Door closers
CA 1315302 C · Owner: Sewell, John William · Inventors: Sewell, John William; Jeynes, Roger Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title: "Door Closers" In a door closer comprising spring means (17) within a housing (10) adapted for mounting with the thickness of the door (12) and an anchor member (30) adapted for mounting on a door frame (32) a tension member, (20) whereby the spring means draws the anchor member towards the housing to effect door closure includes at least an outer end portion in the form of a cable (21) carrying at its free end a domed abutment member (22) which is engaged behind the anchor member (30) and at a position spaced from the abutment member a collar (25) of non-round external shape whereby firstly a spacer member (40) can be interposed between the collar (25) and the housing (10) to …
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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.