US3593406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reconstruction of diesel cylinder heads
Assignee: Individual
•
Filing: 1969-09-25
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Granted: 1971-07-20
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Expires: 1989-09-25
Abstract
Abstract A method of reconstructing worn cylinder heads, where only the inner face of the cylinder head forming a portion of a cylinder for a piston exhibits wear, including the steps of severing the worn portion from the remainder of the cylinder head, providing a new casting to be substituted for the worn portion, preparing the abutting surfaces of the unworn portion of the cylinder head and the new casting, applying a suitable flux to the surfaces, inserting a brazing alloy gasket of a configuration of the cross section of the cylinder head at the line of severance, aligning the parts together, heating the parts and brazing alloy to approximately 1,325* F. for approximately 2 hours, and slowly cooling the bonded parts.
Inventors
- 👤 Robert H Jones Jr
- 👤 Richard B Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:27
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; B; B23; B23K; B23K1/00; B23K1/0008; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; B23P; B23P6/00; B23P6/02; F02B; F02B3/00; F02B3/06; F02F2001/244; F02F2001/247; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49231; Y10T29/49233; Y10T29/49718; Y10T29/49748
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
A method of reconstructing cylinder heads where only a portion of the head exhibits wear, comprising the steps of severing the worn cap of a cylinder head from the remainder of the head, providing a new casting identical to the original form of the severed cap to be substituted therefor, machining the abutting faces of the retained portion and the new casting, cleaning the surfaces to be bonded and applying a suitable flux thereto, aligning and sandwiching a die-cut brazing alloy between the surfaces to be bonded, the alloy conforming to the surface configuration of the castings, heating the assembled casting and brazing alloy to a temperature of approximately 1,325* F. for a time interval of approximately two hours, and slowly cooling the bonded casting to ambient temperature.
Claim 2
Independent Claim
128 words
A method of reconstructing cylinder heads where only a portion of the head exhibits wear, comprising the steps of severing the worn cap of a cylinder head from the remainder of the head, providing a new casting identical to the original form of the severed cap to be substituted therefor, machining the abutting faces of the retained portion and the new casting, cleaning the surfaces to be bonded and applying a suitable flux thereto, aligning and sandwiching a die-cut brazing alloy between the surfaces to be bonded, the alloy conforming to the surface configuration of the castings, heating the assembled casting and brazing alloy to a temperature of approximately 1,325* F. for a time interval of approximately two hours, and slowly cooling the bonded casting to ambient temperature.
Claim 3
Dependent Claim
23 words
A method of reconstructing cylinder heads as set forth in claim 1, in which the abutting surfaces are cleaned by glass bead blasting.
Claim 4
Dependent Claim
44 words
A method of reconstructing cylinder heads as set forth in claim 1, in which aligned holes are formed in the facing surfaces of the castings, and positioning dowels are inserted into the holes to align the castings with the brazing alloy therebetween for bonding.
Claim 5
Dependent Claim
28 words
A method of reconstructing cylinder heads as set forth in claim 1, in which the brazing alloy is a silver brazing alloy having approximately 50 percent silver therein.
Claim 6
Dependent Claim
36 words
A method of reconstructing cylinder heads as set forth in claim 1, in which an asbestos-lined cylindrical sleeve is positioned over the assembled casting and brazing alloy to provide for uniform heating of the entire casting.
Claim 7
Dependent Claim
47 words
A method of reconstructing cylinder heads as set forth in claim 5, in which the assembled castings are passed through a two-zone oven having an exothermic atmosphere, the first zone tempering the castings entering the oven and the second zone raising the castings to the bonding temperature.
Claim 8
Dependent Claim
32 words
A method of reconstructing cylinder heads as set forth in claim 1, in which the bondeD castings are slowly cooled at approximately 100* F. per hour until the casting reaches ambient temperature.
Claim 9
Dependent Claim
45 words
A method of reconstructing cylinder heads as set forth in claim 7, in which said bonded castings exiting from the furnace are covered with a large metal cylinder, and surrounding the casting and filling the cylinder with a suitable insulation material to promote uniform cooling.
Claim 10
Dependent Claim
30 words
A method of reconstructing cylinder heads as set forth in claim 1, including the step of boiling the cooled bonded castings for approximately one hour to remove excess water-soluble flux.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |