Mobile tie gang apparatus
CA 1290983 C · Owner: Oellerer, Friedrich · Inventors: Oellerer, Friedrich; Hansmann, Johann; Theurer, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mobile apparatus for sequentially exchanging selected consecutive groups of old ties for groups of new ties while retaining a groups of old ties between the selected old ties for support of the mobile apparatus on the railroad track which apparatus comprises an elongated bridge-like work vehicle having two undercarriages supporting respective opposite ends of the work vehicle on the railroad track and a succession of, different individual devices mounted on the work vehicle between the undercarriages and operative to effectuate different sequential operations for exchanging the selected old ties for the new ties.
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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.