Rotary atomizing head of a rotary atomizing electrostatic coating apparatus
CA 2197799 C · Owner: Ishiguro, Yasuo · Inventors: Ohnishi, Yoshiaki; Ishiguro, Yasuo; Sakakibara, Masahito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bell head for a rotary atomizing electrostatic coating apparatus includes a bell head body made from highly electrically resistant material, a semi-conductive layer formed on an outer surface of the bell head body and a highly, electrically resistant layer formed on an outer surface of the semi-conductive layer. The highly electrically resistant layer is also of a chemical-resistant and thinner-resistant type. The advantage is a bell head which efficiently charges paint with an electrostatic charge to ensure painting efficiency, while effectively inhibiting sparking to ensure safety.
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
- Filed February 17, 1997 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2019.
- 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.