Power steering gear with oil filled capillary bearing slots
CA 1098799 A · Owner: Sheppard, Peter H. · Inventors: Sheppard, Peter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An integral power steering gear assembly (10) includes a piston (11) and cylinder (13) combination having greater output efficiency through improved fluid balancing and cushioning of the piston at its ends. The improved cushioning utilizes oil capillary slots (50) fed with high pressure fluid from feed grooves (52,53) along the sides of the piston adjacent the output rack. In order to obtain the increased efficiency the slots, (50) are designed to have a shallow depth preferably, 0.001 inch - 0.0025 inch, which is sufficient to provide for high capillary attraction of the oil molecules to the slot (50). The trapped oil molecules prevent slip stick action, that is, molecular interaction …
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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 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 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.