Vacuum cleaner nozzle
US4777696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1986 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Jul 17, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/06
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner nozzle with a retractable brush having a plate carrying strips of bristles along the forward and rearward edge thereof and having leaf springs extending from one side and cam following members extending from the opposite side. A slide having camming members in engagement with the cam following members of the brush plate. The slide and brush plate are captured in a housing into which a conduit from the vacuum source extends through the housing and out of a sole plate, which is removably secured to the top plate and against which the brush plate leaf springs bear. Projections from the slide extend through the top of the housing and move the slide laterally in one direction to bring the brush through openings along the forward and rearward edges of the sole plate against the bias of the leaf springs to extend the brush. The projections move laterally in the opposite direction to permit the springs to retract the brush. Indentations at the opposite ends of a ramp provided by the cam follower member on the brush plate latch with the camming member on the slide so as to retain the brush plate with the brushes either in extended or retracted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.