Pneumatically operated oscillator
CA 1064339 A · Owner: Atlas Copco Aktiebolag · Inventors: Lewkowicz, Josef; Aagren, Nils A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatically operated oscillator is used as a linear motor to operate a single or a plurality of linear positive displacement pumps having plunges. The oscillator has a single acting pneumatic piston that works against a spring to force the plunges in their pressure strokes. The spring effects the return stroke which is damped by a hydraulic circuit that has an adjustable restriction. The work stroke is undamped and fast compared with the spring actuated return stroke. Variations in the pressure of the operating air affects the work strokes, but since the work strokes are many times faster than the return strokes, variations in the air pressure have little effect on the frequency .
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 October 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 16, 1996.
- 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.