The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 1990
Filed:
Oct. 12, 1988
Applicant:
Inventor:
Klaus Woltmann, Demarest, NJ (US);
Assignee:
Willinger Brothers, Inc., Oakland, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01K / ;
U.S. Cl.
CPC ...
210169 ; 2104162 ; 210282 ; 210449 ; 119-5 ;
Abstract
An undergravel filter of an aquarium tank served by a power head to suck water from a chamber located beneath the undergravel filter to circulate this water into the tank. A riser tube connects the filter with the power head and contains a carbon cartridge, fixed to the power head. The carbon cartridge is perforated and has a substantially conical configuration. The cartridge is filled with carbon which provides chemical filtration of the water before it is returned into the aquarium tank.