Step link for transportation apparatus
CA 1107223 A · Owner: Westinghouse Electric Corporation · Inventors: Kraft, Joseph K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
17 48,323, ABSTRACT OF THE DISCLOSURE, A toothed step link for transportation apparatus, such as escalators, constructed of formed metallic shells. First and second like elements each including at, least one metallic shell are disposed in spaced relation. A third element including at least one hollow metallic assembly formed of assembled right- and left-hand metallic shells, which collectively define a plurality of teeth is, disposed in a portion of the space between the first and second elements. The first, second and third elements are held in assembled relation via tubular members which are press fit into aligned openings in the first second and, third elements.
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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 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.