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:
Jun. 01, 1976
Filed:
Mar. 12, 1975
Karl G Otzen, Brookfield, WI (US);
Safety-Kleen Corporation, Elgin, IL (US);
Abstract
A disposable filter unit for use with a parts washer or the like. The filter consists of a body in the general form of a bag, made from a softenable but substantially solvent-impermeable thermoplastic material having a neck portion attached to a mounting collar. The mounting collar is a stiff but resilient element suitable for being positioned and retained within the drain opening of the parts washer, being constantly held in place by a cup or screen. The filter body has large by-pass openings in the neck, smaller openings in the upper body portion and still smaller openings in the lowermost portion. The filter acts by trapping sharp-edged or jagged particles such as slivers and filings, both on the interior surface of the bag and within the openings. Entrapment of the filtered material effectively creates a finer mesh filter, and the graduated opening sizes provide a combination filtration and settling action.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile