Sealing rings
CA 1333182 C · Owner: Samuel Heath & Sons Plc · Inventors: Organ, Alan Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sealing ring (10) includes a plurality of circumferentially spaced axially directed projections (20) on one radial face thereof. In use the, sealing ring is located within a seating groove which is wider than the spacing between the radial faces (11,12) of the sealing ring the projections (20), holding the ring against axial movement within the groove whilst allowing the ring to swell in the axial direction inbetween the projections so as to maintain the dimensional stability of the outer face (14) of the ring. The sealing ring is particularly useful in uni-directionally operative hydraulic dampers and door closers incorporating such dampers.
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 November 22, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 22, 2011.
- 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.