The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2007
Filed:
Apr. 22, 2004
Dino Chirumbolo, Settimo Torinese, IT;
Dino Chirumbolo, Settimo Torinese, IT;
ITW Industrial Components S.R.L., Milan, IT;
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.