Air precleaner

Description

FIG. 1 is a perspective view of an air precleaner showing my new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a side view thereof; and,

FIG. 4 is a bototm view thereof.

Referenced Cited
U.S. Patent Documents
2417130 April 1947 Russell
3740932 June 1973 Bersheim
3973937 August 10, 1976 Petersen
4013137 March 22, 1977 Petersen
4135897 January 23, 1979 Gondek
4197102 April 8, 1980 Decker
4547207 October 15, 1985 Petersen
5022903 June 11, 1991 Decker
Other references
  • Advertising for Best-Ex Centri Air Pre-Cleaners, by Best-Ex, Inc. before 1990. Advertisement, Price List and Specifications for Turbo.RTM. Pre-Cleaners by Sureco, Mar. 1, 1987. Exhibit 1: Photographs and photocopy of air precleaner on the market in the United States more than one year before filing date of the present application.
Patent History
Patent number: D422069
Type: Grant
Filed: Jul 22, 1998
Date of Patent: Mar 28, 2000
Assignee: American Farm Implement & Specialty, Inc. (Janesville, WI)
Inventor: William K. Decker (Cambridge, WI)
Primary Examiner: Lisa Lichtenstein
Law Firm: Foley & Lardner
Application Number: 0/91,054
Classifications
Current U.S. Class: Air Cleaner (D23/364)
International Classification: 2304;