Method and apparatus for producing shirring
CA 1237339 A · Owner: Casket Shells, Inc. · Inventors: Bonczar, Lawrence; Ceresko, Helen; Semon, Joseph R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A panel of fabric is guided from a spool to a gathering device. The gathering device includes a spindle located above and across the width of the panel of fabric and having a plurality of spaced apart wheels attached thereto. Extending radially from the wheels are a plurality of flexible mechanical fingers, or alternately, flexible bristles. As the wheels rotate the flexible projections gather the fabric into folds. A panel of backing material is guided to underlay the gathered fabric. The gathered fabric is then adhered to the backing material. A means for conveying the fabric and backing material is also provided.
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 May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.