Shoe having a vibratable ornament
CA 1297669 C · Owner: Chang, Koong Mou · Inventors: Chang, Shyh Tsair; Chang, Koong Mou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shoe including a mid-sole layer a lower layer, an air compression cavity an air envelope, a shoe pad, an inner and outer vamp and an ornament. The air envelope is connected to the air compression cavity via an air-transmission tube which extends from the air compression cavity, passes through the mid-sole layer is layered between the front end and outer inner of the vamp and extends through to the upper side of the vamp. The air compression cavity is set between the mid-sole layer and the shoe pad corresponding to the position of the heel portion of the shoe so that the air compression cavity is compressed and decompressed periodly as the wearer is walking. The ornament is adhered to the …
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 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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.