Packaging machine and method
CA 2103687 C · Owner: Automated Packaging Systems, Inc. · Inventors: Lerner, Bernard; Wehrmann, Rick S.; Cronauer, William M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A jam prevention device comprises a light beam source that emits a light beam and is located on a main frame structure of a packaging machine in the machine's sealing section. During operation the light beam is reflected off tworeflective surfaces located on a moveable support operably connected to a prime mover. The reflected beam is received by a receiver located opposite the source.A clamping sub-assembly includes a seal bar and a reciprocatable seal pad housing. The housing is spring-mounted on the clamping sub-assembly and substantially surrounds the seal bar. The reflective devices are mounted on the housing. The prime mover moves the clamping sub-assembly towards a heater bar …
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
- Filed August 6, 1993 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2015.
- 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.