Apparatus for making a train of trouser-fly units
CA 1091984 A · Owner: Textron Inc. · Inventors: Van Amburg, William F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Trouser-fly pieces are sewn to a continuous slide fastener chain and at the same time are serged along a curved edge. Variable spacing between the serged curved edge and the line or lines of stitches sewing the fly pieces to the fastener chain is made by selective puckering of each fly piece between two sewing mechanisms. The trailing end of each fly piece is lifted during the sewing to permit the positioning of the next fly piece against a stop.
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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 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.