Steam stop valve assembly with internal bypass valves
CA 1100120 A · Owner: Hitachi, Ltd. · Inventors: Fujita, Isao; Matsuura, Yuutaro; Kamimura, Hideyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A steam stop valve assembly with internal bypass valves for use in controlling the steam supply to a steam turbine. The steam stop valve assembly has a main valve in which formed are a plurality of bypass passages extending in the axial direction of the valve spindle. Steam inlets communicating with respective bypass steam passages are formed in the peripheral wall of the main valve. A retainer member having an inwardly directed recess is attached to the top of the main valve. Between the retainer member and the main valve, disposed is an intermediate member provided at its top surface with a projection which is loosely and slidably received by the recess of the retainer member. The …
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 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 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.