Mirror assemblies
CA 1296209 C · Owner: Waddell, Peter · Inventors: Waddell, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flexible mirror (10) comprising a reflectively coated membrane (12) overlying a circular chamber (14) has its membrane (12) tension controlled around the membrane periphery. The membrane periphery is secured by circularly-extending clamp surfaces formed between two rings (21,24) which are axially movably mounted by three bolts (22) and associated springs (23) which provide for coarse tension control when the membrane (12) is pulled down against the circular aperture (13) of structure (15). Fine tension control is provided by one ring (24) containing a segmented inner ring (32) the segments of which are independently operated by bolts (33) causing the segments to abut an O-ring (30) …
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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 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.