Torch
CA 1282758 C · Owner: Drane, John H. · Inventors: Drane, John H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand torch has a bulb holder 8 of molded plastics material designed, to protect the bulb 19 from damage due to movement of the batteries 14 if the torch is dropped. The bulb holder has an outer wall 9 inner wall 10, forward flange 11 within which is a bulb-holding recess and radial ribs, 12 against which the forward rim 13 of the battery abuts when the battery contact pip 17 touches the bulb center contact spring 16. The ribs 12 are abutments preventing the battery from moving towards the bulb if the torch is dropped. The lens 4 is made of Oroglas? DR toughened acrylic material.
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 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2008.
- 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.