Vortex blower

- Hitachi, Ltd.
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Description

FIG. 1 is a front, top and right side perspective view of a vortex blower showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3511578 May 1970 Horst
Other references
  • American Fan Co. Catalog, p. 3, Blowers A and B, top left and right side of page, p. 5, Blower C, lower left side of page. Blower C, lower left side of page. New York Blower Co. catalog, Blower I, lower middle of page.
Patent History
Patent number: D327316
Type: Grant
Filed: Apr 19, 1991
Date of Patent: Jun 23, 1992
Assignee: Hitachi, Ltd. (Tokyo)
Inventors: Toshiharu Yoshidomi (Funabashi), Takeshi Abe (Tokyo), Eiichi Ito (Narashino), Masayuki Fujio (Sakura), Kazuo Kobayashi (Chiba), Kengo Hasegawa (Sakura), Yukio Chihara (Chiba)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Law Firm: Antonelli, Terry, Stout & Kraus
Application Number: 7/687,535
Classifications
Current U.S. Class: Blower (D23/383)