Filament support for incandescent lamp
CA 1235174 A · Owner: N.V.Philips'Gloeilampenfabrieken · Inventors: Ooms, Leo F.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
6-, ABSTRACT:, A mains voltage incandescent lamp has inside the lamp vessel (1) a frame (5-8) composed of current supply conductors (5,6) and glass beams (7,8) in which, a filament (9) comprising several parallel sections (10-13) is stretched. Two sets of supports (17 and 18) are anchored in the beams (7 and 8, respectively). The supports (17,18) each consist of a wire hook which engages the filament (9) between a respective pair of adjacent sections (11, 12 and 10, 11). The supports (18) of at least one set each have an end portion (19) extending in a direction which is transverse to the main length of the respective support and is located at a given distance from the bend (20) of the …
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 April 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
- 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.