Self regulating temperature heater as an integral part of a printed circuit board
CA 1294375 C · Owner: Mckee, Michael John · Inventors: Mckee, Michael John; Henschen, Homer Ernst; Pawlikowski, Joseph Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heater is secured to or embedded in a circuit board and is selectively energizable by current to melt solder in a connection or disconnection operation. The heater is spaced from circuit board contact pads by circuit board structure material that transmits the generated thermal energy to the contact pads to melt solder or other fusible material. The heater is preferably a self-regulating heater in the form of a copper substrate having a thin surface layer of magnetically permeable high resistance, material. An alternating current of constant amplitude and high frequency is passed through the heater and concentrated in the surface layer at temperatures below the surface layer Curie …
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 January 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 14, 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.