US3850669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal spraying process
Assignee: Mazda Motor Corp
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Filing: 1972-09-25
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Granted: 1974-11-26
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Expires: 1992-09-25
Abstract
Abstract A process of spraying molten metal on to an object, which is formed with a plurality of mechanical parts to be metal-coated, to form a metallic coating interlocked with the surface of the object. To facilitate the metal spraying process, the mechanical parts to be metal-coated are formed into the single object with a partition plate utilized to insulate individual mechanical parts from each other, the resultant metallic coating covering the entire peripheral surfaces of these parts and plates. A line of weakness along which brittle facture occurs is provided in the metallic coating substantially between the ends of each of the mechanical parts and the adjacent partition plate whereby separation of the object into these individual mechanical parts can be easily carried out by giving an impact to the metallic coating or the partition plate.
Inventors
- 👤 H Mino
- 👤 S Miyanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:45
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/32; C; C23; C23C; C23C4/00; C23C4/01; B05D1/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
A METAL SPRAYING PROCESS WHICH COMPRISES THE STEPS OF: MOUNTING A PLURALITY OF MECHANICAL PARTS IN A ROW SIDE BY SIDE ON A SUPPORTING STRUCTURE; PLACING A PARTITION PLATE BETWEEN EACH TWO ADJACENT MEMBERS OF AND AT EACH OF THE ROW OF SAID MECHANICAL PARTS, WITH THE PERIPHERAL PORTION OF SAID PARTITION PLATE EXTENDING RADICALLY OUTWARDLY FROM THE PERICPHERAL SURFACE OF EACH SAID MECHANICAL PARTS, SAID PARTITION PLATE BEING MADE OF METALLIC MATERIAL OF SIMILAR BONDABLE QUANTITY AS SAID MECHANICAL PARTS AND HAVING A PERIPHERAL EDGE ON BOTH SIDES OF SAID PARTITION PLATE, AT LEAST ONE OF SAID PERIPHERAL EDGES BEING A BEVEL SURFACE WHICH IS SUBSTANTIALLY OBLIQUELY OUTWARDLY INCLINED RELATIVE TO THE PERIPHERAL SURFACE OF THE ADJACENT MECHANICAL PART; SPRAYING A MOLTEN METAL WHICH IS CAPABLE OF BEING SPRAYED AND WHICH WILL BOND TO THE METALLIC MATERIAL OF SAID MECHANICAL PARTS AND SAID PARTITION PLATES ON THE ENTIRE PERIPHERAL SURFACES OF SAID MECHANICAL PARTS AND SAID PARTITION PLATES BY EFFECTING RELATIVE MOVEMENT BETWEEN SAID MECHANICAL PARTS AND PARTITION PLATES AND A SPRAYING
Claim 2
Dependent Claim
173 words
A METAL SPRAYING PROCESS WHICH COMPRISES THE STEPS OF: MOUNTING A PLURALITY OF MECHANICAL PARTS IN A ROW SIDE BY SIDE ON A SUPPORTING STRUCTURE; PLACING A PARTITION PLATE BETWEEN EACH TWO ADJACENT MEMBERS OF AND AT EACH OF THE ROW OF SAID MECHANICAL PARTS, WITH THE PERIPHERAL PORTION OF SAID PARTITION PLATE EXTENDING RADICALLY OUTWARDLY FROM THE PERICPHERAL SURFACE OF EACH SAID MECHANICAL PARTS, SAID PARTITION PLATE BEING MADE OF METALLIC MATERIAL OF SIMILAR BONDABLE QUANTITY AS SAID MECHANICAL PARTS AND HAVING A PERIPHERAL EDGE ON BOTH SIDES OF SAID PARTITION PLATE, AT LEAST ONE OF SAID PERIPHERAL EDGES BEING A BEVEL SURFACE WHICH IS SUBSTANTIALLY OBLIQUELY OUTWARDLY INCLINED RELATIVE TO THE PERIPHERAL SURFACE OF THE ADJACENT MECHANICAL PART; SPRAYING A MOLTEN METAL WHICH IS CAPABLE OF BEING SPRAYED AND WHICH WILL BOND TO THE METALLIC MATERIAL OF SAID MECHANICAL PARTS AND SAID PARTITION PLATES ON THE ENTIRE PERIPHERAL SURFACES OF SAID MECHANICAL PARTS AND SAID PARTITION PLATES BY EFFECTING RELATIVE MOVEMENT BETWEEN SAID MECHANICAL PARTS AND PARTITION PLATES AND A SPRAYING
Claim 3
Dependent Claim
48 words
A metal spraying process as claimed in claim 1 in which said bevel surface has a radially inner portion and a radially outer portion, the radially inner portion being inclined relative to the peripheral surface of the adjacent mechanical part at an angle of from 90* to 170*.
Claim 4
Dependent Claim
62 words
A metal spraying process as claimed in claim 2 in which said radially outer portion is obliquely inclined relative to said peripheral surface at an angle greater than the angle at which said radially inner portion is inclined, and at an angle less than an angle at which said radially outer portion is flush with the peripheral surface of the partition plate.
Claim 5
Dependent Claim
25 words
A metal spraying process as claimed in claim 3 in which said radially outer portion is flush with the peripheral surface of the partition plate.
Claim 6
Dependent Claim
49 words
The method as claimed in claim 1, further comprising a step of roughening all the peripheral surfaces of said mechanical parts and partition plates to ensure a rigid bonding between the sprayed molten layer and said treated surfaces, which said step is carried out prior to said spraying step.
Claim 7
Dependent Claim
19 words
The method as claimed in claim 5, wherein said roughening step is carried out prior to said mounting step.
Claim 8
Dependent Claim
35 words
The method as claimed in claim 1, wherein said bevel surface is inclined with respect to the adjacent peripheral surface of the mechanical part at an angle within the range of from 110* to 150*.
Claim 9
Dependent Claim
56 words
The method as claimed in claim 1, wherein the amount of the peripheral portion of the partition plate extending radially outwardly from the peripheral surfaces of the mechanical parts on both sides thereof is within the range of one third of the thickness of said metallic coating and five times the thickness of said metallic coating.
Claim 10
Dependent Claim
37 words
The method as claimed in claim 9, wherein said partition plates have a peripheral surface with a groove therein having a pair of opposite groove faces to which said impact is imparted to facilitate the brittle fracture.
Claim 11
Dependent Claim
14 words
The method as claimed in claim 9, wherein said groove is a V-shaped notch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |