Hand seamer
CA 1234964 A · Owner: Butler Manufacturing Company · Inventors: Mcclure, Richard R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hand seaming tool for use during original installation or re-roofing of roof panels of a building. A pair of main body elements a pair of interconnected, intermediate body elements handle structure, limit, structure, and an anvil head and forming bar all cooperate to permit an operator and user of the device to perform double seaming of the edge flanges of adjacent roof panels. Preferably such operation occurs during initial starting of the double seaming and/or the final completion of such double seaming operation. A motorized roof seamer is normally used for the intermediate portion between the beginning and ending double seamed areas.
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.