Randomly dumpable self orienting spiral packing elements
CA 1107635 A · Owner: Norton Company · Inventors: Foote, Earl H.; Moore, Frank D.; Strigle, Ralph F. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Precision molded plastic cellular packing elements (10 and 40) of polygonal and curvilinear spiral shape are provided for mass transfer and effluent treatment-apparatus. Each spiral element (10 and 40 has more than one convolution (16 and 46), a maximum transverse width (W) significantly greater than its axial height (H) whereby it has a greater tendency to orient itself horizontally and its relatively shorter wall surfaces substantially vertical, angularly spaced ribs (24 - 26) (52 - 54) which extend from the axis (x) and interconnect the convolutions; and wherein adjacent wall portions of the ribs and of the spiral convolutions around open end cells of the element are either in alignment …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.