Patent US3742578A successfully refreshed from Google Patents.
US3742578A
Expired / Lapsed
US
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Method of manufacturing a regenerator
Assignee: US Philips Corp
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Filing: 1971-04-16
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Granted: 1973-07-03
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Expires: 1991-04-16
Abstract
Abstract A regenerator made of wires cut from a band of metal and compressed into layers, and a method and apparatus for making such wires by urging a cutter against the surface of a moving metal band, and a method of making regenerators using such wires.
Inventors
- 👤 A Dirne
- 👤 A Raymakers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:03
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/057; B; B23; B23P; B23P17/00; B23P17/04; B23P17/06; F28; F28D; F28D19/00; F28D19/04; F28D19/041; F28D19/042; Y; Y10; Y10S; Y10S83/00; Y10S83/929; Y10S83/949; Y10S83/95; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49357; Y10T29/49801; Y10T83/00; Y10T83/02; Y10T83/0304
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
73 words
A method of manufacturing regenerator filling mass comprising the steps, moving a metal band axially, cutting from the surface of the band at least one continuous wire, by urging a cutter against said moving surface, stripping each cut wire from the band, disposing a plurality of said cut wires into a layer while maintaining a generally mutually parallel orientation of the wires, compressing the wires in said layer, and sintering said compressed layer.
Claim 2
Independent Claim
73 words
A method of manufacturing regenerator filling mass comprising the steps, moving a metal band axially, cutting from the surface of the band at least one continuous wire, by urging a cutter against said moving surface, stripping each cut wire from the band, disposing a plurality of said cut wires into a layer while maintaining a generally mutually parallel orientation of the wires, compressing the wires in said layer, and sintering said compressed layer.
Claim 3
Dependent Claim
40 words
A method according to claim 1 comprising the steps of intially compressing said layer of wires to approximately 50 percent of its initial volume, normalizing the compressed layer in a reducing atmosphere, and further compressing the layer, before sintering same.
Claim 4
Dependent Claim
18 words
A method according to claim 1 comprising forming said layer in a zig-zag manner prior to compressing same.
Claim 5
Dependent Claim
20 words
A method according to claim 1 comprising cutting the layer into segments and stacking said segments prior to compressing same.
Claim 6
Dependent Claim
36 words
A method according to claim 2 wherein the layers comprise steel wire, the normalizing is at approximately 650* C in an atmosphere such as hydrogen, and said sintering is at a temperature of approximately 1100* C.
Claim 7
Independent Claim
72 words
A method of manufacturing regenerator filling mass comprising the steps, moving a metal band axially, cutting from the surface of the band at least one continuous wire, by urging a cutter against said moving surface, stripping each cut wire from the band, disposing a plurality of said cut wires into a layer while maintaining a generally mutually parallel orientation of the wires, and disposing a plurality of said layers into overlying relationship.
Claim 8
Independent Claim
72 words
A method of manufacturing regenerator filling mass comprising the steps, moving a metal band axially, cutting from the surface of the band at least one continuous wire, by urging a cutter against said moving surface, stripping each cut wire from the band, disposing a plurality of said cut wires into a layer while maintaining a generally mutually parallel orientation of the wires, and disposing a plurality of said layers into overlying relationship.
Claim 9
Dependent Claim
41 words
A method according to claim 6 wherein the cutter has a plurality of teeth and the step of cutting comprises urging all said teeth simultaneously against said surface, and thus cutting a plurality of wires, and leaving corresponding grooves and ridges.
Claim 10
Dependent Claim
36 words
A method according to claim 7 comprising cutting of wires with a first cutter, and cutting a different plurality of wires from the ridges in the band with a second cutter spaced from the first cutter.
References Cited (Backward Citations)
US2004085A
Cited
US3015153A
Cited
US3091026A
Cited
US3204326A
Cited
US3286563A
Cited
US3268990A
Cited
US3437457A
Cited
US3540114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |