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. 25, 2000
Filed:
Jun. 22, 1998
Spiros G Raftis, Pittsburgh, PA (US);
Michael J Duer, Pittsburgh, PA (US);
Chris Mitchell, Sewickley, PA (US);
A Thomas Abromaitis, Sewickley, PA (US);
Red Valve Co., Inc., Carnegie, PA (US);
Abstract
An air diffuser system contains a manifold and a plurality of elastomeric 'duckbilled' check valves. The manifold is constructed from a conduit material and can be arranged in many different configurations. The valves are made from an elastomeric material, such as rubber, preventing the valves from being clogged with sludge, sediment, or other debris commonly found in waste treatment water. Additionally, the valves can be bored with predetermined orifice sizes, allowing the volume and pressure of escaping air to be determined prior to installation. To make installation of the valves easier, various types of coupling devices may be used to attach the valves to the manifold. Examples of coupling devices include restrictive orifices, 'Y'-shaped conduits, and nipple conduits. Multiple valves can also be fabricated on a common cuff prior to installation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile