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:
Jul. 23, 2002
Filed:
Apr. 13, 2001
David M. Dickey, Roseville, CA (US);
James J. deBlanc, Roseville, CA (US);
Carl R. Haynie, Pilot Hill, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
Fan brakes for decelerating blower impellers particularly for modular equipment enclosures are described. A module includes a blower having an impeller with a plurality of blades. The brake engages the impeller body or blades when the module is at least partially removed from the enclosure and disengages the impeller when the module is inserted into the enclosure. One brake includes an arm coupled to a braking surface. The arm applies the braking surface to the impeller when disengaged by a cam and retracts the braking surface from the impeller when engaged by the cam. A solenoid may be used in lieu of a cam for directly or indirectly applying the braking surface.