Patent Yard Sign in
Expired Canadian patentCanada

Hydraulic safety brake valve arrangement

CA 1332692 C · Owner: Danfoss Fluid Power A/S · Inventors: Thomsen, Svend Erik

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A hydraulic safety brake valve arrangement for a motor (1) that is loadable by an external force (F) comprises a main valve (115). It forms a first throttling point (118) in the supply motor conduit (5b) and a second throttling point (119) in the delivery motor conduit (6b). The openings of both throttling points (118, 119) change in the same sense. At least during braking operation, they depend on the flow (C) through the first throttling point (118). The second throttling point (119) is in series with a compensating valve (116) which holds the pressure drop at the second throttling point (119) constant. Further the connection (24) of the second throttling point (119) on the container side …

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 25, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 25, 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.
FiledDecember 13, 1988
GrantedOctober 25, 1994
Term endedOctober 25, 2011
Patent numberCA 1332692 C
Classification (IPC)F15B13/01

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 13, 1988Patent grantedOct 25, 1994Term endedOct 25, 2011

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.