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:
Aug. 26, 1980
Filed:
Jan. 29, 1979
Richard H Knibbs, Steventon, GB;
Dennis Wood, Wallingford, GB;
Abstract
A filter apparatus comprising a number of filter trays arranged in layers to form a stack. Each filter tray is of a glass fibre reinforced plastics material and comprises a central web having upstanding and depending parallel ribs extending between one end of the filter tray to the other end thereof so as to define a number of parallel channels. A micro filtration or ultra filtration membrane is interposed between adjacent filter trays, and alternate ends of the channels are closed so that liquid flowing along a channel in one filter tray flows through the membrane and leaves the stack through the open end of the channel in the adjacent filter tray. The filter trays are located in a plastic tube held within a demountable pressure casing having a header plate to divide the casing into two chambers each connected to a respective end of the filter trays.