Discharge lamp having mechanical disconnect guard against jacket failure
CA 1111482 A · Owner: General Electric Company · Inventors: Hellman, Wayne R.; Bacharowski, Walter, Jr.; Matz, Wayne C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The inner arc tube of some jacketed discharge lamps transmits ultraviolet radiation which is normally intercepted by the glass outer envelope. To prevent harmful release of such radiation in the event the outer envelope should be shattered, a mechanical disconnect is provided in the interenvelope space. The disconnect includes a springy conductor fastened to a conductive support and compressed between the outer envelope and an arc tube inlead. Upon fracture of the outer envelope the con-, ductor straightens out, whereupon the circuit is opened and the arc tube is disabled.
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 October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
- 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.