Elevator cab
CA 1251148 A · Owner: Westinghouse Electric Corporation · Inventors: Sherwood, Edward F.; Orndorff, Karl B.; Baldwin, Paul L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lightweight elevator cab constructed essentially of aluminum, including upstanding side rear and front wall, portions. Perimetrically flanged rectangularly shaped, aluminum wall panel members have their adjacent flanged edges joined together to form a side wall portion and in, most cases the rear wall portion as well. The rear wall may also be constructed essentially of glass panels if, desired. The lower flanges of the aluminum wall panels are attached to a support platform, and the upper flanges support a canopy formed of aluminum honeycomb sandwiched between two flat aluminum sheet members. The cab front includes a stationary aluminum portion which forms a wiring duct, and an aluminum …
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 March 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 14, 2006.
- 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.