Toy helicopter
CA 1069697 A · Owner: Mattel · Inventors: Gay, Derek J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A toy helicopter having a hollow body member configured to simulate a helicopter with a main body portion and a tall section the main body, portion supporting a helicopter rotor on a shaft member extending through the roof thereof, the shaft being rotatably supported by a pair of bearings with, a reel portion configured in the shaft intermediate the bearings. The reel portion has encircled thereabout a flat constant torque coil spring acting as a spring clutch, the free end of the coil spring being secured to one end of a trigger member, which is pivotally secured within the housing. The main body portion is provided with a pair of aligned openings through which an operator can manipulate …
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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.