Microprocessor controlled winder
CA 1109675 A · Owner: Owens-Corning Fiberglas Corporation · Inventors: Beckman, John T.; Lonberger, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved microcomputer controlled winder for attenuating a plurality of streams of molten glass issuing from a bushing into fibers and for collecting a strand of such attenuated fibers into a package. The microcomputer controls the winder speed in accordance with error between programmed data and a winder collet speed signal from a tachometer. The tachometer signal is modified to compensate for temperature variations in the bushing when a package is started after the bushing has been shut down for a period of time.
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 September 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.