
US4676292A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Apr 11, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/285
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A venetian blind tilter mechanism housing has a first surface which bears against the front wall of the headrail, and a longitudinally extending slot on the surface facing the headrail back wall forming a spring plate which fits under a downwardly turned headrail back wall edge securing the housing within the headrail. The tilter mechanism has a spur gear received onto a control axle for common rotation. The spur gear has a smooth peripheral portion extending for a substantial angular extent that lacks gear teeth with conventional gear teeth over the remainder. An elongated shaft with a worm gear extends upwardly into the housing through an opening in the headrail bottom wall for meshing engagement with the spur gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.