Pressure-relief valve device
CA 1099180 A · Owner: Gewerkschaft Eisenhutte Westfalia · Inventors: Weirich, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve device for pressure-relief of e.g. hydraulic, props of mine equipment has a main hollow housing into, which a guide is in screw threaded engagement for adjustment purposes. The guide has a through bore which slidably receives the cylindrical stem of a valve member. The valve meter has a domed head with a stop face held against an inner end face of the guide by means of a compression spring located in the housing and hearing on a thrust bushing guided and located on the head of the valve member. The stem of the valve member has a blind axial bore leading to frusto-conical outlets at its periphery via radial borings. The axial bore in the stem receives pressure fluid to be controlled …
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 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 1998.
- 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.