Improved micro-machined suspension plate with integral proof mass for use in a seismometer or other device
CA 2564680 C · Owner: Syms, Richard · Inventors: Standley, Ian; Pike, William Thomas; Syms, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An accelerometer or a seismometer (1) using an in-plane suspension geometry having a suspension plate (2, 201) and at least one fixed capacitive plate (3ab). The suspension plate is formed from a single piece and includes an external frame, a pair of flexural elements (6 202), and an integrated proof , mass (201) between the flexures. The flexural elements (202) allow the proof mass to move in the sensitive direction in the plane of suspension while restricting movement in all off-axis directions. Off-axis motion of the proof mass is minimized by the use of intermediate frames (204) disbursed within and between the flexural elements (202). Intermediate frames can include motion stops …
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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
- Filed May 20, 2005 and granted April 1, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.