Control knob of the retractable type with slowed-down extraction, in particular for an electrical household appliance
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 6, 2007
Grant Date -
Feb 24, 2005
app pub date -
Apr 22, 2004
filing date -
Apr 23, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A knob includes a hub to be fixed in a seat open at the front of an electrical household appliance, a grip, which can slide axially, against the action of an elastic element, on a first end of the hub. Between the grip and the hub there is defined a closed chamber having a variable volume that is a function of the axial position of the grip on the hub. A sliding seal is provided for sealing the closed chamber. A calibrated restriction connects the inside of the chamber with the external environment in such a way as to bring about a negative pressure in the chamber as a result of the axial movement of the grip away from the hub.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully