Vacuum pump

- Alfa Laval Agri, Inc.
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Description

FIG. 1 is a perspective view of a vacuum pump, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D352041 November 1, 1994 Hanson
D357687 April 25, 1995 Jensen
D364172 November 14, 1995 Jensen et al.
4631006 December 23, 1986 Murry
Other references
  • Exhibit 1: Brochure pages (2) showing Alfa Laval Agri, Inc. rotary vane vacuum suppliers, publication date unknown but prior to 1997. Exhibit 2: Brochure page showing Alfa Laval Agri, Inc. LVP vacuum supplier system, publication date unknown but prior to 1997. Exhibit 3: Brochure page showing Alfa Laval Agri, Inc. water ring suppliers, publication date unknown but prior to 1997. Exhibit 4: Brochure page showing Waikato Vacuum Pumps, publication date unknown but prior to 1997. Exhibit 5: Brochure page showing Strangko Vacuum Pump Assemblies, publication date unknown but prior to 1997. Exhibit 6: Brochure page showing Elmira Machine Industries, Inc. Vacuum Pump Assembly, publication date unknown, but prior to 1997. Exhibit 7: Brochure page showing Schlueter Vacuum Pump Assembly, publication date unknown but prior to 1997. Exhibit 8: Brochure page showing Universal Dairy Equipment, Inc. Vacuum Pump Assembly, dated Jun. 1989. Exhibit 9: Brochure page showing Westfalia Vacuum Pump Systems, publication date unknown but prior to 1997.
Patent History
Patent number: D391270
Type: Grant
Filed: Jan 14, 1997
Date of Patent: Feb 24, 1998
Assignee: Alfa Laval Agri, Inc. (Kansas City, MO)
Inventor: Mofazzal H. Chowdhury (Sun Prairie, WI)
Primary Examiner: Ralf Seifert
Law Firm: Foley & Lardner
Application Number: 0/64,923
Classifications
Current U.S. Class: Pump Or Compressor (D15/7)
International Classification: 1502;