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(12) Patent: | (11) CA 1315613 |
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(21) Application Number: | 1315613 |
(54) English Title: | PROCESS FOR THE PRODUCTION OF A SPRAYED SURFACE OF DEFINED ROUGHNESS ON A WORKPIECE AND THE USE OF THE PROCESS AND THE SURFACE PRODUCED THEREBY |
(54) French Title: | PROCEDE DE VAPORISATION PERMETTANT DE DONNER LA RUGOSITE VOULUE A LA SURFACE D'UNE PIECE A USINER, APPLICATION TIREE DE CE PROCEDE ET SURFACE AINSI OBTENUE |
Status: | Expired and beyond the Period of Reversal |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | MARKS & CLERK |
(74) Associate agent: | |
(45) Issued: | 1993-04-06 |
(22) Filed Date: | 1988-04-13 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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ABSTRACT
A process for the production of a sprayed surface of defined
roughness on a workpiece is to be improved and a surface layer with a
clearly defined degree of roughness is to be provided, by a
comparatively simple procedure.
For that purpose, a powder material is sprayed on the surface,
the material comprising a mixture of a matrix on a Ni, Co and/or Fe-base
alloy, and hard materials, as well as a grain-size distribution in
respect of the hard materials with a maximum proportion between 25 and
150 µm, wherein the sprayed unsintered layer has a surface roughness in
the range of Ra 10 to 100 µm of a defined roughness of Ra.x ? 20 µm, and
x is a number of from 10 to 100 µm. The invention also embraces use of
the process for the production of the surface of transport rollers or
gripper fingers for paper or cardboard manufacture.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1315613 was not found.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
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Description | Date |
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Inactive: IPC expired | 2016-01-01 |
Inactive: IPC expired | 2016-01-01 |
Time Limit for Reversal Expired | 1998-04-06 |
Letter Sent | 1997-04-07 |
Grant by Issuance | 1993-04-06 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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CASTOLIN S.A. |
Past Owners on Record |
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REINHARD POLAK |