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:
Jan. 30, 2007
Filed:
Dec. 01, 2003
Applicant:
Darin Biere, Webster City, IA (US);
Inventor:
Darin Biere, Webster City, IA (US);
Assignee:
White Consolidated Limited, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47I 5/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A central vacuum assembly including a vacuum cleaning apparatus, a ventilation apparatus, a heat exchanger for transferring heat energy between air in the vacuum cleaning apparatus and air in the ventilation apparatus. Optionally, a fan for circulating air within the vacuum cleaning apparatus and/or the ventilation apparatus operates in a low speed mode for ventilation and a high speed mode for vacuuming.