Frame for dust filter bags

- Flakt Aktiebolag
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Description

FIG. 1 is a top plan view of frame for dust filter bags showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a perspective view thereof;

FIG. 4 is a front elevational view thereof, the rear view being identical; and

FIG. 5 is a side elevational view thereof, the opposite side being identical.

Referenced Cited
U.S. Patent Documents
D87162 June 1932 Malik
D120487 May 1940 Levine
1037265 September 1912 Kirkpatrick
1109372 September 1914 Thurman
2140995 December 1938 Groom et al.
2627824 February 1953 Schulze
2673053 March 1954 Kilian
3815333 June 1974 Rhodes
3826066 July 1974 Higgins
3997305 December 14, 1976 Ulvestad et al.
4141704 February 27, 1979 Berglund
4281813 August 4, 1981 Garrity
4435197 March 6, 1984 Nijhawan
4488697 December 18, 1984 Garvey
Patent History
Patent number: D289813
Type: Grant
Filed: Dec 11, 1984
Date of Patent: May 12, 1987
Assignee: Flakt Aktiebolag (Nacka)
Inventors: Staffan Jansson (Vaxjo), Jan Sandberg (Vaxjo), Hakan Arvidson (Vackelsang), Svante Berglund (Hovmantorp)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Ruth E. Takemoto
Law Firm: Dann, Dorfman, Herrell and Skillman
Application Number: 6/680,412
Classifications
Current U.S. Class: Refuse Collection Receptacle (D32/30)