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:
Oct. 23, 1990
Filed:
Jan. 12, 1989
Applicant:
Inventors:
Jerome E Rau, Hoffman Estates, IL (US);
Gary E Palmer, Roselle, IL (US);
Grace D Labrador, Bolingbrook, IL (US);
Assignee:
Hako Minuteman, Inc., Addison, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
153272 ; 153276 ; 15353 ; 285-7 ;
Abstract
An adapter, mounted on the cylindrical sidewall of the vacuum cleaner tank, provides a receptacle for a rigid connector on which a flexible vacuum hose is sealingly mounted. The leading edge of the connector insert is beveled. A corresponding beveled surface is formed on the inner wall of the receptacle to engage and seal with the beveled leading edge of the connector to form a continuous, peripheral seal immediately adjacent to the wall of the tank so that when the vacuum motor is turned on, a positive force is generated to increase the effectiveness of the seal.