Device at a spring brake actuator
CA 1301082 C · Owner: Emilsson, Fred Soren · Inventors: Ljung, Krister Egil; Emilsson, Fred Soren; Severinsson, Lars Mattis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
11, Abstract of the Disclosure, A device for discontinuing and automatically restoring the operational function of a spring brake actuator comprises a piston (9) with a piston rod (10) and a spring (13) actuating the piston and piston rod in a working direction for brake application at falling brake fluid pressure on the piston aslitted, resilient locking ring (15) being arranged in grooves (16 17) facing, each other In the piston rod and a piston rod sleeve (14) coaxial therewith. The locking ring can either be constrained to rest in both of the grooves so, that the piston rod and piston rod sleeve are locked together or be free to be, forced completely into one of the grooves which is at …
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.