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, 1979
Filed:
Oct. 06, 1977
William F Robandt, II, St. Joseph, MI (US);
Raymond W Spiegel, Stevensville, MI (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
An agitator for a vertical-axis automatic clothes washing machine has a plurality of circumferentially spaced apart vanes extending upwardly from a skirt adapted to overlie the bottom wall of a tub or receptacle. A corresponding plurality of lobe-like cams projects outwardly and upwardly from at or near the periphery of the skirt in the alternate spaces between the vanes. Each cam extends approximately 5 to 15.degree. upwardly from the horizontal and is geometrically defined by two edges forming a segment of the surface of a cone co-axial with the agitator. The inner edge of each cam has the radius of the circular perimeter of the agitator skirt with which the edge is co-linear; the upper edge either has a somewhat smaller radius in a crescent-shaped configuration or has an irregular, double-lobe configuration. The upper cam edges impel the clothes upwardly as the agitator oscillates to and fro, thereby promoting a successive movement of clothes downwardly, outwardly, upwardly, inwardly, and downwardly again, within the receptacle.