Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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US Patent 4952297 - Storage, transportation and installation container for ion-exchange membranes
US Patent Issued on August 28, 1990
Estimated Patent Expiration Date:
July 15, 2008Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
July 15, 2008Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA storage, transportation and installation apparatus for ion exchange membranes for bipolar ion-exchange membrane chlorine cells which protects the ion-exchange membrane from the environment. The apparatus includes a container which allows the wet membrane, or a series of membranes separated by plastic sheets to lay flat inside the container protected by a plastic sheet. The container has a roller tension bar across one end which allows each membrane to be pulled out of the container directly into the area between the anode and cathode of the cell for mounting into place. | InventorsApplicationNo. 220057 filed on 07/15/1988US Classes:204/255, With feeding and/or withdrawal means204/257, With feeding and/or withdrawal means204/263, With feeding and/or withdrawal means204/279, Elements204/296OrganicField of Search204/279, Elements204/255, With feeding and/or withdrawal means204/257, With feeding and/or withdrawal means204/263, With feeding and/or withdrawal means204/296, Organic242/149, Clamp206/449FOR PLATE OR SHEETExaminersPrimary: Valentine, Donald R.Attorney, Agent or FirmUS Patent References3635334, 4170535, Membrane securing deviceIssued on: 10/09/1979 Inventor: Smura4367134, Method for assembling membrane electrolytic cells Issued on: 01/04/1983 Inventor: Kircher4792386Method and apparatus for installing a large, planar, delicate membrane in an electrolysis cell Issued on: 12/20/1988 Inventor: McMichael International ClassesC25B 009/00C25B 013/02 C25B 013/08 |
