Vacuum pad
CA 1074829 A · Owner: American Chain And Cable Company · Inventors: Barker, Loren B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum pad comprising a body having a bore extending therethrough. One end of the bore is adapted to be attached to a source of vacuum. A water trap chamber is provided on the body communicating with the bore. A cup of flexible material having a peripheral lip is mounted on the water trap chamber and has an opening therethrough providing communication between the interior of the water trap chamber and the space surrounded by the peripheral lip. - 2 -
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 April 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 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.