Labyrinth articulation joint for regenerative air heater seal frame
CA 1306269 C · Owner: The Babcock & Wilcox Company · Inventors: Gerber, David W.; Untch, Frederick M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Case 4784, ABSTRACT OF THE DISCLOSURE, A labyrinth articulation joint (38) for use in the seal frame (35) of a rotary regenerative air heater (20). An internal labyrinth arrangement of intercooperating tabs (54,55) and slots (44,45) in the two hinges (41,51) of the labyrinth articulation joint (38) present a series of successive right angle turns that increases the pressure drop through the labyrinth articulation joint (38) thus reducing the leakage of air through the labyrinth articulation joint (38), and thereby minimizing erosion of the labyrinth articulation joint (38) due to abrasive particles that would otherwise be carried through the joint by the leakage air.
Read the whole patent
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 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.