Liquid filter cartridge for swimming pools or the like

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Description

FIG. 1 is a perspective view of a filter cartridge for swimming pools or the like showing my new design, it being understood that the opposite side is a mirror image of the side shown;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevation view of the top cover plate thereof, shown separately for convenience of illustration;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a cross-sectional view of the top cover plate thereof, taken through line 5--5 in FIG. 2, and

FIG. 6 is a cross-sectional view of the bottom cover plate thereof, taken through line 6--6 in FIG. 4.

Referenced Cited
U.S. Patent Documents
D140393 February 1945 Lindblad
586709 July 1897 Funzel, Jr.
874138 December 1907 Trett
2371895 March 1945 Kingman
2641365 June 1953 Lundeen
3647083 March 1972 Niccum et al.
3867294 February 1975 Pall et al.
3988244 October 26, 1976 Brooks
4138337 February 6, 1979 Smith
4512892 April 23, 1985 Ganzi et al.
4560477 December 24, 1985 Moldow
4663041 May 5, 1987 Miyagi et al.
4769096 September 6, 1988 Vander Giessen et al.
Foreign Patent Documents
957620 November 1974 CAX
117381 September 1984 EPX
1282685 December 1961 FRX
27019 February 1987 JPX
622 March 1918 GBX
Other references
  • Mirro Aluminum Goods Manufacturing Co., 1941 Catalogue; No. 118, p. 24, Oval Roaster, bottom left side of page.
Patent History
Patent number: D306640
Type: Grant
Filed: Nov 6, 1987
Date of Patent: Mar 13, 1990
Assignee: Pleatco Electronic & Filter Corp. (West Babylon, NY)
Inventor: Aaron D. Kott (Massapequa, NY)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Law Firm: Ostrolenk, Faber, Gerb & Soffen
Application Number: 7/118,336
Classifications
Current U.S. Class: Filter Or Strainer (2) (D23/209)