Bellows pump for a gas-testing tube
CA 1329576 C · Owner: Fehlauer, Kai-Uwe · Inventors: Fehlauer, Kai-Uwe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bellows pump for gas-testing tubes with two grips that are spring loaded in the direction of the sample-collecting stroke and an outlet valve is to be so improved that only complete non-, manipulable suction strokes of a precisely defined volume can be effected. To this end, provision is made that within the suction channel (9) between the gas-testing tube (8) and the interior of the bellows (21) there is an inlet valve (10) that closes in the direction of the bellows interior (21) and which can be opened to initiate a complete sample-collecting stroke by operating the grips (2, 3), and which remains open during the sample-collecting stroke.
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 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- 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.