Single-stroke pneumatic apparatus
CA 1285437 C · Owner: Zelentsov, Andrei A. · Inventors: Zelentsov, Andrei A.; Sudnishnikov, Vadim B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract A single-stroke pneumatic apparatus contains a hollow cylindrical frame, in which is mounted for reciprocating, back and forth, a striker which forms front and rear chambers in the bore of the frame. The front chamber has inlet and outlet ports of its own and so has the rear chamber. A directional flow control sleeve fitted outside the frame is arranged to uncover and overlap the inlet and outlet ports. The sleeve is provided with longitudinal internal pa sages at its forward and rearward ends and with forward and rearward radial holes.
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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.