Patent US1843758A successfully refreshed from Google Patents.
US3920176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solder method
Assignee: Whirlpool Corp
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Filing: 1974-09-09
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Granted: 1975-11-18
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Expires: 1994-09-09
Abstract
Abstract A method of soldering a metal tubular element having an arcuate portion and an end portion to a metal female element receiving the end portion and defining a distal annular solder space. The elements are mechanically secured together and immersed in a solder bath with the solder space opening downwardly and with the arcuate portion of the tubular element lowermost. The elements may be preheated for improved solder coating thereof in the bath. The solder coated elements are withdrawn from the bath and immediately inverted to allow the melted solder thereon to run toward the end portion and into the solder space to prevent formation of icicles on the arcuate portion and provide an improved soldered connection to the female element.
Inventors
- 👤 John E Becker
- 👤 Adolph E Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:17
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0646; B23K3/0669; B23K1/00; B23K1/0008; B23K1/0012; F; F28; F28F; F28F9/00; F28F9/26; F28F9/262; F28F9/268; B23K2101/00; B23K2101/04; B23K2101/14
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
160 words
The method of soldering a metal tubular element having an outer portion and an inner end portion to a metal female element receiving said end portion and defining a distal annular solder space in said female element about said end portion, said method comprising the steps of: coaxially securing said end portion into said female element with said outer portion disposed outwardly thereof; immersing the secured end portion in a molten solder bath with said space opening downwardly to apply a coating of molten solder to said tubular element and into said solder space; withdrawing the molten solder coated tubular element from the bath and, prior to solidifying of said solder on said tubular element inverting the same to dispose said space to open upwardly and allow molten solder on said tubular element to run into and fill voids in said solder space and to form a fillet at the upper end of said solder space; and setting the solder.
Claim 2
Independent Claim
160 words
The method of soldering a metal tubular element having an outer portion and an inner end portion to a metal female element receiving said end portion and defining a distal annular solder space in said female element about said end portion, said method comprising the steps of: coaxially securing said end portion into said female element with said outer portion disposed outwardly thereof; immersing the secured end portion in a molten solder bath with said space opening downwardly to apply a coating of molten solder to said tubular element and into said solder space; withdrawing the molten solder coated tubular element from the bath and, prior to solidifying of said solder on said tubular element inverting the same to dispose said space to open upwardly and allow molten solder on said tubular element to run into and fill voids in said solder space and to form a fillet at the upper end of said solder space; and setting the solder.
Claim 3
Dependent Claim
28 words
The method of soldering a tubular element to a female element of claim 1 wherein the distal end of said end portion is wedged into said female element.
Claim 4
Dependent Claim
26 words
The method of soldering a tubular element to a female element of claim 1 wherein said elements are preheated prior to the immersion in said bath.
Claim 5
Dependent Claim
38 words
The method of soldering a tubular element to a female element of claim 1 wherein said tubular element end portion is pressed into said female element with a force sufficient to prevent separation thereof during the immersion step.
Claim 6
Dependent Claim
33 words
The method of soldering a tubular element to a female element of claim 1 wherein the step of inverting comprises a step of swinging the solder coated tubular element about a horizontal axis.
Claim 7
Dependent Claim
38 words
The method of soldering a tubular element to a female element of claim 1 wherein the step of inverting comprises a step of swinging the solder coated tubular element about a horizontal axis spaced from said end portion.
Claim 8
Dependent Claim
29 words
The method of soldering a tubular element to a female element of claim 1 wherein the molten solder is ultrasonically vibrated while said secured end portion is immersed therein.
Claim 9
Dependent Claim
29 words
The method of soldering a tubular element to a female element of claim 1 wherein said end portion is lowered vertically into said solder bath to effect said immersing.
Claim 10
Dependent Claim
40 words
The method of soldering a tubular element to a female element of claim 1 wherein said inverted elements are raised to laterally of the space above the solder bath to effect a cooling thereof and solidification of the molten solder.
Claim 11
Dependent Claim
24 words
The method of soldering a tubular element to a female element of claim 1 wherein the outer portion of the tubular element is arcuate.
Claim 12
Independent Claim
145 words
The method of soldering a U-shaped metal tubular element having an arcuate bight portion and spaced leg portions to a pair of metal female elements receiving said leg portions, each female element defining a distal annular solder space, said method comprising the steps of: coaxially securing said leg portions into said female elements With said bight portion therebetween; immersing the tubular element in a molten solder bath with said spaces opening downwardly to apply a coating of molten solder to said tubular element and into said solder space; withdrawing the molten solder coated tubular element from the bath and concurrently inverting the same to dispose said spaces to open upwardly and allow molten solder on said tubular element to run into and fill voids in said solder spaces and to form a fillet at the upper end of each said space; and setting the solder.
Claim 13
Independent Claim
145 words
The method of soldering a U-shaped metal tubular element having an arcuate bight portion and spaced leg portions to a pair of metal female elements receiving said leg portions, each female element defining a distal annular solder space, said method comprising the steps of: coaxially securing said leg portions into said female elements With said bight portion therebetween; immersing the tubular element in a molten solder bath with said spaces opening downwardly to apply a coating of molten solder to said tubular element and into said solder space; withdrawing the molten solder coated tubular element from the bath and concurrently inverting the same to dispose said spaces to open upwardly and allow molten solder on said tubular element to run into and fill voids in said solder spaces and to form a fillet at the upper end of each said space; and setting the solder.
Claim 14
Dependent Claim
32 words
The method of soldering a tubular element to a pair of female elements of claim 11 wherein the distal end of each of said leg portions is wedged into the female element.
Claim 15
Dependent Claim
60 words
The method of soldering a tubular element to a pair of female elements of claim 11 wherein said female elements are positioned with the longitudinal axes thereof spaced apart a preselected distance corresponding to the axial spacing of said tubular element legs to receive said legs arcuately coaxially therein with said annular solder spaces extending substantially upwardly about said legs.
Claim 16
Dependent Claim
58 words
The method of soldering a tubular element to a pair of female elements of claim 11 wherein said female element comprises a tubular element having a bore provided with a distal end portion defining said solder space and a radially constricted portion at the inner end of said distal end defining a wedging portion of the female element.
Claim 17
Dependent Claim
48 words
The method of soldering a tubular element to a pair of female elements of claim 11 wherein each said female element defines a tube stop and said leg portions of the tubular element are inserted into the female element to adjacent said tube stops for facilitated assembly thereof.
Claim 18
Dependent Claim
34 words
The method of soldering a tubular element to a pair of female elements of claim 11 wherein each said female element comprises a tubular element having an expanded distal end defining said solder space.
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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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |